






锂紫玉的历史与知识
Kunzite is a relative newcomer to the array of colored stones available for use in jewelry.


Sapphire Rush Near Ambatondrazaka, Madagascar (英语)
A newly found deposit of sapphire in Madagascar is explored.


GIA Gübelin(古柏林)宝石项目:各种宝石(钠柱晶石 — 钠沸石)
Among the collection assembled by Dr. Edward Gübelin are a number of uncommon gemstones from many worldwide localities.




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.





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