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Gemstones, Minerals & Fossils
Lapidary
Sneaky Gems.
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<blockquote data-quote="Lefty" data-source="post: 327384" data-attributes="member: 2976"><p>Yeah, I finish topaz with 100,000 as well, usually on a Matrix. I don't recall I ever had much success using alumina. Topaz is pretty hard stuff.</p><p></p><p>Many of the pieces of topaz I have are crystals from Mount Gibson, so they are still shiny and sharp-edged and not weathered and rounded like a lot of the O'Briens creek stones seem to be. I've cut plenty of the crystal points straight down on the m axis, the shape perfectly suits one of my fave designs, <a href="http://www.rockhounds.com/rockshop/gem_designs/arrow/arrow.gif" target="_blank">Jack Rowland's "Arrow"</a>. It's a beautiful design and the reflection patterns really stand out in pale blue topaz. I've never had any problems from cutting it this way. Just the occasional stone misbehaves but you can experience that with pretty much any natural stone I think.</p></blockquote><p></p>
[QUOTE="Lefty, post: 327384, member: 2976"] Yeah, I finish topaz with 100,000 as well, usually on a Matrix. I don't recall I ever had much success using alumina. Topaz is pretty hard stuff. Many of the pieces of topaz I have are crystals from Mount Gibson, so they are still shiny and sharp-edged and not weathered and rounded like a lot of the O'Briens creek stones seem to be. I've cut plenty of the crystal points straight down on the m axis, the shape perfectly suits one of my fave designs, [url=http://www.rockhounds.com/rockshop/gem_designs/arrow/arrow.gif]Jack Rowland's "Arrow"[/url]. It's a beautiful design and the reflection patterns really stand out in pale blue topaz. I've never had any problems from cutting it this way. Just the occasional stone misbehaves but you can experience that with pretty much any natural stone I think. [/QUOTE]
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Gemstones, Minerals & Fossils
Lapidary
Sneaky Gems.
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