Ruby (21.40 Carat )
15.51 x 15.51 mm
Stone Type : | Ruby |
Stone Shape : | Cushion |
Stone Weight : | 21.40 carat |
Length X Width : | 15.51 x 15.51 mm |
Length / Width Ratio : | 1.00 |
Approx Face-up Area : | 216.58 mm² |
Approx Volume : | 1,069.96 mm³ |
How many Colors Available for Ruby ?
Light Red , Red , Dark Red ,
Ruby is a red to pink variety of the mineral Corundum. Its name comes from the Latin word "ruber", which simply means "red". Most Rubies on the market are heat-treated to enhance their color and clarity.
Name of Stone : | Ruby |
Mineral : | Corundum |
Shape : | Cushion |
Chemical Formula : | Al2O3 |
Crystal Structure : | Hexagonal |
Hardness : | 9 |
Specific Gravity : | 4 |
Carat weight : | 21.40 carat |
Gram weight : | 4.280 gm |
Ounces weight : | 0.1510 ounces |
Length : | 15.51 mm |
Width : | 15.51 mm |
Length / Width Ratio : | 1.00 |
Average diameter : | 15.51 mm |
Approx Face-up Area : | 216.58 mm² |
Approx Volume : | 1,069.96 mm³ |
Refractive Index : | 1.76 - 1.77 |
Cleavage : | None |
Luster : | Vitreous to adamantine |
Birefringence : | 0.0008 |
Wearability : | Excellent |
Birthstone : | Ruby is a birthstone for the month of July |
Before purchasing a diamond, one should make sure it looks its weight. It's important to understand that carat weight does not equal face-up size.
Two diamonds of exactly the same weight (and shape) can vary quite considerably in face-up size. This depends on the proportions of the cut (e.g., deep cuts will face up smaller)..
Face-up area is a measure of the size of the diamond when viewed from the top view.
It tells you how big the diamond is at the girdle plane. It's important for a diamond to have sufficient face-up size for its carat weight
Diamond prices vary greatly as they depend on the combination of unique characteristics (4Cs - Cut, Color, Clarity, and Carat). For best value, it's important to choose the combination that will reduce the price without having a negative impact on appearance.
You also need to consider some of the following points as well
- Strong blue fluorescence.
- Fair or Poor symmetry.
- Extremely thin or extremely thick girdle.
- Inclusions visible to the naked eye.
- Diamond Certification.
Blue fluorescence can have a positive, negative, or zero effect on a diamond. Diamonds in the lower color range (H or lower) can benefit from it, as it can make them look whiter, more colorless. On the other hand, strong fluorescence can cause a stone (especially in the higher color range D-G) to appear hazy or milky under certain light conditions. One of the biggest benefits of fluorescent diamonds is that they generally cost less.
Blue fluorescence can be found in 35% of naturally mined diamonds and it makes the stone glow under UV light. Outside of UV lighting environments, there are no visual differences between fluorescent and non-fluorescent diamonds.
However, there exists a big difference in pricing between these diamonds. In the industry, diamonds with fluorescence are usually traded at a 10-15% discount and can go as high as 25% for higher colored diamonds.
GIA grades fluorescence as None, Faint, Medium, Strong, and Very Strong.
There are Many Laboratory Available which provides certification for Gemstones.
- GIA - Gemological Institute of America
- AGS - American Gemological Society
- HRD - The Hoge Raad voor Diamant
- IGI - International Gemological Institute
- EGL - European Gemological Laboratories
- GSI - Gemological Science International
*Different certification labs give different results
Piecut Diamonds are set of small Diamonds, which are cut & polished with Precised Measurements to look like a Single Solitaire diamond which can save 80% to 85% from Solitaire Single Piece Price.
Shapes of Pie Cut Diamonds.
