5A Grade 3*5-10*14mm Machine Cut Oval Cut 8# Dark Red Corundum Loose Gemstone Synthetic Corundum 8# Red Ruby Gemstone

5A Grade 3*5-10*14mm Machine Cut Oval Cut 8# Dark Red Corundum Loose Gemstone Synthetic Corundum 8# Red Ruby Gemstone - Image 2

5A Grade 3*5-10*14mm Machine Cut Oval Cut 8# Dark Red Corundum Loose Gemstone Synthetic Corundum 8# Red Ruby Gemstone - Image 4

5A Grade 3*5-10*14mm Machine Cut Oval Cut 8# Dark Red Corundum Loose Gemstone Synthetic Corundum 8# Red Ruby Gemstone - Image 5

5A Grade 35-1014mm Machine Cut Oval Cut 8# Dark Red Corundum Loose Gemstone Synthetic Corundum 8# Red Ruby Gemstone

5A Grade 3*5-10*14mm Machine Cut Oval Cut 8# Dark Red Corundum Loose Gemstone Synthetic Corundum 8# Red Ruby Gemstone

The Popular Colors of Corundum:
Pink Sapphire: 1#, 2#, #3; Ruby Red: #5, #7 and #8
Blue Sapphire: #33 Light,#34 Medium and #35 Dark. Yellow Sapphire: #20 and #22
Alexandrite Color change: #45 and #46, Padparadshah: #55, White Sapphire : #12, Kunzite: #60 and #61, #65

Corundum Stones Colors and Shapes Chart Google Album:
https://photos.app.goo.gl/3Fn9KpY7rqCQLbPr6

Description
QQ GEMSTONE WHOLESALE

5A Grade 3*5-10*14mm Machine Cut Oval Cut 8# Dark Red Corundum Loose Gemstone Synthetic Corundum 8# Red Ruby Gemstone

What is Corundum and What are its Basic Qualities?

A: Corundum is an aluminum oxide that commonly forms hexagonal barrel-shaped prisms that taper at both ends or as thin tabular hexagonal plates. It has a hardness of 9 on the Mohs scale, making it one of the most durable commercial gemstones. It has no dominant cleavage and fractures in a conchoidal manner. A high density of ~4.0 g/cm3 (most silicate minerals are ~2.6 g/cm3) results in corundum occurring in secondary placer deposits and recoverable by panning methods, similar to how you would recover placer gold.

Corundum comes in all colours of the rainbow but is most commonly found as opaque crystals with dull colours. Red corundum is called ruby, blue corundum is called sapphire, and all other colours are called fancy sapphires. Some varieties of corundum will fluoresce under short wave and long wave UV light if there is enough chromium in the crystal structure but little iron, which tends to quench any emitted energy.

CORUNDUM COLOR CHART

Corundum and Spinel colors-6mm Round stones:

Physical Properties of Corundum:

Mohs Hardness: 9

Specific Gravity: 3.90 to 4.05

Cleavage Quality:None

Fracture: Uneven,Conchoidal

Optical Properties of Corundum:

Refractive Index: 1.758 to 1.780

Optical Character: Uniaxial/-

Birefringence 0.007 to 0.010

Pleochroism Dichroism: blue - violet-blue and greenish-blue; green - yellowish-green; yellow - pale yellow; purple - violet; orange, yellowish-red - deep crimson.

Dispersion:0.018

OUR ADVANTAGE

Factory & Manufacturer since 2015, strong productive ability.
Ensure the large quantity supply of product.
We are one of the largest manufacturers & Suppliers of Loose gemstone in Wuzhou City.
Strict quality inspection:
15 production processes, 9 inspection processes, more than 8 experienced QC check Every gemstone has its quality assurance.

GUARANTEE

30 days return policy without using and damage of the stones.
Bulk product quality is not same as samples.
Gemstones are not same as the order list.

Customization Options

Customize shape size and color (Min. order: 100 pieces)
Customized logo (Min. order: 50 pieces)
Customized packaging (Min. order: 50 pieces)
Graphic customization (Min. order: 50 pieces)

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Details: Stone type (Material), Colors, MM Size or Ct weight, The Shapes or Cuts and Appr. Quantity (Pieces or cts ): , So that we can quote you the price accordingly, and check the freight cost for you at the same time.
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Contact Us

We don't show the wholesale price in our website, we quote wholesale prices based on client's order quantity and requirements. if you want to get wholesale , feel free to contact our sales to get more information, we will reply you soon. thanks for your attention. QQ GEMS professional in wholesale high quality Loose Cubic Zirconia stones, Moissanite Diamond Gemstones, Lab Grown Diamond, Lab created gems, Synthetic Opal Gems,Nano Gemstones, Simulated Glass Gems , Synthetic gemstones and Natural Gemstones with hand-cut or Machine cutting, gemstones with quality from A quality, AAA quality and Top AAAAA quality jewelry making and distribution. thanks for your cooperation.

5A Grade 3*5-10*14mm Machine Cut Oval Cut 8# Dark Red Corundum Loose Gemstone Synthetic Corundum 8# Red Ruby Gemstone

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