The international gem market recognises a hierarchy of certification laboratories based on reputation, equipment sophistication, and global acceptance. At the highest tier, Swiss laboratories such as SSEF (Swiss Gemmological Institute), Gübelin Gemological Laboratories, and GRS (Gem Research Swisslab) command the strongest international reputation for coloured gemstone certification. The Gemmological Institute of America (GIA) and the American Gemmological Laboratories (AGL) are similarly respected, particularly in North American regions.
When Sri Lankan dealers or exporters require certification from these internationally renowned laboratories, stones must be sent to facilities in Bangkok, Switzerland, or the United States. This process involves substantial costs, international shipping, lab fees, insurance, and customs documentation.
The gemmologists operating Sri Lankan laboratories hold internationally recognised credentials, GIA Graduate Gemmologist (GG) qualifications earned in the United States, FGA certifications from the Gemmological Association of Great Britain, or equivalent professional training. Established Sri Lankan laboratories employ similar testing equipment and follow comparable protocols to their international counterparts.
For everyday transactions in this value range, certificates from reputable Sri Lankan laboratories NGJA, GIC, GGTL, GRC, PGTL, and others provide reliable identification, treatment disclosure, and origin documentation.
Sri Lankan laboratories offer expertise in Ceylon gemstones. Having examined countless local Sapphires, Spinel, Chrysoberyl, and other Sri Lankan varieties, local gemmologists often offer nuanced knowledge of material characteristics specific to the island's deposits. Their databases contain extensive reference material from known Sri Lankan sources.
In some instances, international gemmological certifications are needed, when trading high value stones at an international level.
Major auction houses like Christie's and Sotheby's typically require certificates from internationally recognised laboratories for significant coloured gemstones. Stones with SSEF, Gübelin, GRS, or GIA documentation are more readily accepted and may command higher hammer prices.
High-value gems benefit from internationally recognised documentation for insurance purposes and future resale. Certificates from laboratories with a global reputation may lead to higher resale values, while certificates from lesser-known laboratories might result in price discounts when selling internationally.
If a stone potentially qualifies for premium colour designations such as "Royal Blue" for sapphires or "Pigeon's Blood" for rubies, certification from a laboratory whose colour grades are internationally recognised and trusted becomes important.
Professional buyers in certain markets, particularly Europe, North America, and Japan, may strongly prefer or require specific laboratory certifications. Understanding your target market's expectations helps determine the most appropriate certification strategy.
Experienced Sri Lankan dealers recommend a value-based approach for lower-to-moderate value stones and obtain certification from a reputable local laboratory for reliable documentation at a reasonable cost. For exceptional stones, arrange international certification where the investment is justified. Smart international buyers focus less on demanding specific laboratory certificates and more on establishing relationships with transparent, trustworthy dealers who will answer questions honestly and work with buyers on certification needs.
