Rubies and sapphire round balls and other shapes
Sapphire DCX
Blue Sapphire Royal Blue 3.03 CTS OVAL 9.22*6 95*5 72mm
Natural sapphire 6200g + certificate
This is an exclusive and rare category of the gemstone. The price for this category starts from USD1000 per carat and goes up to USD 5,000 plus per carat. Please share your contact details and our Blue Sapphire expert will call you to share the exact price. Gemstone: Blue Sapphire Treatment: Unheated and Untreated (No Indications Observed) Cut: Mixed Cuts Certification: Free Lab Certificate Quality: Super Luxury Shape: Oval Composition: Natural Return Policy: 10 Day Replacements* Origin: Sri Lanka (Ceylon) Colour: Blue Price Suffix: per carat
100% Natural, Unheated and Laboratory Certified Blue, Yellow, Vivid Blue & Vivid Pink Sapphires. various shapes Price starting from $3450 - $ 600
According to the customer's requirements
The specific gravity of stone is around 4.1.
Crystal Materials: 99, 996% of Al2O3, High Purity, MonocrystallineCrystal quality: Block marks, twins, Color, micro-bubbles and dispersal centers are non-existent. Diameter: 2", 3", 4", 5" ~ 7"In accordance with the provisions of standard production Thickness: 250, 15um, 330, 15um, 430, 15um, 500, 15um, 550, 15um, 650, 15umin accordance with the provisions of standard production Orientation: C- plane , A-plane, R-plane, M-plane C- plane to M-plane or A-plane Any orientation, Any angle. Primary flat length: 16.0,0.8mm, 22.0,1.0 mm, 32.5,1.5 mm In accordance with the provisions of standard production TTV 10um 15um 20um 30um LTV 5um 10um 15um 20um TIR 10um15um 20um 30um BOW 10um 15um 20um 30um Warp 10um 15um 20um 30um Front Surface: Ra< 0.2nm (By AFM) Back Surface: Fine ground (Ra=0.8 to 1.0 um); Polished (Ra< 0.2nm). Cleaning/packaging: 100 clean room cleaning, vacuum packaging.
Natural yellow suphire.
Ring weight:2.90 gram Gemstone weight:1.80 carat Ring size:6, 7, 8 Stone shape:round
Blue sapphire - Semi precious stone
Natural medium dark blue sapphire.
Burned and un burned yellow sapphire.
Cut and polished precious stones like ruby, emerald, sapphire.
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%
Blue-green-algae-(skipper-khad).
Sapphire blue, green, busparagam and more stones.
Natural gems receiving from Sri Lanka, blue sapphire, garnet, spinal.
Buy Government Certified Blue Sapphire Gemstone from leading gemstone
