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Pearl producing mollusks

1.1 Pearl producing molluscs

Although logically all shell-bearing molluscs can produce pearls (Strack, 2006; Webster, 1994), they have only been recorded in several families and genera. In marine waters, pearls have been found in 17 genera of 11 families of bivalves, 11 genera of 8 families of gastropods and one genus of cephalopod (Nautilus) (Strack, 2006). Freshwater pearls have been found in 43 genera of two families only (Strack, 2006). Pearl producing molluscs can be divided in two groups; those producing nacreous and non-nacreous pearls.

Indonesia south sea pearls (Lombok Pearls)
Indonesia south sea pearls (Lombok Pearls)

1.1.1 Molluscs producing non-nacreous pearls
wholesale pearlsThere are at least five gastropod families (Strombidae, Cassidae, Muricidae, Fasciolariidae and Volutidae) and seven bivalve families (Arcidae, Pectinidae, Spondylidae, Placunidae, Ostreaide, Tridacnidae and Veneridae) that produce non-nacreous pearls (Strack, 2006). They are taxa without nacre-lined shells. Pearls from these species are generally natural pearls which lack colour and have low value. However, some of the pearls produced by these taxa are rare, colourful and coveted; for example, those produced by several species of conch (Family Strombidae) and volutes (Family Volutidae) (Matlins, 2002; Strack, 2006).

1.1.2 Molluscs producing nacreous pearls
In freshwater, nacreous pearls are produced from bivalves only. They are distributed in two families: Margaritiferidae and Unionidae (Strack, 2006). Both are from the superfamily Unionoidea and have nacre-lined shells. Three species from the family Unionidae are commonly cultivated for pearl production: Cristaria plicata, Hyriopsis cummingii and H. schlegeli (Strack, 2006; Wang & Wu, 1994).

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In marine waters, there are at least three gastropod families (Haliotidae, Trochidae and Turbinidae) and four bivalve families (Mytilidae, Malleidae, Pinnidae and Pteriidae) that produce nacreous pearls (Strack, 2006). They have nacre-lined shells (Watabe, 1988). However, only two families are cultured for pearl production: the gastropod family Haliotidae and the bivalve family Pteriidae. Two genera are cultivated for pearl production in the family Pteriidae; Pinctada and Pteria (Strack, 2006).

By far the most important of these is the genus Pinctada (Southgate et al., 2008b). Of the taxa within the genus Pinctada, Pinctada maxima is the most important in terms of commercial cultured pearl production and as outlined above, it accounts for around 46% by value of global marine cultured pearl production (Southgate et al., 2008a). Pinctada maxima is the focus of this study.

indonesia south sea pearls cultivation
Indonesia south sea pearls cultivation

Article source: Mamangkey, Noldy (2009) Improving the quality of pearls from Pinctada maxima. PhD thesis, James Cook University.
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This is my name, my phone number and my address, as a sender (written by FedEx)
This is my name, my phone number and my address, as a sender (written by FedEx)

We send your purchasing parcel via FedEx, we inform you the tracking number as soon as possible
We send your purchasing parcel via FedEx, we inform you the tracking number as soon as possible

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Improving the quality of pearls from Pinctada maxima

Improving the quality of pearls from Pinctada maxima

by: Mamangkey, Noldy (2009) Improving the quality of pearls from Pinctada maxima. PhD thesis, James Cook University.

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Indonesia south sea pearls wholesale – Miss Joaquim Pearls – whatsapp +6287865026222

Chapter 1 – General Introduction
The pearling industry is among the most potentially profitable aquaculture businesses. For example, a hundred grams of gem pearls could be valued at more than US$ 2,600 (Anon, 2007b). This value is more than hundred times higher than that of other aquaculture commodities on a weight basis. Global cultured pearl production in 2005 was valued at around two-third of a billion US dollars from a total of more than 1,550 tonnes of pearls (Anon, 2007b) (Table 1.1).

wholesale pearlsIt has increased by approximately 40% compared to 2003 (Kremkow, 2005). Cultured pearl production is contributed to primarily by four leading pearl producing molluscs:
(1) freshwater mussels;
(2) the Akoya pearl oyster, Pinctada fucata;
(3) the blacklip pearl oyster, P. margaritifera, that produces ‘black’ South Sea or Tahitian pearls; and
(4) the silver-or gold-lip pearl oyster, P. maxima, that produces white or gold South Sea pearls (Southgate et al., 2008b).

