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Jewelry classification 3

  • Author:Meilanxuan
  • Source:fashionjewelryfactory.com
  • Release on :2017-08-04
14. Topaz: Topaz is aluminum fluorosilicate, orthorhombic. The formula is al2 (f, oh) 2sio4. Topaz species include brown to yellow brown, light blue to light blue, pink, colorless, and other varieties.

15. Tourmaline: extremely complex boroaluminosilicate, which may contain one or more of the following components: magnesium, sodium, lithium, iron, potassium or other metals. The proportions of these elements are different and the colors are different. The types of tourmalines include red, green, blue, yellow and orange, colorless or white, black, variegated gemstones, cat's eye tourmaline, color stone-like tourmaline.
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16. Gold green jade: a spinel family minerals, aluminates. The main component is alumina beryllium, is a orthorhombic system. The formula is beal2o4. The types of gold and green jade, including stone, cat's eye stone, variable stone cat's eye gem and some other variants.

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17. Beryl: beryl in its pure state is colorless; different variants have different colors because of the presence of trace metal oxides. 

In the presence of chromium oxide or vanadium oxide is usually become emerald, and aquamarine is due to ferrous oxide coloring. Cesium beryl is due to the presence of magnesium, while the beryllium is made of iron oxide coloring. The formula is: be3al2 (sio3) 6. Beryls include emerald, sapphire, maxixe beryl, beryllium, cesium beryl, other transparent varieties, cat's eye beryl, star beryl.

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