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Gemstones, Minerals & Fossils
Gemstones and Minerals
Faceting Spinel (Blackjack)
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<blockquote data-quote="Wally69" data-source="post: 452843" data-attributes="member: 1916"><p>Not yet, at some stage I will try to sort them out and can see some SG testing being done as I know I have some black sapphire in the mix. </p><p></p><p>Thinking I have some tin crystals in there as well. Most of the tourmaline and spinel is identifiable by the structural differences but the waterworn ones are guesswork.</p><p></p><p>Doing a streak test sorting might help sort as well.</p></blockquote><p></p>
[QUOTE="Wally69, post: 452843, member: 1916"] Not yet, at some stage I will try to sort them out and can see some SG testing being done as I know I have some black sapphire in the mix. Thinking I have some tin crystals in there as well. Most of the tourmaline and spinel is identifiable by the structural differences but the waterworn ones are guesswork. Doing a streak test sorting might help sort as well. [/QUOTE]
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Gemstones, Minerals & Fossils
Gemstones and Minerals
Faceting Spinel (Blackjack)
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