| Bigsiiksarty | Дата: Воскресенье, 28.06.2015, 17:27 | Сообщение # 1 |
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Among the collection assembled by Dr. Edward Gübelin are a number of uncommon gemstones from many worldwide localities. Documents, like the
ones below, present information on gemstones that range from occasional
use in jewelry to those that are quite rare and seldom faceted because
of the lack of suitable starting material.
http://www.gia.edu/gia-gem-project-various-gems-t-z
http://www.gia.edu/
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