Black Star Sapphire Gemstones
Explore natural black star sapphire gemstones with striking star effects and rich dark tones.
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Bi-color
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Black Black Star Sapphire
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Blue
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Brown
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Golden
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Gray
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Green
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Multicolor
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Orange
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Pink
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Purple
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Red
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Turquoise
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Violet
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White
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Yellow
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Single |
Pairs |
Lots |
Faceted |
Cabochons |
5.01Ct Black Star Sapphire, Oval, Opaque
10 x 8 mm (calibrated)
$ 108.22
5.97Ct Black Star Sapphire, Oval, Opaque
11 x 9 mm (calibrated)
$ 143.28
3.70Ct Black Star Sapphire, Oval, Opaque
10.4 x 8.3 mm
$ 79.92
5.70Ct Black Star Sapphire, Oval, Opaque
11 x 9 mm (calibrated)
$ 123.12
4.82Ct Black Star Sapphire, Oval, Opaque
11.6 x 8.8 mm
$ 115.68
3.97Ct Black Star Sapphire, Oval, Opaque
10 x 8 mm (calibrated)
$ 71.46
2.95Ct Black Star Sapphire, Oval, Opaque
10 x 8 mm (calibrated)
$ 63.72
15.48Ct Black Star Sapphire, Oval, Opaque
13.9 x 13.4 mm
$ 241.49
5.13Ct Black Star Sapphire, Oval, Opaque
10.6 x 8.1 mm
$ 110.81
3.42Ct Black Star Sapphire, Oval, Opaque
10.1 x 7.5 mm
$ 73.87
7.81Ct Black Star Sapphire, Oval, Opaque
12 x 10 mm (calibrated)
$ 187.44
4.91Ct Black Star Sapphire, Oval, Opaque
9.8 x 7.5 mm
$ 106.06
4.30Ct Black Star Sapphire, Oval, Opaque
10 x 7 mm (calibrated)
$ 92.88
7.80Ct Black Star Sapphire, Oval, Opaque
12 x 10 mm (calibrated)
$ 187.20
5.51Ct Black Star Sapphire, Oval, Opaque
11.1 x 8.6 mm
$ 119.02
4.08Ct Black Star Sapphire, Oval, Opaque
10 x 8 mm (calibrated)
$ 73.44
7.59Ct Black Star Sapphire, Oval, Opaque
11.8 x 9.2 mm
$ 182.16
7.64Ct Black Star Sapphire, Oval, Opaque
12 x 10 mm (calibrated)
$ 183.36
34.34Ct Black Star Sapphire, Oval, Opaque
20.2 x 16.8 mm
$ 535.70
6.67Ct Black Star Sapphire, Oval, Opaque
11 x 9 mm (calibrated)
$ 160.08
4.54Ct Black Star Sapphire, Pear Shape, Opaque
10.8 x 8.3 mm
$ 98.06
3.44Ct Black Star Sapphire, Oval, Opaque
11 x 9 mm (calibrated)
$ 74.30
8.75Ct Black Star Sapphire, Oval, Opaque
12 x 10 mm (calibrated)
$ 210.00
6.82Ct Black Star Sapphire, Oval, Opaque
12 x 10 mm (calibrated)
$ 163.68
Why Buy Black Star Sapphire from GemSelect?
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Natural Black Star Sapphire
Our natural black star sapphire gemstones display a unique optical phenomenon known as asterism, forming a distinct star across the surface when viewed under light. These gemstones are carefully selected for their strong star visibility and deep, rich color.
Black Star Sapphire Gemstones Online
Buy black star sapphire gemstones online at GemSelect with confidence. We offer a wide range of loose stones, detailed product information, and secure worldwide shipping for a smooth shopping experience.
Star Sapphire Cabochons
Black star sapphires are typically cut as cabochons to enhance the star effect. The smooth, domed surface allows the star to appear clearly, making these stones ideal for statement rings and pendants.
Strong Asterism and Quality Factors
The value of a black star sapphire depends on the sharpness and centering of the star, body color, and overall clarity. Stones with a well-defined, symmetrical star and good contrast are especially desirable.
Black Star Sapphire for Jewelry
Black star sapphire gemstones are durable and suitable for everyday jewelry. With a Mohs hardness of 9, they are perfect for rings, cufflinks, pendants, and other custom designs requiring both beauty and strength.
Loose Star Sapphires for Collectors
Collectors appreciate black star sapphire gemstones for their rarity and natural optical effects. Each stone is unique, making them excellent additions to any gemstone collection.
Wholesale Black Star Sapphire
We offer competitive pricing on loose black star sapphire gemstones for bulk buyers, jewelers, and designers looking for consistent quality and reliable supply.
September Birthstone Sapphire
Sapphire is the birthstone for September and is associated with wisdom and protection. Black star sapphires provide a distinctive alternative to traditional blue sapphires.
Learn more about star sapphires, their formation, and properties on our Star Sapphire Information Page.
FAQs
What is a black star sapphire?
A black star sapphire is a variety of sapphire that shows a star-shaped light effect (asterism) caused by inclusions within the stone. The star becomes visible under direct light.
Are black star sapphire gemstones natural?
Yes, all black star sapphire gemstones at GemSelect are natural. Any treatments, if present, are clearly disclosed for full transparency.
Why are star sapphires cut as cabochons?
Cabochon cutting enhances the visibility of the star effect. Faceting would disrupt the asterism, so a smooth dome is preferred.
Is black star sapphire suitable for daily wear?
Yes, with a hardness of 9 on the Mohs scale, black star sapphire is durable enough for everyday jewelry such as rings and pendants.
What determines the quality of a black star sapphire?
Quality is based on the sharpness and symmetry of the star, body color, transparency, and overall appearance. A centered, well-defined star is most valuable.
Can I buy black star sapphire in calibrated sizes?
Yes, we offer a selection of calibrated black star sapphire gemstones suitable for standard jewelry settings, along with unique free-size stones.
GemSelect Certified Store Reviews
GemSelect: Over 22 Years in the Gemstone Business! Thank you for trusting us with your purchase!
Overall Rating -> 10 
I have been very happy with my prior purchases and enjoy the website experience.
Overall Rating -> 10
Easy to conduct search, good amount of stock to select from along with variety of prices.
Overall Rating -> 10
GemSelect offers excellent choices, prices & service- highly recommended! Unfortunately, prior to ordering a replacement gemstone, my jeweler neglected to mention it needed to be one that was a'cushion cuta' to fit the existing mount. Have yet to return/exchangea'
Overall Rating -> 9 
the gems were smaller than I thought but I was at fault for not reading the complete discrimination
Overall Rating -> 10
I love the products. I've bought them as gifts and people love my gifts
Overall Rating -> 9
Been using them for years! Very satisfied with the products.
