The official crystal identification thread

NorthernTigress

Does anyone recognize this blue stone? I think it was identified as lapis when I bought it, but it isn't "sparkly".

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deeni

Spodumene?

Anyone know what this crystal is? I did the acid test, not Calcite. Thinking possibly Spodumene? Dark grey-green to yellow-green to clear in color. The larger, darker piece is actually really transparent when held up to the light. And they are all really fragile, break into length-wise slices if dropped (accidentally dropped one of the smaller pieces)
here's the pics I took:
http://s231.photobucket.com/albums/ee311/deenielove/Crystal/

any ideas could help! :)

-Deeni