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Thailand's "Queen Sirikit Navaratna" necklace.. Navaratna (Sanskrit: नवरत्न) is a Sanskrit compound word meaning "nine gems" or "ratnas".Jewellery created in this style has important cultural significance in many southern, and south-eastern Asian cultures as a symbol of wealth, and status, and is claimed to yield talismanic benefits towards health and well-being.
The order is based on the model of European orders of chivalry and merit. The nine gems are the Thai form of the original Hindu royal amulet known as the navaratna and in its original form consisted of a ring of gold bearing the nine gems awarded to a Thai general after he won an important military victory and is also part of the royal insignia given the Thai king at his coronation.
Gem and Jewelry Museum is a museum in Bangkok, Thailand operated by the Gem and Jewelry Institute of Thailand Public Organization, Faculty of Science, Chulalongkorn University. [ 1 ] The displays include gems and mineral specimens, mining, the origins of gems and how they are cut and graded, precious metals and manufacturing procedures of gold ...
Rare or unusual gemstones, generally understood to include those gemstones which occur so infrequently in gem quality that they are scarcely known except to connoisseurs, include andalusite, axinite, cassiterite, clinohumite, painite and red beryl. [27] Gemstone pricing and value are governed by factors and characteristics in the quality of the ...
Red beryl is an extremely rare gemstone. For every 150,000 diamonds mined, only one red beryl is found. A two-carat red beryl is considered to be as rare a find as a 40-carat diamond. The rare ...
Black star sapphire is found in Thailand, Cambodia, Tanzania, Australia, Sri Lanka, Sierra Leone, Laos and many other countries, although supply is growing continuously exhausted, and mine yields have decreased. [2] The mines on the Thai/Cambodia border were reported to be almost exhausted of clear high-value gems by the late 1990s.
It is a member of the Thai Gem and Jewelry Traders Association (TGJTA), and the International Colored Gemstone Association (ICA). The AIGS Gem Laboratory is very well known for its expertise in colored gemstones, [ citation needed ] especially ruby, sapphire , emerald , jade and rare stones, but it also provides identification and grading ...
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