High Purity Man Made Diamond Crystal

Silicon carbide (SiC), also known as carborundum /kɑːrbəˈrʌndəm/, is a semiconductor containing silicon and carbon. It occurs in nature as the extremely rare mineral moissanite. Synthetic SiC powder has been mass-produced since 1893 for use as an abrasive. Grains of silicon carbide can be bonded together by sintering to form very hard ceramics that are widely used in applications requiring high endurance, such as car brakes, car clutches and ceramic plates in bulletproof vests. Electronic applications of silicon carbide such as light-emitting diodes (LEDs) and detectors in early radios were first demonstrated around 1907. SiC is used in semiconductor electronics devices that operate at high temperatures or high voltages, or both. Large single crystals of silicon carbide can be grown by the Lely method and they can be cut into gems known as synthetic moissanite. SiC with high surface area can be produced from SiO2 contained in plant material.

Names

Preferred IUPAC name: Silicon carbide

Other names: Carborundum; Moissanite

Properties

Chemical formula: CSi

Molar mass : 40.10 g·mol−1

Appearance: Yellow to green to bluish-black, iridescent crystals

Density: 3.16 g·cm−3 (hex.)

Melting point: 2,830 °C (5,130 °F; 3,100 K)(decomposes)

Solubility: Insoluble in water, soluble in molten alkalis and molten iron

Electron mobility: ~900 cm2/V·s (all polytypes)

Magnetic susceptibility (χ): −12.8·10−6 cm3/mol

Refractive index (nD): 2.55 (infrared; all polytypes)

Hmois Grade A B C D E moissanite crystal

History

Early experiments:

Non-systematic, less-recognized and often unverified syntheses of silicon carbide include:

J. J. Berzelius's reduction of potassium fluorosilicate by potassium (1810)

César-Mansuète Despretz's passing an electric current through a carbon rod embedded in sand (1849)

Robert Sydney Marsden's dissolution of silica in molten silver in a graphite crucible (1881)

Paul Schuetzenberger's heating of a mixture of silicon and silica in a graphite crucible (1881)

Albert Colson's heating of silicon under a stream of ethylene (1882).

Use of our moissanite crystal, rough moissanite

Machine of our moissanite crystal, rough moissanite

Factory of our moissanite crystal, rough moissanite

Exhibition of our company

Bangkok Gem&Jewelry Fair 62nd

Package and shipment and payment of our moissanite crystal

 Why choose us:

（1. More than 100 staff and have more than 21 years’s experience in jewelry

（2.  we have two factory on is in Taiyuan and other one is in Gujiao

Taiyuan manufacture synthetic gemstones moissanite and CVD and HTHP products

Gujiao manufacture all kinds of the moissanite jewelry

（3. Unique styles, excellent quality and considerate services win general customers’ unanimous recognition and praise. We adhere to the management idea of regarding quality as life, innovation as driving force and customer first!

Moissanite  Maintenance

Below Hmois will introduce you to several maintenance issues.

(1. How to clean

Cold water immersion

Use a small bowl or teacup to soak the Moissanite in water for about 30 minutes, then use a small brush to gently scrub around moissanite Stone, then wave it in the water for a while, then take it out and wipe it with a paper towel.

(2. How to maintain

Care for the Moissanite ring, do not hit.

Moissanite is the hardest thing in the world after diamonds, but in fact it can't stand the collision. Especially the "claw-set" Moissanite, the waist is very fragile.

Care for the Mosang diamond ring, take good care of it.

Brand story

Hmois

In 1893, The French Nobel Prize winner Dr. Henry Moissan found these sparkling pieces of Sic.

In 1905, To order Dr. Henri moissan, the newly found gem was named Moissanite

Our company in order to celebrate the Dr. Henry Moissan, So named our brand to Hmois

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