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Overview of Gemstones in Silver Jewelry (1823 words) |
 | Quartz occurs naturally in many colors including a white variation known as milky quartz or milk quartz. |
| Quartz is available in dozens of colors and is the earth's most abundant mineral. |
| While fabrication of minerals such as emeralds, quartz crystals and diamonds can be performed in a laboratory under specific conditions, for our purposes were are limiting our definition to include only natural minerals, not those which are man-made. |
| Fused quartz tubes (358 words) |
| It is a doped quartz material that translate UV radiation into visible light, increase effect and improve on color. |
| It is compare with clean Fused Quartz, which absorbs essentially all UV and most visible radiation while maintaining transmittance efficiency in the infra-red spectrum range, and change UV and visible radiation for red radiation. |
| It is compare with milk fused quartz while have good transmittance efficiency in the infra-red spectrum range; in unit area can load a number of times energy. |
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