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 |
4.69ct Black Star Sapphire, Pear Shape, Opaque
11 x 9 mm (calibrated)
$ 84.08
2.74ct Black Star Sapphire, Oval, Opaque
8.2 x 6.8 mm
$ 190.34
4.70ct Black Star Sapphire, Oval, Opaque
10.5 x 8.4 mm
$ 84.26
3.89ct Black Star Sapphire, Oval, Opaque
10.9 x 8.6 mm
$ 77.49
5.76ct Black Star Sapphire, Oval, Opaque
10.4 x 9 mm
$ 86.05
7.18ct Black Star Sapphire, Oval, Opaque
11.7 x 9.2 mm
$ 143.03
7.59ct Black Star Sapphire, Oval, Opaque
11.8 x 9.2 mm
$ 151.19
8.65ct Black Star Sapphire, Oval, Opaque
12.4 x 10.5 mm
$ 172.31
5.20ct Black Star Sapphire, Oval, Opaque
10 x 8 mm (calibrated)
$ 93.23
41.19ct Black Star Sapphire, Oval, Opaque
20.2 x 18.1 mm
$ 533.32
3.76ct Black Star Sapphire, Oval, Opaque
10 x 8 mm (calibrated)
$ 56.17
3.95ct Black Star Sapphire, Oval, Opaque
10 x 8 mm (calibrated)
$ 70.82
6.28ct Black Star Sapphire, Oval, Opaque
10.5 x 8.6 mm
$ 112.59
3.95ct Black Star Sapphire, Pear Shape, Opaque
10 x 8.4 mm
$ 70.82
4.30ct Black Star Sapphire, Oval, Opaque
10 x 7 mm (calibrated)
$ 77.09
5.81ct Black Star Sapphire, Oval, Opaque
10.4 x 8.2 mm
$ 104.17
5.70ct Black Star Sapphire, Oval, Opaque
11 x 9 mm (calibrated)
$ 102.19
7.80ct Black Star Sapphire, Oval, Opaque
12 x 10 mm (calibrated)
$ 155.38
8.75ct Black Star Sapphire, Oval, Opaque
12 x 10 mm (calibrated)
$ 174.30
4.49ct Black Star Sapphire, Oval, Opaque
10.8 x 8.2 mm
$ 80.49
5.97ct Black Star Sapphire, Oval, Opaque
11 x 9 mm (calibrated)
$ 118.92
3.19ct Black Star Sapphire, Oval, Opaque
9.6 x 7.3 mm
$ 57.19
5.59ct Black Star Sapphire, Oval, Opaque
11.2 x 8.5 mm
$ 111.35
4.38ct Black Star Sapphire, Oval, Opaque
10 x 8 mm (calibrated)
$ 73.15
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 love the product and the details about each of them.
Overall Rating -> 8 
It was a good interaction I got a good gemstone for cheap
Overall Rating -> 10
hassle free experience.
Overall Rating -> 9 
They have literally everything on this website! The prices are also pretty good, I was able to find plenty of nice stones that I could afford!
Overall Rating -> 10
It was all good
Overall Rating -> 10
I could see the actual gem I was buying
