Gemlab sells untreated-treated rubies, sapphires and other gems, specifically selected for education purposes to satisfy the requirements for the FGA diploma examinations in gemology and for gemological research. All these stones have inclusion characteristics typical for their type of treatment of great gemological interest suitbale for microphotography. At this time we have in stock Beryllium-treated rubies & sapphires, Lead-treated rubies, Beryllium+Lead-treated rubies. Also, we have other rubies and sapphires treated with many different processes. All the stones have been treated in our gem treatment lab in Bangkok with known parameters and they are carefully selected and properly document to serve as control and reference samples. They are sold as single stones, in lots of in sets. Usual size per stone ranges from 0.25 ct to 3 cts.

.	Lead-treated Rubies: These carefully selected Lead-treated rubies, also known as "pai-mai" are produced in our laboratory in Bangkok after high-temperature heating with lead, bismuth, tantalum and other additives.Most of these rubies are from Antilamena (Madagascar) and show inclusion characteristics of great gemological interest. Stones are available to 50 carats and they are priced very reasonably. Check our inventory on PB-filled gems available for immediate sale. Learn more about the glass-filled rubies. Read our book Flux-Enhanced Rubies & Sapphires.
	Beryllium-treated rubies & sapphires. These carefully selected beryllium-treated rubies and sapphires are produced in our laboratory in Bangkok after high-temperature heating with beryllium and other additives. Most popular colors are yellow ("yellow fever"), orange ("papaya"), and pink-orange ("mad-pad"). Other types of beryllium-treated colors are available: faceted golden-brown, preformed with ery intense orange "rim", preformed with yellow/orange "rim", preformed with "blue-spot" on greenish body-color, rough pink-orange with "blue-spot", faceted light pink and faceted ruby. All above stones are from Ilakaka-Sahkara District (Madagascar), Songea (Tanzania) and elsewhere. Stones are available to 3 carats and they are moderately priced. Check our inventory of the Be-treated gems available for immediate sale. Learn how to detect the beryllium-treated rubies-sapphires. Read our book Beryllium-Treated Rubies & Sapphires.
.	Beryllium and Lead-treated rubies. These rubies have been treated in our lab using the latest technology. Most of the stones emanated from Antilamena (Madagascar) and elsewhere. They are fully transparent, faceted showing a distinct orange-red tinge. They are of great gemological value because of their inclusion characteristics; they also may be used in jewelry. Stones are available to 10 carats and they priced from US$10 per carat to US$200 per carat. Please contact us for current list.
Treated rubies & sapphires. Great variety of different types of treated rubies and sapphires of outstanding gemological value will be available soon.

NOTES:
-Weight and measurements are approximate
-Color is described when observed in face-up position in daylight (5500oK)
-Clarity is described as observed under 10X magnification
-Prices are in US Dollars, net + shipping, FOB Bangkok
-Payment can be made using your credit card, check or money transfer through Paypal.

SPECIAL ORDERS: Before accepting your special order please send us e-mail stating your exact requirements: number of stones, average weight of each stone, color, clarity and special features. We will do our best to accommodate your request and inform you the related details and exact cost before shipping. For special requests click here.