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Showing 50 結果 for "strength of alexanderite"
2015年GSA(米国地質学会)年次総会

ボルチモアで行われたGeological Society of America(米国地質学会)の年次総会の概要。

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Blue chrysocolla in quartz
Chrysocolla In Quartz

A gemological examination of chrysocolla in quartz from Tucson’s AGTA show.

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Mixed-cut Oregon sunstone
Oregon Sunstone Update

An review of the Oregon sunstone seen at the Tucson gem shows.

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Baroque Chinese freshwater cultured pearls
Chinese Freshwater Pearl Culturing, Overall Market Summary

A review of Chinese freshwater cultured pearl production, with an update on the market for Tahitian, South Sea, and akoya cultured pearls.

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Daniel and Andre Assaf of the Tsavorite Factory
Tsavorite Garnet and Mahenge Red Spinel

A discussion of the current demand for tsavorite and spinel in today’s market.

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Four “ginger” garnets
Ginger Garnet, “Fancy” Tanzanite

Garnets and a wide variety of tanzanite at the Tucson gem shows.

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Multicolored gem suite
High-End Colored Gems

A unique assortment of colored gemstones as seen at the GJX show in Tucson.

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Tanzanian marquise-cut spinel
Exceptional Red Spinels and Fine Aquamarine

Beautifully cut spinel and aquamarine was among the finds at Tucson’s GJX show.

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Alexander Kreisによる彫刻がほどこされた石
サンストーン、ルチルクォーツ、ベリルにおけるひときわ優れた宝石の芸術 - ツーソン2014

アリゾナ州のツーソンで行われたGems and Jewerly Exchange (宝石と宝飾品展示会) ショーで見られた、見事なカット技法やデザイン例。

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Agate and leaf pendant
Gemstones and Jewelry Inspired By Nature

At AGTA, exquisite jewelry pieces inspired by natural scenes were on view.

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