Topaz (28.40 Carat )
24.07 x 16.05 mm
Stone Type : | Topaz |
Stone Shape : | Oval |
Stone Weight : | 28.40 carat |
Length X Width : | 24.07 x 16.05 mm |
Length / Width Ratio : | 1.50 |
Approx Face-up Area : | 316.81 mm² |
Approx Volume : | 1,609.09 mm³ |
How many Colors Available for Topaz ?
White , Light Red , Red , Dark Red , Orangey Red , Light Orange , Orange , Light Brown , Brown , Dark Brown , Light Yellow , Yellow , Light Yellowish Green , Yellowish Green , Dark Yellowish Green , Light Green , Green , Dark Green , Light Bluish Green , Bluish Green , Dark Bluish Green , Light Blue , Blue , Dark Blue , Light Violet , Violet , Dark Violet , Light Purple , Purple , Dark Purple , Light Grey , Grey ,
Topaz is a gemstone of many colors. It’s commonly found colorless (white) and then treated to achieve desired colors. Blue Topaz is the most common and popular color variety.
Name of Stone : | Topaz |
Mineral : | Topaz |
Shape : | Oval |
Chemical Formula : | Al2SiO4(F,OH)2 |
Crystal Structure : | Orthorhombic |
Hardness : | 8 |
Specific Gravity : | 3.53 |
Carat weight : | 28.40 carat |
Gram weight : | 5.680 gm |
Ounces weight : | 0.2004 ounces |
Length : | 24.07 mm |
Width : | 16.05 mm |
Length / Width Ratio : | 1.50 |
Average diameter : | 20.06 mm |
Approx Face-up Area : | 316.81 mm² |
Approx Volume : | 1,609.09 mm³ |
Refractive Index : | 1.610 - 1.638 |
Cleavage : | 1,3 - basal |
Luster : | Vitreous |
Birefringence : | 0.014 |
Wearability : | Very good |
Birthstone : | Topaz is a birthstone for the month of December |
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
7.10 ct - Aquamarine - Cushion
5.50 ct - Diamond - Baguette
2.30 ct - Morganite - Pear
4.40 ct - Alexandrite - Marquise
4.00 ct - Fluorite - Pear
7.70 ct - Ruby - Oval
17.10 ct - Kunzite - Marquise
16.80 ct - Andesine - Cushion
13.50 ct - Ruby - Pear
19.10 ct - Emerald - Trillion
15.10 ct - Kyanite - Round
15.00 ct - Amethyst - Trillion
28.10 ct - Morganite - Princess
21.40 ct - Citrine - Pear
22.90 ct - Hiddenite - Round
21.80 ct - Hiddenite - Trillion
23.10 ct - Sapphire - Oval
23.90 ct - Sapphire - Baguette
33.50 ct - Diopside - Pear
39.10 ct - Ruby - Pear
37.40 ct - Quartz - Baguette
38.00 ct - Morganite - Marquise
38.10 ct - Ruby - Trillion
32.80 ct - Citrine - Round
V S
5.50 ct - Diamond - Baguette
2.30 ct - Morganite - Pear
V S
4.40 ct - Alexandrite - Marquise
4.00 ct - Fluorite - Pear
V S
7.70 ct - Ruby - Oval
17.10 ct - Kunzite - Marquise
V S
16.80 ct - Andesine - Cushion
13.50 ct - Ruby - Pear
V S
19.10 ct - Emerald - Trillion
15.10 ct - Kyanite - Round
V S
15.00 ct - Amethyst - Trillion
28.10 ct - Morganite - Princess
V S
21.40 ct - Citrine - Pear
22.90 ct - Hiddenite - Round
V S
21.80 ct - Hiddenite - Trillion
23.10 ct - Sapphire - Oval
V S
23.90 ct - Sapphire - Baguette
33.50 ct - Diopside - Pear
V S
39.10 ct - Ruby - Pear
37.40 ct - Quartz - Baguette
V S
38.00 ct - Morganite - Marquise
38.10 ct - Ruby - Trillion
V S
32.80 ct - Citrine - Round
8.50 ct - Marquise- Diamond
8.70 ct - Princess- Diamond
7.50 ct - Emerald- Diamond
6.70 ct - Baguette- Diamond
7.70 ct - Trillion- Diamond
4.60 ct - Marquise- Diamond
13.10 ct - Princess- Diamond
16.10 ct - Pear- Diamond
17.50 ct - Marquise- Diamond
10.70 ct - Princess- Diamond
16.80 ct - Cushion- Diamond
15.40 ct - Trillion- Diamond
27.60 ct - Trillion- Diamond
20.50 ct - Emerald- Diamond
25.70 ct - Pear- Diamond
24.50 ct - Pear- Diamond
26.70 ct - Princess- Diamond
26.40 ct - Emerald- Diamond
35.30 ct - Princess- Diamond
34.20 ct - Princess- Diamond
37.10 ct - Pear- Diamond
36.30 ct - Cushion- Diamond
35.50 ct - Oval- Diamond
30.30 ct - Baguette- Diamond
V S
8.70 ct - Princess- Diamond
7.50 ct - Emerald- Diamond
V S
6.70 ct - Baguette- Diamond
7.70 ct - Trillion- Diamond
V S
4.60 ct - Marquise- Diamond
13.10 ct - Princess- Diamond
V S
16.10 ct - Pear- Diamond
17.50 ct - Marquise- Diamond
V S
10.70 ct - Princess- Diamond
16.80 ct - Cushion- Diamond
V S
15.40 ct - Trillion- Diamond
27.60 ct - Trillion- Diamond
V S
20.50 ct - Emerald- Diamond
25.70 ct - Pear- Diamond
V S
24.50 ct - Pear- Diamond
26.70 ct - Princess- Diamond
V S
26.40 ct - Emerald- Diamond
35.30 ct - Princess- Diamond
V S
34.20 ct - Princess- Diamond
37.10 ct - Pear- Diamond
V S
36.30 ct - Cushion- Diamond
35.50 ct - Oval- Diamond
V S
30.30 ct - Baguette- Diamond