ok... so it is probably a crystalline quartz; how is it

来源: panzerkom 于 2009-05-22 13:33:16 [] [博客] [旧帖] [给我悄悄话] 本文已被阅读： 次 (232 bytes)
本文内容已被 [ panzerkom ] 在 2009-05-23 06:32:53 编辑过。如有问题，请报告版主或论坛管理删除.
different from other amethysts you got? if it's just the color, that would still put it in the same family as amethysts.

another thing you can do is to test its surface hardness by trying to scratch a piece of glass with it
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