Cultured pearls from both P. margaritifera and P. maxima are generally referred to as “South Sea Pearls” but are differentiated on the basis of colour (Strack, 2006). For clarity in the following text, cultured pearls from P. margaritifera and P. maxima will be referred to as Tahitian and South Sea pearls, respectively (Anon, 2007a).

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Freshwater cultured pearls make up 96.7% of total cultured pearl production but only 23% of total value (Anon, 2007b)(Table 1.1).

  • Tahitian and South Sea cultured pearls contribute approximately 0.5 and 0.6% of the total volume but make up 20 and 37% of the total value, respectively.
  • Japanese Akoya cultured pearls contribute 2.2% of the total volume, which make up 20% of total value.
  • Therefore based on the proportion of value of pearl production South Sea cultured pearls are the predominant sector of the industry. Besides producing pearls, pearl oysters or mussels also supply valuable shells and meat.
  • Shells are usually supplied to various industries and needs in products including jewellery, accessories, cosmetics, health products or fertilizer (Ward, 1995); while meat – which is taken from the adductor muscle- is used for food.

Table 1.1 Production and the value of world cultured pearl production at the pearl farm level in 2005 according to Golay’s estimates.

indonesia south sea pearls cultivation
Indonesia south sea pearls cultivation

Pearl type Production in (tonnes) – Value (Million US$) – Percent of the total pearl market value

  1. South Sea pearls = 9 – 10 tonnes =  $236 Million US$ = 37%
  2. Tahitian pearls = 8.1 tonnes = $126 Million US$ = 20%
  3. Akoya pearls = 34 tonnes = $128 Million US$ = 20%
  4. Freshwater pearls = 1500 tonnes = $150 Million US$ = 23%
    Source: Anon (2007b)

Pinctada maxima (Jameson) is the largest species among pearl oysters (Gervis & Sims, 1992; Hynd, 1955; Strack, 2006). It produces the finest, largest and most valuable cultured pearls (Matlins, 2002; Ward, 1995) and is the target species for this study. As an introduction to the study, the remainder of this Chapter provides a general overview of the biology and taxonomy of Pinctada maxima (Jameson), the history of natural and cultured pearls, pearls cultivation methods, pearl formation, pearl grading and pearl quality, and a the major objectives of this study.
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We send your purchasing parcel via FedEx, we inform you the tracking number as soon as possible

This is my name, my phone number and my address, as a sender (written by FedEx)
This is my name, my phone number and my address, as a sender (written by FedEx)

We send your purchasing parcel via FedEx, we inform you the tracking number as soon as possible
We send your purchasing parcel via FedEx, we inform you the tracking number as soon as possible

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Buying Pearls on the Internet

south sea pearl necklace price 001

Buying Pearls on the Internet

wholesale pearlsWhen viewing pearls on the Internet, it’s always a challenge to know whether pictures shown accurately reflect the color listed in the description. However, don’t let this be a barrier to buying your pearls on the Web! Ask for more information, if necessary.

Reputable companies which specialize in pearls understand how important color match is, and will usually go to great pains to ensure their pictures are as accurate as possible and in any case, should stand behind their product. Word spreads quickly on the Internet it’s their reputation on the line!

Indonesia south sea pearls wholesale - Miss Joaquim Pearls - whatsapp +6287865026222
Indonesia south sea pearls wholesale – Miss Joaquim Pearls – whatsapp +6287865026222

When in doubt about an item, call the company and talk to someone. Based on what you’ve learned here, ask them questions. Listen and use your judgment and intuition. Make sure that you feel comfortable they’re knowledgeable about pearls, and that the company has a solid written guarantee and a return policy. If they have a showroom in your area which is open to the public (as MISS JOAQUIM PEARLS does, for example), even
better.

