Apatite (18.90 Carat )
17.15 x 17.15 mm
Stone Type : | Apatite |
Stone Shape : | Round |
Stone Weight : | 18.90 carat |
Length X Width : | 17.15 x 17.15 mm |
Length / Width Ratio : | 1.00 |
Approx Face-up Area : | 231.00 mm² |
Approx Volume : | 1,181.20 mm³ |
How many Colors Available for Apatite ?
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 ,
Apatite can appear in wide variety of colors, which is why it’s often mistaken for other gems. This characteristic actually gave it the name - from the Greek word apatao, which means "to deceive".
Name of Stone : | Apatite |
Mineral : | Apatite |
Shape : | Round |
Chemical Formula : | Ca5(PO4)3(F,OH,Cl) |
Crystal Structure : | Hexagonal |
Hardness : | 5 |
Specific Gravity : | 3.2 |
Carat weight : | 18.90 carat |
Gram weight : | 3.780 gm |
Ounces weight : | 0.1333 ounces |
Length : | 17.15 mm |
Width : | 17.15 mm |
Length / Width Ratio : | 1.00 |
Average diameter : | 17.15 mm |
Approx Face-up Area : | 231.00 mm² |
Approx Volume : | 1,181.20 mm³ |
Refractive Index : | 1.628 - 1.651 |
Cleavage : | Indistinct |
Luster : | Vitreous |
Birefringence : | 0.002 - 0.008 |
Wearability : | Good |
Birthstone : | Apatite 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
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V S
1.60 ct - Tanzanite - Trillion
4.40 ct - Alexandrite - Round
V S
6.80 ct - Emerald - Cushion
7.20 ct - Alexandrite - Round
V S
6.10 ct - Andesine - Emerald
10.60 ct - Diaspore - Oval
V S
14.40 ct - Alexandrite - Cushion
19.40 ct - Quartz - Marquise
V S
19.50 ct - Emerald - Princess
18.60 ct - Beryl - Princess
V S
12.30 ct - Hiddenite - Trillion
26.40 ct - Aquamarine - Round
V S
25.00 ct - Alexandrite - Emerald
30.00 ct - Sinhalite - Pear
V S
22.90 ct - Ruby - Princess
28.40 ct - Alexandrite - Marquise
V S
28.90 ct - Andesine - Round
30.30 ct - Kyanite - Emerald
V S
33.30 ct - Beryl - Emerald
33.30 ct - Kunzite - Pear
V S
38.40 ct - Apatite - Oval
39.80 ct - Emerald - Pear
V S
37.70 ct - Andesine - Trillion
2.10 ct - Princess- Diamond
0.90 ct - Cushion- Diamond
3.60 ct - Trillion- Diamond
9.00 ct - Emerald- Diamond
5.70 ct - Oval- Diamond
7.20 ct - Cushion- Diamond
12.90 ct - Cushion- Diamond
14.00 ct - Princess- Diamond
15.20 ct - Oval- Diamond
10.50 ct - Trillion- Diamond
11.80 ct - Marquise- Diamond
15.70 ct - Cushion- Diamond
27.60 ct - Round- Diamond
24.60 ct - Cushion- Diamond
23.50 ct - Baguette- Diamond
21.00 ct - Baguette- Diamond
22.10 ct - Trillion- Diamond
28.20 ct - Trillion- Diamond
37.70 ct - Round- Diamond
38.00 ct - Marquise- Diamond
35.30 ct - Cushion- Diamond
38.90 ct - Round- Diamond
34.20 ct - Pear- Diamond
31.90 ct - Emerald- Diamond
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V S
9.00 ct - Emerald- Diamond
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7.20 ct - Cushion- Diamond
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15.20 ct - Oval- Diamond
V S
10.50 ct - Trillion- Diamond
11.80 ct - Marquise- Diamond
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15.70 ct - Cushion- Diamond
27.60 ct - Round- Diamond
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23.50 ct - Baguette- Diamond
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22.10 ct - Trillion- Diamond
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37.70 ct - Round- Diamond
V S
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35.30 ct - Cushion- Diamond
V S
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34.20 ct - Pear- Diamond
V S
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