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Gemstone Sales: |
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"Tourmalike
Regular" changes from pink to green |
"Tourmalike
Plus" changes from purple to blue |
YOU HAVE TO SEE IT TO BELIEVE IT!
TOURMALIKEThis is
laser grade silica that exhibits no bubbles or strain lines. It's principle
coloring components are dysprosium, which gives the material it's watermelon
red color in daylight/incandescent light , and praseodymium which exhibits
a green color under fluorescent light. TOURMALIKE "+"This laser grade silica is virtually the same as the TOURMALIKE regular except that its's coloring components are Neodymium in high concentration and small traces of Rare Earths. The Neodymium reacts with Mercury fluorescent light to change from the amethyst color to blue. Hardness, R.I., Dispersion & cutting angles - same as Tourmalike Reg. |