Rubellite can be found in Madagascar, North America, Brazil, Myanmar (Burma), Africa, Siberia, Australia, Sri Lanka (Ceylon).Group of precious and semiprecious stones-both uncut and faceted-including ( clockwise from top left) diamond, uncut synthetic sapphire, ruby, uncut emerald, and amethyst crystal cluster.Ī gemstone (also called a fine gem, jewel, precious stone, semiprecious stone, or simply gem) is a piece of mineral crystal which, in cut and polished form, is used to make jewelry or other adornments. Valued for its ruby color, it exhibits a range of color from pink to red. Rubellite is a outstanding beautiful gemstone from the colourful family of the tourmalines. The enhancement of citrine is by heat in order to alter color and clarity. They can also be found in in the Ural Mountains of Russia, in Dauphine, France and in Madagascar. Like all quartz, the hardness of citrine is 7 (Moh Hardness).

The colors of citrine can range from sunny yellow to vibrant orange to golden brown. The color is aquamarine is from light blue, blue-green to dark blue.Ĭitrine is a amber colored variety of quartz. Aquamarine is a beryl with a hexagonal crystal structure and a chemical formula of Be3Al2(SiO3)6, a beryllium aluminium silicate mineral. Amethyst is the birthstone for the month of February.Īquamarine, the semi precious stone, is the sea-green gem variety of Beryl. Like all quartz, the hardness of amethyst on the Moh’s scale of hardness is 7.

Amethyst is a violet variety of crystallized quartz.

Jade ruby sapphire