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Al2O3 Trigonal Pink Sapphire Gem With Oval Cut For Ring

Al2O3 Trigonal Pink Sapphire Gem With Oval Cut For Ring

Minimum Order Quantity:1pcs
Delivery Time:According to quantity
Payment Terms:T/T, Western Union
Place of Origin:Chongqing, China
Price:280USD-500USD
Supply Ability:1000PCS per month
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Location: Chongqing Chongqing China
Address: Room 2-11,No.50 Yunhan Road,Chongqing China
Supplier`s last login times: within 1 hours
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Product Details

Al2O3 Trigonal Pink Sapphire Gem With Oval Cut For Ring


Introduction


Sapphire, which is derived from the Latin Spphins, which means blue; it belongs to the corundum group of minerals in the trigonal crystal system. In the gem world, all colors of gem-grade corundum other than rubies are called sapphires.


The main component of sapphire is alumina (Al2O3). Corundum contains trace elements such as iron (Fe) and titanium (Ti), and presents colors such as blue, sky blue, and light blue, among which the bright sky blue is the best.


Basic characteristics


These excellent optical, mechanical, thermal, chemical and electrical properties determine its important position and role in the military and civilian fields.


Synthesis experiments with rubies and sapphires began in the 1860s, but it was not until the early 20th century, when the Werner Leaf Furnace was born, that synthetic rubies were successful. Synthetic sapphire is crystallized from the melt, its main components are Al2O3, in the synthesis of the addition of trace amounts of Cr, then red, that is, synthetic ruby; If you add a trace amount of Ti, you become a synthetic sapphire.


Synthetic rubies and sapphires are very similar in appearance and nature to natural sapphires, so it is difficult to distinguish them. Now mainly according to the sample internal package differences for identification, such as synthetic ruby often contains bubbles, fine arc lines and so on. If the package is small, these phenomena may not be observed with a magnifying glass, and an optical microscope is needed to observe the energy-picking resolution.


The cutting of colorful gems is different from that of diamonds. Because of the wide variety and different crystal structure, different cutting methods are needed to show the gloss and color of gems, and to take care of the maximum, so there are various cutting methods.


Oval cutting is the most common way of cutting gemstones. The gems cut by the oval cutting method, viewed from above, have soft lines and can compete with diamonds in gloss, and have a strong fire color.


The best number of facets for round diamond cutting is 57 or 58, which is also the most ideal diamond cutting method. Now it is widely used, and many colored gems also use this type of cutting method. The round diamond-shaped cut makes the gem show the most shining fire color, so that the fire color is concentrated on the gem, which is particularly eye-catching.


The pear-shaped cut gem is like a crystal teardrop, giving people a beautiful and romantic feeling. Aquamarine, Morgan and other small fresh gems are more suitable for pear-shaped cutting. Like Aquamarine, it looks like a blue tear after being cut and is very popular with young girls.


Triangular cutting is used for gemstone pendants. The characteristic is that the apex and bottom of the cut gemstone are prominent, allowing everyone to see the natural luster of the gemstone, and the fire color will be better. Therefore, many gems are cut in triangles, such as aquamarine and morganite.


GeneralChemical FormulaAl2O3
Cystal SystemHexagonal system
Melting Temperature2040℃
ThermalThermal ExpansionParallel to C-axis:6.7*10-6
Perpendicular to C-axis:5.0*10-6
Specific Heat0.18 Cal/gm°K(25℃)
MechanicalDensity3.98-4.1g/cm3
Hardness9 Moh's Scale
(Hv)≥1700kg/mm2
Modulus of Elasticity340-380Gpa
Compressive Strength2.1Gpa
Tensile Strength0.19Gpa
OpticalIndex of RefractionParallel to C-axis:1.769
Perpendicular to C-axis:1.769
Index of IR Transmission85%
ElectricalElectrical Resistance>1016Ω/cm(25℃)
Dielectric Constant7.5-10
ChemicalErosion ResistanceCan not be corroded by adid or alkali at mormal temperature, only can be corroded by HF at 300℃


Why US?


1. We’re the rare source manufacturer of color sapphire boule, and the most professional factory of sapphire processing, especially the special watch case.

2. We have our own sapphire grown equipent with CZ and KY method.

3. Professional customized production according to the drawing provided by clients.

4. Precision work of sapphire processing and polishing.

5. Experienced technicians and skilled workers.


FQA

1. Are you a trading company or factory?

We are a professional factory of sapphire products, also a trading company .


2.Can you do customized products?

Yes, we specialized in customized production or OEM work.

CAD,3D drawing are needed.


3.Could you provide samples?

Yes, we could provide samples with a charge, but if you place the order with a quality above 100pcs, the sample charge will be refunded.


4.What’s the delivery time?

It depends on the type of products and the quality.

For watch case, the regular time is around 5-8 weeks for 200pcs according to the difficulty of the processing.


5.How about the payment?

T/T payment is prefered.


6.How about the delivery?

Mostly by air, like DHL, Fedex.


China Al2O3 Trigonal Pink Sapphire Gem With Oval Cut For Ring supplier

Al2O3 Trigonal Pink Sapphire Gem With Oval Cut For Ring

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