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Recent Posts
- List of facts about tourmaline, an opinion
- No Paraiba in top ten list of most valuable/rarest or beautiful gemstones??
- #261 and a bright red cuprian smile
- Included bright sparkling red round. #261
- Getting threw the winter, 1/3 carat of fire
- The amount of lead in tourmaline.
- Color my world of tourmaline.
- Copper’s limited roll in coloring Paraiba/cuprian tourmaline.
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Recent Comments
- Romeo48065 on Laurellite a reverse color change tourmaline is unique.
- toadandspur on Outstanding Achroite with a Mystery
- Bruce Fry on Welcome to a World of Color in Tourmaline
- David Walsh on Paraiba/paraiba type tourmaline and treatments.
- rexguo on Laurellite a reverse color change tourmaline is unique.
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Author Archives: bft_admin
Copper, Red, Tourmaline, A Christmas tale
Dec. 29th 2009 On the night before Christmas I was again examining my tourmaline collection with my new spectrometer in search of SOMETHING. I have gotten better with it and alone with double checking some earlier cuprian tourmaline I began … Continue reading →
I Am Not A Heater and the first “Laurellites”
April 10th 2009 I keep reading literature on heating cuprian Elbaite with a growing sadness. I am reading about the demise, that I knew was taking place, of a new variety of Elbaite that is little recognize, appreciated or conserved. … Continue reading →
Color Change/Shift in Red Tourmaline
Feb. 27th 2010 The first well known feature of some red tourmaline is that it de-saturates under incandescent light and turns brownish. This is not desirable and has cause the use of the variety name Rubellite to be only acceptable … Continue reading →
Posted in Cutting Tourmaline, Personal Stories, Rubellite
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Tagged color change, color-shift, personal story, red, rubellite
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Cutting & Faceting Tourmaline
Cutting & Faceting Tourmaline by Bruce A. Fry Considering Color & Weight Retention When cutting rough tourmaline, as with any colored gemstone variety, the lapidary must consider both color and weight retention. The unique complexity of cutting tourmaline comes into … Continue reading →
Posted in Cutting Tourmaline, Etc., Personal Stories
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Tagged cutting tourmaline, personal story
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