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  • Pentagon Shape Ruby Red dark color 7# Corundum Ruby Red faceted cut 7.5x4.65mm gemstone
  • Pentagon Shape Ruby Red dark color 7# Corundum Ruby Red faceted cut 7.5x4.65mm gemstone

Pentagon Shape Ruby Red dark color 7# Corundum Ruby Red faceted cut 7.5x4.65mm gemstone

Category: Ruby Dark Red #7

Loose Corundum Ruby Red 7# Dark color Gemstones:
Color: Ruby Red #7
Shape/Cut:Pentagon Shape Faceted Cut
Size: 7.5x4.65mm
Quality Grade: AAA
Color chart: https://www.frgems.com/corundum-color-chart

Loose Synthetic Lab Created Corundum Ruby Red #7 Color Pentagon Shape Faceted Cut 7.5x4.65mm Gemstones Wholesale from China Suppliers and manufacturers.

--Also Called as Synthetic Ruby, Synthetic Red Corundum,
--We Supply and Manufacture Corundum Ruby Red stones in All kinds of popular Shapes/cuts and Sizes;
--Color Shades:Ruby Red 5#, Ruby Red 7# dark, Ruby Red Dark(Garnet) 8#;



Wholesale Corundum 7# Ruby Red dark color Pentagon faceted cut 7.5x4.65mm gemstone


Synthetic Corundum 7# Ruby Red dark color Pentagon faceted cut gemstone supplier

What's the Ruby Red Color Stone?

Which colour would you spontaneously associate with love and vivacity, passion and power? It's obvious, isn't it? Red. Red is the colour of love. It radiates warmth and a strong sense of vitality. And red is also the colour of the Ruby Stones, the king of the gemstones. In the fascinating world of gemstones, the ruby red is the undisputed ruler. For thousands of years, the Ruby red Gemstones has been considered one of the most valuable gemstones on Earth. It has everything a precious stone should have: magnificent colour, excellent hardness and outstanding brilliance. In addition to that, it is an extremely rare gemstone, especially in its finer qualities. And

Now you can buy Synthetic Corundum Created Ruby Color Loose gemstones with an excellent simulated of Real Ruby Gemstones at Wholesale Direct Factory prices from the Real China Professional Manufacturer and Supplier.

We have quite a collection of Ruby Red 5# Color Loose Stones such as popular Round Brilliant Cut,Princess Cut,Emerald Cut,Cushion Cut and also unique heart, Oval,Octagon,Marquise, Pear,Star Cuts and More...

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.

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.

Conrundum VS other Gemstones:


Nano CZ Glass Corundum Spinel Topaz Qurtz Comparison

Conrundum Color Chart and Shapes & Size Chart :

Corundum-and-Spinel-colors-6mm Round-stones Gemstones shapes and sizes chart


  • Factory & Manufacturer since 2008, strong productive ability.
  • Ensure the large quantity supply of product.
  • We are one of the largest manufacturers & Suppliers of Loose gemstone in China Wuzhou City.
  • Strict quality inspection:
  • 15 production processes ; 9 inspection processes ; more than 8 experienced QC check ;
  • Every gemstone has its quality assurance.


  • 30 days return Policy without using and damage of the gemstones;
  • Bulk product quality is not same as samples;
  • Gemstones are not same as the order list;

Synthetic Corundum Ruby Red #7 Color Elongated Cushion Shape Faceted Cut 9x7mm gemstones
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