Ceylon sapphire, blue sapphire.
Sapphire Crystal Window Sapphire windows are used in some non-ornamental applications, including infrared optical components, such as in scientific instruments; high-durability windows and movement bearings;Due to sapphire's remarkable hardness (third hardest mineral, right behind diamond and moissanite). Features of Sapphire Crystal 1. High-hardness - abrasion resistance 2. Transparency - in the range from ultraviolet to infrared light (0.15 - 5.5 �µm) 3. Chemical resistance and heat resistance - resist almost all kinds of acid and alkaline, heat up to 2000 �ºC. 4. Suitable for the application of insulation property required. Sapphire Crystal Property Crystal structure: Hexagonal Lattice: a=4.785�?, C=12.991�? Density: 3.98g/cm3 Transmission Range: 150-5500nm Melting Point: 2040�°C Specific Heat: 0.418 W.s/g/K Thermal Conductivity: 25.12 W/m/K Thermal Shock Resistance: 790 W/m Thermal Expansion Coefficient: 5.8x10E-6/K dn/dT: 13x10E-6/K @633nm Hardness: 9 Mohs Refractive Index: 1.83 @0.26mm, 1.76 @0.63mm, 1.58 @5.57m Sapphire Crystal Applications - UV and IR Optics - Windows for High Temperature and Pressure, Corrosion Resistance, Abrasion Resistance - Heat Sink and Thermocouplers; Semiconductor Wafer Carriers - Electrical Insulators - Thin Film Deposition - Transparent Electronic Substrate - Silicon on Sapphire Wafers; Superconductor Substrate Sapphire Crystal Window Specifications Diameter Tolerance(mm): +0.0/-0.2 (General), +0.0/-0.1 (High Precision) Thickness Tolerance(mm): �±0.2 (General), �±0.05 (High Precision) Clear Aperture: >75% (Small Size), >90% (Large Size) Parallelism: 3 min. (General), 10 sec. (High Precision) Surface Quality: 80/50 (General), 40/20 (High Precision) Flatness (per 25mm@633nm): �»(General), �»/4 (High Precision) Bevel (face width x 450 0)
Wall type. An inexpensive barometer for elementary study of weather, the dial shows mercury pressure equivalent in both English and mill bar scales. It has a hook for suspension and a stationary hand for comparison with previous reading. The movement is housed in a round plastic case.
Emerald and sapphire .Manufacturer & Exporter
Blue sapphire, yellow sapphire, topaz.Clearing agent
Yellow sapphire.
Blue sapphire.
Blue sapphires.
Ruby, spinel, amethyst, sapphire, garnet, rose quartz, quartz, aquamarine, topaz, jade, moonstone gemstones..
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Name : Mercurial Desk Type Sphygmomanometer Place of Origin : China Brand Name : OEM Model Number : MK01- 305 Power Source : Manual Warranty : 1 Year After-sale Service : NONE Power Supply Mode : Plug-in Material : Metal, Steel Shelf Life : 2 years Quality Certification : CE Instrument classification : Class II Safety standard : None Type : Blood Pressure Monitor Specification : Cotton Cuff+Latex Bladder Application : Arm Use Advantage : Manufacturer Certificate : CE,ISO, Carton Size : 34*23.5*37cm G.W/N.W : 12/11 KG Usage : Home &Hospital use
Natural gemstones - royal blue sapphires, pink sapphires, padpardscha sapphires.
Yellow sapphire gemstone.
Blue sapphire gemstone.
Yellow sapphire & all gems.
Rough Sapphires
Rough Sapphire in matrix. In various sizes origen Madagascar
2mm- 3.8mm = ( in 5 color grade in equal quantity. Rounds 150carets
Beautiful natural blue sapphire Weight : 1.65 cts Size : 7.1 x 6 x 3.1
5mm, 6mm( include three colors top to medium. Rounds 100 carets 5mm,6mm yellows