据说产自 Batakundi/Basil 地区的蓝宝石
Summer 2019 G&G Publication Information
This document provides the publication information for Gems & Gemology
Summer 2020 G&G Publication Information
This document provides the publication information for Gems & Gemology
Winter 2019 G&G Publication Information
This document provides the publication information for Gems & Gemology
Winter 2020 G&G Publication Information
This document provides the publication information for Gems & Gemology
Fall 2020 G&G Publication Information
This document provides the publication information for Gems & Gemology
Spring 2019 G&G Publication Information
This document provides the publication information for Gems & Gemology
Fall 2019 G&G Publication Information
This document provides the publication information for Gems & Gemology
GIA Gübelin（古柏林）宝石项目：各种宝石（磷锂铝石 — 斧石）
Among the collection assembled by Dr. Edward Gübelin are a number of uncommon gemstones from many worldwide localities.
Winter 2018 G&G Publication Information
This document provides the publication information for Gems & Gemology
A Solution to Diamond Color Grading Problems
Summer 2017 G&G Publication Information
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Fall 2015 G&G Publication Information
This document provides the publication information for Gems & Gemology
Summer 2016 G&G Publication Information
This document provides the publication information for Gems & Gemology
Spring 2017 G&G Publication Information
This document provides the publication information for Gems & Gemology
Fall 2016 G&G Publication Information
This document provides the publication information for Gems & Gemology
Spring 2018 G&G Publication Information
This document provides the publication information for Gems & Gemology
Summer 2015 G&G Publication Info
This document provides the publication information for Gems & Gemology
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