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<p>[QUOTE=&quot;desertgem, post: 3173272, member: 15199&quot;]Or paint them with thick gunk.</p><p><br /></p><p>The same rules apply to trace elements in minerals. Al2O3 is aluminum oxide ( old fashion sandpaper or quartz). Mainly transparent colorless corundum. Add the right level of chromium you can have a&nbsp; Ruby ( red) . Other contaminants in other corundum such as iron, magnesium, copper, can make different colors called Sapphires( because all red are rubies), such as blue, pink, green, yellow, etc. When these contaminants electrons distort the arrangement of the crystal matrix ( aluminum oxide) you get the non-stable reactions that change energy level, and color, in presence of energy. That&#039;s why jewelers don&#039;t just show colored stone rings to serious customers by holding it up. Usually they move the customer to a directional lighted area to give the spiel. Always insist on wearing it in outside light ( take the guard along also) to decide.</p><p><br /></p><p>If any one is further interested, read the Wiki posting for Ruby Laser, and see more what that electron energy can do. <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie1" alt=":)" unselectable="on" unselectable="on" />&nbsp;&nbsp; Jim[/QUOTE]</p><p><br /></p>

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