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Care and Handling

Follow these guidelines to make sure your pearls last a lifetime!

Indonesia south sea pearls wholesale - Miss Joaquim Pearls - whatsapp +6287865026222
Indonesia south sea pearls wholesale – Miss Joaquim Pearls – whatsapp +6287865026222
  1. To prevent scratches, pearls must be stored in a separate compartment from other
    jewelry such as gold, sapphires, diamonds, and harder gems.
  2. Pearls love moisture. Clean them regularly, preferably after every use, with a clean, soft, damp cloth. Store them with a glass of water if kept for long periods.
  3. Never, ever, steam-clean pearls or place them in an ultrasonic cleaner.
  4. Never use ammonia-based cleaning solutions, even if they say they’re safe for other jewelry. Only use solutions which explicitly say they are safe for pearls, or use a light solution of soap and slightly warm water.
  5. Apply hairspray, scent, deodorant or any aerosols and cosmetics BEFORE putting on your pearls, making sure these chemicals are absorbed first.
  6. Good quality pearls should be re-strung using silk cord knotted between pearls. Re-stringing should be done annually to every four years, depending on frequency of wear.
  7. Wear your pearls as often as you can because body oils enhance them, but never wear them in a swimming pool, while bathing, doing housework or exercising.

south sea pearls wholesaleFor Questions and answer you can contact & chat with us on:

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We send your purchasing parcel via FedEx, we inform you the tracking number as soon as possible

We send your purchasing parcel via FedEx, we inform you the tracking number as soon as possible

abdurrachim pearl fedex
We send your purchasing parcel via FedEx, we inform you the tracking number as soon as possible

This is my name, my phone number and my address, as a sender (written by FedEx)
This is my name, my phone number and my address, as a sender (written by FedEx)

We send your purchasing parcel via FedEx, we inform you the tracking number as soon as possible
We send your purchasing parcel via FedEx, we inform you the tracking number as soon as possible

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Glass Pearls wholesale : How to Spot Pearl Imitations

Glass pearls wholesale : How to Spot Pearl Imitations

fresh water pearls
Fresh water pearls

(Foto source : glass pearls wholesale )

Because pearl production is an expensive, labor-intensive endeavor with no guarantee of success for the farmer, top-quality pearls always command top prices. After all, they are hard to obtain!
Just as with anything of value, whether it’s diamonds or designer handbags, cheaper imitations are always available for those who want them. When it comes to pearls, you need to know how to spot imitations and avoid the unscrupulous (or simply uninformed) proffering their goods among us. (source : glass pearls wholesale )
Pearl Test #1: “The Rub”
glass pearls wholesaleAs explained before, real pearls (both natural and cultured) are created by layers of nacre, one on top of the other. Although pearls have a luxurious smoothness to the touch, in reality these layers overlap unevenly and roughly. If you have two pearls, rub one against the other very lightly, without damaging the pearls. If the pearls are real, you should feel a slight gritty or sandy sensation. What you’re feeling are the layers of nacre rubbing against one another. Imitations made of glass, plastic, etc. will feel smooth and glassy when rubbed together – humans have still not figured out how to reproduce the oyster’s expertise! (source : glass pearls wholesale )

If you have only a single pearl, you can also feel this sandy sensation by rubbing the pearl lightly against the front of your tooth (just don’t put the pearl between your teeth or bite it – you could damage it and be forced to take it home with you!) Be aware, however, that performing this test in public might label you a newbie… it’s better and safer to ask for a second pearl if in doubt. (source : glass pearls wholesale )

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Pearl Test #2: “Feeling Cool”
Real pearls will also be cool to the touch. At room temperature, the surface of a pearl will be cool against the back of your hand or your face. Plastic will feel warm to the touch at room temperature. (source : glass pearls wholesale )

Pearl Test #3: “The Look”

White_South_Sea_Pearls_Wholesale_Miss_Joaquim_Lombok Pearls_Indonesia
Indonesia south sea pearls wholesale – Miss Joaquim Pearls – whatsapp +6287865026222

True pearls nearly always show natural characteristics: a small dimple here, a slight variation in color or luster there. Be tolerant of minor blemishes; in many cases they add unique character. This is a big part of the appeal of pearls – they are a product of nature!

