Topaz is a silicate mineral of aluminium and fluorine with the chemical formula Al₂SiO₄(F, OH)₂. Topaz is found colours such as colourless, blue, brown, orange, grey, yellow, green, pink and reddish-pink. Orangy-Pink and bright yellow to deep golden brown hue topaz are known as Imperial Topaz. Naturally occurring blue topaz is quite rare. Typically, colourless, […]
Zircon is nesosilicates group mineral. Its corresponding chemical formula is ZrSiO4. The name derives from the Persian zargun, meaning “gold-hued”. Zircon is a popular gemstone that has been used for nearly 2000 years. The crystal structure of zircon is a tetragonal crystal system with 7.5 hardness according to the Mohs Hardness scale. Zircon is also very resistant to heat and […]
A rare variety of natural sapphire, known as colour-change sapphire, exhibits different colours in a different light. Sapphire is a precious gemstone, a variety of the mineral corundum, consisting of aluminium-oxide with trace amounts of elements such as iron, titanium, chromium, copper, or magnesium. Sapphire deposits are found in Eastern Australia, Thailand, Sri Lanka, China, Vietnam, Madagascar, Greenland, East […]
Ceylon Natural Lotus Spinel very attractive colour stone unearthed from the city of gem Ratnapura, Sri Lanka. It has very good reactions with Ultra Violet Light. We found this stone from the Elapatha Mineral City of Gem Ratnapura. Spinel is the magnesium-aluminum member of the larger spinel group of minerals with chemical formula MgAl₂O₄. Spinel […]
