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An opaque crypto-crystalline variety of quartz of varying colours,
usually red, green, yellow, brown or white. It is of little value and
used mostly for inexpensive jewelry and small ornamental objects such
as ashtrays and candlesticks. |
Name |
Moh's |
Specific Gravity |
Structure |
Cleavage |
Refractive Index |
Double |
Disp. |
Pleochro |
Fluorescence |
| Jasper Quartz | 6.5+ | 2.58-2.91 | Hexagonal | None | About 1.54 | None | None | None | None |
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