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OEM Serbice Al2O3 Green Sapphire Stone Gem With Classic Cut

Product Details

Place of Origin: Chongqing, China

Payment & Shipping Terms

Minimum Order Quantity: 1pcs

Price: 280USD-500USD

Packaging Details: Caron, Air bubble films

Delivery Time: 4-8weeks

Payment Terms: T/T, Western Union

Supply Ability: 1000PCS per month

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Specifications
Highlight:

OEM blue sapphire stone pendant

,

Al2O3 blue sapphire stone pendant

,

Al2O3 sapphire pendant gold

Material:
Sapphire
Growing Method:
CZ
Use:
Jewlery, Watch Case, Watch Glass
OEM:
Yes
Delivery Port:
Chongqing
Delivery Time:
According To Quantity
Color:
Yellow
Necklace:
Silver Or 18K Gold
Material:
Sapphire
Growing Method:
CZ
Use:
Jewlery, Watch Case, Watch Glass
OEM:
Yes
Delivery Port:
Chongqing
Delivery Time:
According To Quantity
Color:
Yellow
Necklace:
Silver Or 18K Gold
Description
OEM Serbice Al2O3 Green Sapphire Stone Gem With Classic Cut

OEM Serbice Al2O3 Green Sapphire Stone Gem With Classic Cut

 

OEM Serbice Al2O3 Green Sapphire Stone Gem With Classic Cut 0

 

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

 

Sapphire single crystal is a simple coordination type oxide crystal, which is anisotropic and belongs to the hexagonal crystal system. The lattice parameters a=b=0.4758nm, c=1.299 1 nm, α=β=90°, γ=120 °.

The light transmittance range of sapphire single crystal is 0.14-6.0μm, covering vacuum ultraviolet, visible, near-infrared to mid-infrared band, and has high optical transmittance in the 3-5μm band; it has high hardness (second only to diamond) , Mechanical and thermal properties of high strength, high thermal conductivity, high thermal shock resistance quality factor; stable chemical properties resistant to corrosion such as rain, sand, and salt spray; high surface smoothness, high resistivity and high dielectric properties .

 

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.

 

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.

 

General Chemical Formula Al2O3
Cystal System Hexagonal system
Melting Temperature 2040℃
Thermal Thermal Expansion Parallel to C-axis:6.7*10-6
Perpendicular to C-axis:5.0*10-6
Specific Heat 0.18 Cal/gm°K(25℃)
Mechanical Density 3.98-4.1g/cm3
Hardness 9 Moh's Scale
(Hv)≥1700kg/mm2
Modulus of Elasticity 340-380Gpa
Compressive Strength 2.1Gpa
Tensile Strength 0.19Gpa
Optical Index of Refraction Parallel to C-axis:1.769
Perpendicular to C-axis:1.769
Index of IR Transmission 85%
Electrical Electrical Resistance >1016Ω/cm(25℃)
Dielectric Constant 7.5-10
Chemical Erosion Resistance Can 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.

 

Send your inquiry
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