Name: Natural Heated Royal Blue Sapphire ( Brilliant Cut ) Carat : 2.45 CT Certificate: IGLC Certified Transfer : Bank Transfer Price : USD 690 Shipping: Worldwide Delivery via FedEx
Blue Sapphire (Heated) - 4.06cts Shape - Oval Dimension - 9.31x7.39x6.91mm Color - Blue Clarity - Eye Clean
Gemstone Name - Natural Sapphire Color - Vivid Royal Blue Shape/Cut - Cushion Weight - 2.02 Carats Clarity - Eye-Clean Treatment - Unheated Dimensions - 6.8x6.5x4.7mm Certification - On Request
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%
Buy Government Certified Blue Sapphire Gemstone from leading gemstone
Honing refers to a set of stones (sticks) assembled on the honing head put pressure on the work-Piece along the radial, and through rotating and moving back and forth for precision honing machine. When honing high hardness and toughness materials, the Diamond /CBN Efficiency of honing stone( stick) is 3-75 times higher than that of ordinary abrasive stone, and the honing efficiency of ordinary materials is also improved about 10 times. since Diamond/CBN honing stone (stick) wear is less, the shape retention is better, therefore, the higher honing accuracy and economic effect can be obtained. Diamond honing stick is used to process hard and brittle materials, such as honing high carbon steel, cast iron, cemented, carbide, etc. honing stick mainly used for honing high strength alloy steel, tool steel, stainless steel heat-resistant alloy steel. Customized is OK
based in Range northern area and we deal only Rough materials. We are dealing all kinds of Minerals Rocks, and Gemstons we are having our own 12 Mines in northern area our 80 products from our own mines and 20 we buy from another miners . We are exporting morethen 22 countries. We are specialist in Aquamarine specimen and crystal, Mica and Quartz in Bulk , Topaz, Diopside, black and Green Caped Tourmaline , Epidot, Sephen, Garnet, Amethyst, Petroliem Quartz, Feldspar, Emerald, Flourite, Routile Quartz , Petroleum Quartz etc. Note we deal only Rough materials
