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Gemstones, Minerals & Fossils
Gemstones and Minerals
Faceting Spinel (Blackjack)
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<blockquote data-quote="Wally69" data-source="post: 451712" data-attributes="member: 1916"><p>Pull out a few from my black box</p><p></p><p><img src="https://www.prospectingaustralia.com/forum/img/member-images/1916/1542080327_b916dfd9-a3a2-409e-8de5-27c0f32cb0d7.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>The two on the top right hand side of the coin are black tourmaline , I have found that they contain voids throughout the stones I have touched up to date, although the bigger crystal, found last week in the New England, looks to be a bit denser and might be worth having a crack at.</p><p></p><p>I have selected the three highlighted stones to work on, one is a clean pyramidal crystal while the others have surface character. First step is to hit them with a 1000 diamond disc to see what happens.</p><p></p><p><img src="https://www.prospectingaustralia.com/forum/img/member-images/1916/1542080646_4d327dbb-71a8-4e2b-b1c1-6c28408b756c.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>Looks like some very slight variation in the surface texture. Some defects extend into the stones and there is an odd bubble or two but generally speaking, I think all three show promise, just need to cut away the defects.</p><p></p><p>Yours look like they will behave the same, and I also see the odd pyramid shape in amongst your hoard</p><p></p><p>Stay tuned........ :fire: :beer: :beer:</p></blockquote><p></p>
[QUOTE="Wally69, post: 451712, member: 1916"] Pull out a few from my black box [img]https://www.prospectingaustralia.com/forum/img/member-images/1916/1542080327_b916dfd9-a3a2-409e-8de5-27c0f32cb0d7.jpg[/img] The two on the top right hand side of the coin are black tourmaline , I have found that they contain voids throughout the stones I have touched up to date, although the bigger crystal, found last week in the New England, looks to be a bit denser and might be worth having a crack at. I have selected the three highlighted stones to work on, one is a clean pyramidal crystal while the others have surface character. First step is to hit them with a 1000 diamond disc to see what happens. [img]https://www.prospectingaustralia.com/forum/img/member-images/1916/1542080646_4d327dbb-71a8-4e2b-b1c1-6c28408b756c.jpg[/img] Looks like some very slight variation in the surface texture. Some defects extend into the stones and there is an odd bubble or two but generally speaking, I think all three show promise, just need to cut away the defects. Yours look like they will behave the same, and I also see the odd pyramid shape in amongst your hoard Stay tuned........ :fire: :beer: :beer: [/QUOTE]
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Gemstones, Minerals & Fossils
Gemstones and Minerals
Faceting Spinel (Blackjack)
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