- 9 Pcs Emerald
- 9 Pcs Round
- 4 Pcs Round
- 3 Pcs Heart
- 4 Pcs Oval
- 4 Pcs Pear
- 4 Pcs Marquise
- 5 Pcs Star
Click here for More Information
4.60 ct - Cushion - Ruby
4.40 ct - Cushion - Ruby
6.10 ct - Cushion - Ruby
15.50 ct - Cushion - Ruby
19.40 ct - Cushion - Ruby
13.10 ct - Cushion - Ruby
20.10 ct - Cushion - Ruby
23.50 ct - Cushion - Ruby
23.90 ct - Cushion - Ruby
37.10 ct - Cushion - Ruby
31.80 ct - Cushion - Ruby
37.70 ct - Cushion - Ruby
4.40 ct - Cushion - Ruby
6.10 ct - Cushion - Ruby
15.50 ct - Cushion - Ruby
19.40 ct - Cushion - Ruby
13.10 ct - Cushion - Ruby
20.10 ct - Cushion - Ruby
23.50 ct - Cushion - Ruby
23.90 ct - Cushion - Ruby
37.10 ct - Cushion - Ruby
31.80 ct - Cushion - Ruby
37.70 ct - Cushion - Ruby
5.40 ct - Hiddenite - Trillion
8.70 ct - Amethyst - Marquise
8.10 ct - Kunzite - Emerald
2.20 ct - Morganite - Princess
4.40 ct - Quartz - Oval
5.80 ct - Fluorite - Cushion
15.30 ct - Diopside - Baguette
12.00 ct - Tanzanite - Pear
15.90 ct - Morganite - Cushion
17.20 ct - Amethyst - Pear
14.10 ct - Quartz - Emerald
14.40 ct - Spinel - Trillion
20.10 ct - Andesine - Cushion
23.60 ct - Andesine - Emerald
27.30 ct - Peridot - Princess
29.80 ct - Sapphire - Round
22.20 ct - Peridot - Cushion
29.50 ct - Chrysoberyl - Emerald
33.80 ct - Kunzite - Baguette
39.60 ct - Beryl - Trillion
38.80 ct - Emerald - Oval
38.60 ct - Diamond - Pear
32.60 ct - Alexandrite - Round
39.20 ct - Benitoite - Trillion
V S
8.70 ct - Amethyst - Marquise
8.10 ct - Kunzite - Emerald
V S
2.20 ct - Morganite - Princess
4.40 ct - Quartz - Oval
V S
5.80 ct - Fluorite - Cushion
15.30 ct - Diopside - Baguette
V S
12.00 ct - Tanzanite - Pear
15.90 ct - Morganite - Cushion
V S
17.20 ct - Amethyst - Pear
14.10 ct - Quartz - Emerald
V S
14.40 ct - Spinel - Trillion
20.10 ct - Andesine - Cushion
V S
23.60 ct - Andesine - Emerald
27.30 ct - Peridot - Princess
V S
29.80 ct - Sapphire - Round
22.20 ct - Peridot - Cushion
V S
29.50 ct - Chrysoberyl - Emerald
33.80 ct - Kunzite - Baguette
V S
39.60 ct - Beryl - Trillion
38.80 ct - Emerald - Oval
V S
38.60 ct - Diamond - Pear
32.60 ct - Alexandrite - Round
V S
39.20 ct - Benitoite - Trillion
6.10 ct - Cushion- Diamond
3.30 ct - Oval- Diamond
8.70 ct - Cushion- Diamond
6.40 ct - Pear- Diamond
9.30 ct - Oval- Diamond
4.40 ct - Pear- Diamond
16.30 ct - Princess- Diamond
18.20 ct - Marquise- Diamond
20.00 ct - Pear- Diamond
19.90 ct - Cushion- Diamond
14.10 ct - Marquise- Diamond
15.30 ct - Oval- Diamond
20.70 ct - Princess- Diamond
22.20 ct - Princess- Diamond
24.50 ct - Trillion- Diamond
21.80 ct - Marquise- Diamond
22.10 ct - Trillion- Diamond
23.40 ct - Princess- Diamond
30.90 ct - Oval- Diamond
30.20 ct - Emerald- Diamond
32.80 ct - Princess- Diamond
38.10 ct - Round- Diamond
36.90 ct - Oval- Diamond
31.80 ct - Cushion- Diamond
V S
3.30 ct - Oval- Diamond
8.70 ct - Cushion- Diamond
V S
6.40 ct - Pear- Diamond
9.30 ct - Oval- Diamond
V S
4.40 ct - Pear- Diamond
16.30 ct - Princess- Diamond
V S
18.20 ct - Marquise- Diamond
20.00 ct - Pear- Diamond
V S
19.90 ct - Cushion- Diamond
14.10 ct - Marquise- Diamond
V S
15.30 ct - Oval- Diamond
20.70 ct - Princess- Diamond
V S
22.20 ct - Princess- Diamond
24.50 ct - Trillion- Diamond
V S
21.80 ct - Marquise- Diamond
22.10 ct - Trillion- Diamond
V S
23.40 ct - Princess- Diamond
30.90 ct - Oval- Diamond
V S
30.20 ct - Emerald- Diamond
32.80 ct - Princess- Diamond
V S
38.10 ct - Round- Diamond
36.90 ct - Oval- Diamond
V S
31.80 ct - Cushion- Diamond