Imitations usually appear “perfect” in every way: bright reflections, spotless surface, identical color match. However, there is usually something about “the look” that seems unnatural, a lack of depth in those qualities. With a little practice, you can spot these easily. (source : glass pearls wholesale )

Pearl Test #4: “Heavy, Man!”
True pearls also have a distinctive weight or “heft” to them. Recognizing this trait will come with practice. They simply have a “substantial” feel that you generally don’t find with imitations. In fact, most pearl dealers instinctively use “weight” and “look” first when evaluating pearls. (source : glass pearls wholesale )

How to Spot Fake Colors
Color treatments for pearls are fairly common. However, pearls which are natural in color are almost always more valuable than treated ones. One reason is that some treatments may actually fade or make the pearl less durable. Always ask whether the color is natural, especially before making a major purchase! (source : glass pearls wholesale )

Each pearl species has a specific color range, as you discovered in the last installment of this series. Some colors not natural for particular species. For example, Akoya pearls come naturally in white, but not black. Black pearls smaller than 8mm are probably either color-treated Akoya or Freshwater pearls, since Tahitian pearls don’t usually come much smaller than 8mm. Also, if the colors you see appear to look “metallic” or otherwise seem “unnatural”, suspect color treatment. (source : glass pearls wholesale )

Tahitian Black Pearls 1
Tahitian Black Pearls

Magnification.
Obvious color treatments may show ink residue or other differences in color. Bear in mind that there are cases where color treatment is very hard to detect, especially in golden south sea pearls. In such cases, the only way to know more is to send the pearls to a testing laboratory to confirm the color. Sometimes, even labs cannot know for certain. The thing to keep in mind is that a reputable pearl dealer should always stand behind their product and disclose any color treatments up-front. If in doubt, just ask. (source : glass pearls wholesale )

Other Guidelines for Pearl Evaluation Follow these basic guidelines when evaluating pearls:

  1. View pearls against a white background to minimize color distortions. Pearls absorb and reflect the colors around them, including colors from your own clothing!
  2. If possible, view pearls under natural (white) light.
  3. Hold pearl strands at either end and roll them slowly to spot surface characteristics and evidence of uneven nacre (which appears as “blinking” or changes in color.)

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Wholesale pearl jewelry : 7 Secrets that Your Local Jewelers Might Not Want You to Know!

Wholesale pearl jewelry : 7 Secrets that Your Local Jewelers Might Not Want You to Know!

wholesale pearl jewelry

wholesale pearl jewelry
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(Photo & data source: wholesale pearl jewelry)

SECRET #1: Most Jewelers Don’t Know Pearls – Wholesale pearl jewelry

Yes, it may sound incredible, but most jewelers are not well-versed in pearls or the pearl market. Although they may be very well-educated in diamonds or jewelry, many have never taken a single class on pearls. In fact, at last check the Gemological Institute of America (GIA) currently offers only one in-class, one-day seminar on pearl grading. It’s not a required course for a GIA degree, so most jewelers never even take it (however, you can sure that all of the professionals at MISS JOAQUIM PEARLS do).

