Rare blue Taaffeite
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- Namba Rie
- Gem Science Academy of Gemology Tokyo
Bibliographic Information
- Other Title
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- 稀少な青色ターフェアイトについて
Abstract
Taaffeite is known as one of the rarest stone that was discovered in a parcel of faceted stones by Count Taaffe of Ireland in 1945. Although he judged as a piece of spinel with the mauve colour at the first glance, he noticed that the stone showed a slight birefringence. This stone was later confirmed as a new mineral species. Most of the stone exist from mauve to violet, red is reported as rare colour. We have obtained a faceted taaffeite, which is a blue colour from Sri Lanka. The blue is extremely rare since discovery. Taaffeite spectral characteristics are similar to spinel. (Schemetzer et, 1989) Blue is colored with iron or cobalt contents, red is caused by chrome contents. Compared with the spectral characteristics of the spinel and the taaffeite, this exceptional blue colour taaffeite is expected containing cobalt. Therefore we examine it without destruction because of it’s rarity. We are due to report the blue taaffeite properties with some of spinel and taaffeite samples.
Journal
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- Abstract of Papers Presented at Annual Meeting of the Gemmological Society of Japan
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Abstract of Papers Presented at Annual Meeting of the Gemmological Society of Japan 37 (0), 8-, 2015
The Gemmological Society of Japan
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Keywords
Details 詳細情報について
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- CRID
- 1390001205597233792
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- NII Article ID
- 130005485167
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- Text Lang
- ja
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- Data Source
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- JaLC
- CiNii Articles
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- Abstract License Flag
- Disallowed