Monthly Archives: February 2016



RMC Gems Thai has been able to maintain its status as a highly esteemed gemstone supplier thanks to its ‘direct from mine to market’ approach. It is very important for jewellery manufacturers to have a constant supply of gems with perfectly consistent quality, as well as somewhere they can source all their gemstones in one place. RMC Gems Thai, which has sales offices in Bangkok, Hong Kong and Japan, is that one-stop shop. Its product line comprises gemstones of all types, suitable for silver, gold or platinum jewellery makers. It offers a full range of gemstone varieties, including topaz, Paraíba tourmaline, tanzanite, opal, spinel, kunzanite, natural zircon, ruby, emerald, sapphire, amethyst, garnet, citrine, and many more.

For crystal collectors and therapists seeking the highest-vibration stones for deep meditation and healing work – this is the place to come. This year, RMC Gems Thai has added morganite to its range, beautifully displaying it in a wide variety of shapes, cuts and colours in its brand-new collection, ‘Divine Love’. Morganite, which the firm primarily sources from Madagascar, is currently considered one of the highest vibration stones. It comes in rose pink and peach shades; some are decidedly pink, while others may have a hint of orange. The colour of lighter pink morganite stones may be intensified by heat, and can sometimes turn the stone orange. Peach morganite is a particularly lovely stone, with slightly different metaphysical properties to the more common beryl pinks. The best and prime source of it is the Marropino mine in Mozambique. The second source is Madagascar and there are also some deposits of this stunning beryl in Brazil and Nigeria. RMC Gems Thai believes in the principle that ‘any task undertaken should be done well, otherwise it is not worth embarking on any job at all’. By following this ideology, the company does great business and has built excellent relationships with its customers over the years.

The sourcing of raw material is done in house, which helps keep the cost of the product reasonable. The firm also has its own manufacturing facilities in Thailand, India and China, combining the best skills from all over the world, thereby giving it an edge over its competitors.


Headquarters RMC Gems Thai Co., Ltd., 8 Soi Pramote 3, Mahesak Road, Suriyawong, Bangrak, 10500 Bangkok, Thailand Established 1991 Specialities Loose gemstones Head Padam Jain, Managing Director Contact,, Tel: +66 2 635 9101, Fax: +66 2 635 8707


In the last two decades there has been a proliferation of certification, not only for diamonds but for gemstones as well. There are five 5 major laboratories which grade and provide reports on gemstones.

  • Gemological Institute of America (GIA)
  • American Gemological Society (AGS) is not as widely recognized nor as old as the GIA but garners a high reputation.
  • American Gem Trade Laboratory which is part of the American Gem Trade Association (AGTA) the largest trade organization of jewelers and dealers of colored stones.
  • American Gemological Laboratories (AGL) which was recently taken over by “Collector’s Universe” a NASDAQ listed company which specializes in certification of many collectables such as coins and stamps.
  • European Gemological Laboratory (EGL).

Although certification can provide certainty and clarity, each laboratory has its own methodology to evaluate gemstones; grading experience is different and depending on the cert required each lab approaches these issues differently. Consequently a stone can be called “pink” by one lab while another lab calls it “Padparadscha”. One lab can conclude a stone is untreated, while another lab concludes that it is heat treated. Countries of origin has sometimes been difficult to find agreement on due to the constant discovery of new locations. Gem labs need time to study them. Moreover determining a “country of origin” does not have the exact scientific methods at its disposal as other aspects of a gem (such as cut, clarity etc.)

Gem dealers are fully aware of the differences between gem laboratories and will make use of the discrepancies to obtain the best possible cert. One such example is to make use of the differences in “Country of Origin”: a sapphire from Kashmir (celebrated for its cornflower blue color) commands four times the price of the same stone from Ceylon and twice the price if the stone were from Burma.