Benitoite (18.00 Carat )
26.70 x 13.35 mm
Stone Type : | Benitoite |
Stone Shape : | Marquise |
Stone Weight : | 18.00 carat |
Length X Width : | 26.70 x 13.35 mm |
Length / Width Ratio : | 2.00 |
Approx Face-up Area : | 252.99 mm² |
Approx Volume : | 986.19 mm³ |
How many Colors Available for Benitoite ?
White , Light Blue , Blue , Dark Blue ,
Benitoite is a very rare blue gem first discovered in San Benito, California (hence the name). Benitoite is California state’s official gem.
Name of Stone : | Benitoite |
Mineral : | Benitoite |
Shape : | Marquise |
Chemical Formula : | BaTiSi3O9 |
Crystal Structure : | Hexagonal |
Hardness : | 6 - 6.5 |
Specific Gravity : | 3.65 |
Carat weight : | 18.00 carat |
Gram weight : | 3.600 gm |
Ounces weight : | 0.1270 ounces |
Length : | 26.70 mm |
Width : | 13.35 mm |
Length / Width Ratio : | 2.00 |
Average diameter : | 20.02 mm |
Approx Face-up Area : | 252.99 mm² |
Approx Volume : | 986.19 mm³ |
Refractive Index : | 1.75-1.80 |
Cleavage : | None |
Luster : | Vitreous |
Birefringence : | 0.047 |
Wearability : | N / A |
Birthstone : | Benitoite is not an official birthstone for any month |
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
3.40 ct - Marquise - Benitoite
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22.20 ct - Marquise - Benitoite
27.80 ct - Marquise - Benitoite
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14.20 ct - Benitoite - Cushion
14.00 ct - Spinel - Marquise
13.70 ct - Benitoite - Princess
16.80 ct - Andesine - Princess
17.10 ct - Aquamarine - Round
17.80 ct - Sapphire - Trillion
23.60 ct - Sapphire - Princess
27.90 ct - Diopside - Pear
29.20 ct - Ruby - Round
21.60 ct - Fluorite - Trillion
27.60 ct - Diopside - Round
20.00 ct - Benitoite - Oval
37.20 ct - Apatite - Oval
35.20 ct - Andesine - Cushion
34.70 ct - Diopside - Oval
34.30 ct - Sapphire - Marquise
36.10 ct - Ruby - Oval
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V S
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4.10 ct - Spinel - Trillion
V S
8.90 ct - Kunzite - Trillion
9.10 ct - Ruby - Oval
V S
4.60 ct - Quartz - Marquise
14.20 ct - Benitoite - Cushion
V S
14.00 ct - Spinel - Marquise
13.70 ct - Benitoite - Princess
V S
16.80 ct - Andesine - Princess
17.10 ct - Aquamarine - Round
V S
17.80 ct - Sapphire - Trillion
23.60 ct - Sapphire - Princess
V S
27.90 ct - Diopside - Pear
29.20 ct - Ruby - Round
V S
21.60 ct - Fluorite - Trillion
27.60 ct - Diopside - Round
V S
20.00 ct - Benitoite - Oval
37.20 ct - Apatite - Oval
V S
35.20 ct - Andesine - Cushion
34.70 ct - Diopside - Oval
V S
34.30 ct - Sapphire - Marquise
36.10 ct - Ruby - Oval
V S
33.50 ct - Apatite - Baguette
2.00 ct - Princess- Diamond
7.90 ct - Round- Diamond
1.20 ct - Marquise- Diamond
7.20 ct - Round- Diamond
6.80 ct - Marquise- Diamond
8.30 ct - Cushion- Diamond
17.10 ct - Pear- Diamond
12.10 ct - Baguette- Diamond
15.30 ct - Round- Diamond
15.60 ct - Pear- Diamond
12.00 ct - Round- Diamond
11.80 ct - Pear- Diamond
21.20 ct - Round- Diamond
28.00 ct - Marquise- Diamond
24.00 ct - Baguette- Diamond
24.70 ct - Marquise- Diamond
27.80 ct - Cushion- Diamond
29.00 ct - Oval- Diamond
32.60 ct - Princess- Diamond
38.20 ct - Cushion- Diamond
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35.30 ct - Oval- Diamond
36.20 ct - Round- Diamond
38.50 ct - Cushion- Diamond
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8.30 ct - Cushion- Diamond
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15.30 ct - Round- Diamond
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21.20 ct - Round- Diamond
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28.00 ct - Marquise- Diamond
24.00 ct - Baguette- Diamond
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29.00 ct - Oval- Diamond
32.60 ct - Princess- Diamond
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38.20 ct - Cushion- Diamond
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