The distinguishing features of natural and Synthetic Green sapphires cut dark blue protolith to show the multidirectional color of green or blue-green on the front, then natural green sapphires can be formed.
Amethyst is a tripartite crystal system, the crystal is hexagonal columnar, the cylindrical surface is transverse, there are left shape and right shape, twin-crystal is very common. The hardness is 7. The crystal often contains irregular or winged gas-liquid inclusions.
Tourmaline has complex composition and color. The international jewelry industry is basically divided into commercial varieties according to the color of tourmaline, and the more colorful the color, the higher the value.
Garnet, called ziyawu or ziyawu in ancient China, is a group of minerals that have been used as gemstones and abrasives in the bronze age. The common garnet is red. Garnet English “garnet” comes from Latin “granatus” (grain), which may come from “Punica granatum” (pomegranate). It is a plant with red seeds, and its shape, size and color are similar to some garnet crystals.
Ruby [1] , which means corundum of a red color, is a type of corundum and consists primarily of aluminum oxide (AL 2O 3) . The red color comes from chromium (CR) , mainly Cr2O3, the content is generally 0.1 ~ 3% , the highest is 4% . Containing Fe, Ti and blue said Sapphire, non-chromium CR color of other colors of corundum also collectively known as Sapphire.
Red garnet is the aluminum garnet series of magnesium aluminum garnet, belongs to the common varieties of garnet. The red color of red garnet can make people have irresistible charm, attract happiness and eternal love, increase self-confidence, is the stone of women.
Topaz is pure transparent but often opaque due to impurities in it. Topaz is typically wine-colored or pale yellow. But it could be white, gray, blue, green. Colorless topaz, when well cut, can be mistaken for a diamond.
TSAVORITE (TSAVORITE) chemical name is chrome vanadium calcium aluminum garnet, because contains trace amounts of chromium and vanadium, delicate Emerald Green, pleasing to the eye. Kenya’s Shafe National Park was discovered by geologist Campbell Brydges in the late 1960s.
China is one of the major producers of turquoise. Turquoise is produced in Zhushan County, Yunxi County, Anhui Ma’anshan, Shaanxi Baihe, Xichuan, Henan, Hami, Xinjiang, Wulan, Qinghai and other places.