Aquamarine forms deep inside the earth. Unlike some minerals, this precious gem forms in a variety of rock, including both igneous and metamorphic rock. As a source of beryllium, the mineral beryl is fairly rare. That's because beryllium, is a rare element in and of itself, and therefore beryl can only form where there are large amounts of it.
Very fine quality of aquamarine semi precious stones. 14 carats oval aquamarine.
Blue Aquamarine Gemstone Chips Stone Semi Precious Gemstone chips Loose Gemstone Lot Mix Shape Size For Jewelry Making Latest Style Trending Jewelry Pendent Gemstone Chips Earrings Colored Stones Round Oval And Irregular Shapes Chips Supplier Manufacturer Wholesaler Exporter From Jaipur, Rajasthan, India
Blue Aquamarine Gemstone Cut Stone Semi Precious Gemstone Cut Stone Loose Gemstone Lot Mix Shape and Size For Jewelry Making Latest Style Trending Cut Stone for Jewelry Pendent Gemstone Cut Stone Earrings Colored Stones Round Oval And Irregular Shapes Cut Stone Supplier Manufacturer Wholesaler Exporter From Jaipur, Rajasthan, India
Ethiopian Aquamarine is Naturally given its beautifully elegant blue color by the heat in the mountains, it is widely appreciated around the world for its intrinsic value and naturally provided color. In the world of jewelry, Ethiopian Aquamarine is the most loved stones out there and is used to make rings, earrings, necklaces and the like.
15crt aquamarine Natural stone Free delivery. Interested bayar welcome.
Supplier: Rough precious and semi precious stones, including aquamarine, blue agate, blue corundum, garnet, rhodolite, jasper, morganite, quartz, ruby, sapphires, tourmaline.
Kyanite is a typically blue silicate mineral, commonly found in aluminium rich metamorphic or sedimentary Rocks.Kyanite is a member of the alumino-silicate series, which includes the polymorphs, alusite and sillimanite, which have the same chemical composition (Al2O3.SiO2) as alusite and sillimanite but it is distinguished from those two minerals by its physical properties. Refractory Materials : Refractories are heat-resistant materials that constitute the linings for high-temperature furnaces and reactors and must be able to withstand high temperatures, mechanical wear, thermal shock and chemical corrosion. Kyanite is used in refractories sometimes in raw form and mostly in calcined form. 1. Raw kyanite: Kyanite has high expansion coefficient. Moreover, its calcination into mullite is also accompanied by a significant expansion in volume (20%). Raw kyanite as a refractory material is thus particularly beneficial when shrinkage from other materials and binders needs to be compensated for. 2. Calcined kyanite: Kyanite calcined to mullite is widely utilized in refractory products. Mullite exhibits excellent refractory properties like thermal stability (it is stable upto 1810 C), thermal shock resistance, creep resistance, and high hot strength and chemical corrosion resistance. Refractory bricks made from calcined kyanite possess outstanding: Higher modulus of rupture. Lower co-efficient of expansion. Increased firing range and temperature. Increased durability, about three times that of ordinary bricks. More resistance to salt attacks. Very low co-efficient of spalling. Kyanite refractories find application used in glass industry as well as various metallurigical industries (except steel metallurgy, as mullite refractory bricks are corroded by iron slag and are not highly resistant to metallic oxides). Kyanite has been a supplier of raw kyanite for many years. Our kyanite is high in purity, free from iron oxide, silica, bases and alkalis. These impurities considerably reduce the softening point of mullite and thus affect the refractory properties. kyanite is often associated with the mineral corundum. This is advantageous as it reduces the percentage of free silica when calcined. All in all. Specfications : Al203:- 35-52% Fe2o3:- 1-5%
Deep Blue eye clean good quality aquamarine from beryl family with hardness of 10
Supplier: Aquamarine stone, rare piece