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SECRET #2:Many Jewelers Don’t Own the Pearls In Their Showcase – wholesale pearl jewelry

One secret of the jewelry industry is extensive use of “memo”, or consignment. Since most jewelry stores sell fewer pearls than say, diamonds or gold, it is common practice for the jeweler to “borrow” the pearls from a pearl dealer to show a client. Nothing wrong with that in itself, but this practice usually results in a higher price passed on to the end consumer than if the pearls are purchased and sold directly. (data source: wholesale pearl jewelry)

Tahitian Black Pearls 1
Tahitian Black Pearls

SECRET #3: Many Jewelers Must Sell Pearls at Two or Three Times What They Paid – Wholesale pearl jewelry

Most retail jewelry stores have high overhead – rent, marketing, merchandising, salespersons commissions, in addition to the cost buying of the merchandise itself. Markups need to be high enough to cover all this. Again, nothing necessarily wrong here, but as a consumer you should know where your money is going. High markups are especially common on pearls. Most jewelry stores simply won’t buy pearls in volume, because it is a niche product compared to diamonds. As a result, they must pay a higher price (either on memo or outright) and pass this on to the consumer. (data source: wholesale pearl jewelry)

SECRET #4: Jewelry Salespeople May Claim a Standard Grading System for Pearls – wholesale pearl jewelry

Unlike diamonds, there is no standard grading system for pearls. In practice, most pearl dealers typically define their own grading systems, and visually rate what they see within their own system. However, many retail sales presentations may show a strand of pearls as “AAA” without disclosing how that grade was assigned. Without a standard chart or other pearls to compare against, such a grade is often meaningless. (data source: wholesale pearl jewelry)

About Grading Systems – wholesale pearl jewelry

wholesale pearl jewelry
pearl table

(Photo & data source: wholesale pearl jewelry)

 

That being said, you’re likely to encounter various grading systems: Mikimoto “pyramids”, GIA, Tahitian A-D, etc. etc. Just remember that the purpose of any system is to provide a common language for people to discuss pearl quality. One very common system (we use it ourselves at Miss Joaquim Pearls) is the AAA-A Grading System. AAA is the highest grade, with a very high luster and at least 95% of the surface free from blemishes. AA will have high luster, with at least 75% of the surface free of blemishes. Grade A is still a nice pearl, but has lower luster than the higher grades and/or more than 25% of the surface showing blemishes. You may also see intermediate grades, like AA+ or A+, for pearls that fall between two of these grades. Just remember, use your new knowledge to evaluate pearls on their actual merits, and use grades to just get a “ballpark” idea when you discuss pearls with the sellers. (data source: wholesale pearl jewelry)

SECRET #5: Client Education on Pearls is Often Lacking – wholesale pearl jewelry

Many sales presentations will extoll the “benefits” – that pearls are “beautiful” or “cherished for generations”. What they often can’t tell you are all the facts.
● “What makes a given pearl better than another?”
● “Why is this pearl so much more expensive than that one?”
● “How do I care for pearls?”
A great salesperson should educate you on all these questions, and help you make an informed decision. (data source: wholesale pearl jewelry)

Indonesia south sea pearls wholesale - Miss Joaquim Pearls - whatsapp +6287865026222
Indonesia south sea pearls wholesale – Miss Joaquim Pearls – whatsapp +6287865026222

SECRET #6: Price Does Not Always Indicate Quality – wholesale pearl jewelry

Buying pearls based solely on price is the number one fatal mistake most consumers make. One store may offer an 8mm pearl strand for X dollars, while another store may offer an 8mm pearl strand for half the price. Great deal? Um… maybe not!
First, go back to the basics. Use the knowledge you’ve gained here to decide whether or not the strands are like quality. Only compare “apples to apples”, and don’t buy solely on price. Cheap pearls that crack or change color aren’t worth your cash or your time. (data source: wholesale pearl jewelry)

SECRET #7: Many Repair Jewelers Do Not Know Correct Pearl Handling – wholesale pearl jewelry

Pearls are easily damaged by standard jewelry cleaning solutions, torches, and ultrasonic machines. If the bench jeweler is not familiar with the correct way to remove pearls, stringing, or gluing they can damage your precious investment. Ask how often they deal with pearls, and only entrust your future heirloom with someone who knows what they’re doing. (data source: wholesale pearl jewelry)
wholesale pearl jewelry

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