Semi Precious stone tiles
Gem is generally divided into precious stones and Semi Precious stone tiles. There are four precious stones, namely diamonds, rubies, sapphires and emeralds, and the rest of the gem, like crystal, agate, red chalcedony and other semi-precious stones. The main Semi Precious stone tiles varieties are: tourmaline, crystal, lapis lazuli, topaz (topaz), sea blue treasure, garnet, olivine, tiger eyes stone (wood stone), elongated stone (moonlight stone) Obsidian, malachite, turquoise, red stone, purple dragon crystal, Dongling jade, fluorite, agate, chalcedony, Czech meteorite, opal, Shu to stone, spodumene, calcite and so on. In addition, organic gemstones, amber, pearls, corals are also classified as Semi Precious stone tiles.
Semi Precious stone tiles of many varieties, different semi-precious stones have different characteristics, identification methods, the value is also different.