Natural, Cultured, Composite and Imitation Pearls – Terminology and Classification (nomenclature)
1. Scope
The terminology and classification (nomenclature) for pearls (5.118), cultured pearls (5.48), composites (5.42) and imitation pearls (5.84) are established with reference to commercial usage and are in conformity with the practices of the international natural, cultured and imitation pearl trade. The terminology and classifications (nomenclature) of natural, cultured and imitation pearls as set out herein shall be used by all traders participating as members of CIBJO member organizations within all member nations.
NOTE – CIBJO recognises that its standards are subject to government regulations in the respective jurisdiction of CIBJO members. ( price of natural pearls )
2. Normative references
- The Diamond Book, CIBJO, International Confederation of Jewellery, Silverware, Diamonds, Pearls and Stones), the World Jewellery Confederation, S.S. Del Sempione KM.28 20017 RHO Milano, Italy. cibjo@cibjo.org. ( price of natural pearls )
- The Gemstone Book, CIBJO (International Confederation of Jewellery, Silverware, Diamonds, Pearls and Stones), the World Jewellery Confederation, S.S. Del Sempione KM.28 20017 RHO Milano, Italy. cibjo@cibjo.org. ( price of natural pearls )
- The Precious Metal Book, CIBJO (International Confederation of Jewellery, Silverware, Diamonds, Pearls and Stones), the World Jewellery Confederation, S.S. Del Sempione KM.28 20017 RHO Milano, Italy. cibjo@cibjo.org. ( price of natural pearls )
- The Gemmological Laboratory Book, A Guide for the Management and Technical Operations of Gemmological Laboratories, CIBJO (International Confederation of Jewellery, Silverware, Diamonds, Pearls and Stones), the World Jewellery Confederation, S.S. Del Sempione KM.28 20017 RHO Milano, Italy. cibjo@cibjo.org
- Convention on International Trade in Endangered Species of Wild Fauna and Flora, Appendices I, II and III valid from 22 May 2009. International Environment House • Chemin des Anémones • CH-1219 Châtelaine, Geneva, Switzerland, info@cites.org.
- ( price of natural pearls )
3. Pearl Categories
The jewellery industry and trade shall recognize four categories of pearl:
(a) The rare natural pearls (5.118) that are produced naturally by various saltwater (bi-valve and univalve) and freshwater molluscs.
Articles source: THE PEARL BOOK, Natural, Cultured, Composite & Imitation Pearls — Terminology & Classification (Including information on modifications), 2013-08-12, CIBJO/Pearl Commission. ( price of natural pearls )
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