Blue Star Sapphire Gemstones
Shop natural blue star sapphire gemstones with unique star effects and rich blue color.
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Bi-color
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Black
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Blue Blue Star Sapphires
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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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Single |
Pairs |
Lots |
Faceted |
Cabochons |
1.68ct Deep Blue Star Sapphire, Oval, Opaque
7.2 x 5.4 mm
$ 46.37
3.10ctw Navy Blue Star Sapphire, Oval, Opaque
7 x 5.3 mm
$ 85.56
3.27ctw Deep Blue Star Sapphire, Oval, Opaque
7.3 x 5.4 mm
$ 90.25
4.54ctw Deep Navy Blue Star Sapphire, Oval, Opaque
7 x 5 mm (calibrated)
$ 107.87
3.28ctw Dark Blue Star Sapphire, Oval, Opaque
7.3 x 5.3 mm
$ 75.44
4.03ctw Dark Blue Star Sapphire, Oval, Opaque
7 x 5 mm (calibrated)
$ 96.72
2.89ctw Dark Blue Star Sapphire, Oval, Opaque
7 x 5 mm (calibrated)
$ 76.30
4.61ctw Deep Blue Star Sapphire, Oval, Opaque
7.1 x 5.2 mm
$ 121.70
3.86ctw Deep Blue Star Sapphire, Oval, Opaque
7 x 5 mm (calibrated)
$ 91.72
5.48ctw Deep Navy Blue Star Sapphire, Oval, Opaque
7 x 5 mm (calibrated)
$ 144.67
2.51ct Deep Blue Star Sapphire, Round, Opaque
7.5 mm (calibrated)
$ 66.26
4.34ctw Deep Navy Blue Star Sapphire, Oval, Opaque
7 x 5 mm (calibrated)
$ 114.58
4.68ctw Twilight Blue Star Sapphire, Oval, Opaque
7.1 x 5.3 mm
$ 123.55
5.11ctw Dark Blue Star Sapphire, Oval, Opaque
7 x 5 mm (calibrated)
$ 134.90
2.59ct Navy Blue Star Sapphire, Round, Opaque
7 mm (calibrated)
$ 64.96
4.08ctw Dark Blue Star Sapphire, Oval, Opaque
7 x 5 mm (calibrated)
$ 96.94
4.58ctw Deep Blue Star Sapphire, Oval, Opaque
7 x 5 mm (calibrated)
$ 108.82
4.08ctw Deep Blue Star Sapphire, Oval, Opaque
7 x 5 mm (calibrated)
$ 96.94
3.45ctw Deep Blue Star Sapphire, Oval, Opaque
7 x 5 mm (calibrated)
$ 81.97
4.88ctw Navy Blue Star Sapphire, Round, Opaque
7 mm (calibrated)
$ 122.39
3.73ctw Deep Blue Star Sapphire, Oval, Opaque
7 x 5 mm (calibrated)
$ 80.57
4.90ctw Dark Blue Star Sapphire, Oval, Opaque
7 x 5 mm (calibrated)
$ 116.42
6.34ctw Deep Blue Star Sapphire, Oval, Opaque
7 x 5 mm (calibrated)
$ 167.38
2.89ct Dark Blue Star Sapphire, Oval, Opaque
9 x 7 mm (calibrated)
$ 79.76
Why Buy Blue Star Sapphires from GemSelect?
- Trusted Worldwide Since 2003
- Supplying natural gemstones to jewelers and collectors in 120+ countries
- Verified natural gemstones
- View All GemSelect Reviews on Bizrate
- Secure checkout and insured worldwide delivery
- 30-day returns and satisfaction guarantee
Natural Blue Star Sapphire
Our blue star sapphire gemstones are 100% natural and selected for their distinctive star effect, known as asterism. These rare gems display a visible star pattern under direct light, making them highly desirable for collectors and unique jewelry pieces.
Shop Star Sapphire Gemstones Online
Browse a wide range of blue star sapphire gemstones at GemSelect. Choose from different sizes, shapes, and clarity levels, all with detailed images and secure worldwide delivery.
Asterism in Star Sapphires
The star effect in blue star sapphire is caused by fine rutile inclusions that reflect light in a six-ray pattern. Strong, centered stars with sharp rays are considered the most valuable.
Star Sapphire Cabochons
Blue star sapphires are typically cut as cabochons to enhance the visibility of the star. These smooth, domed stones are ideal for rings, pendants, and statement jewelry designs.
Loose Blue Star Sapphire for Jewelry
Loose star sapphires offer flexibility for custom jewelry. Their durability and unique optical effect make them excellent choices for rings, bracelets, and collector pieces.
Color and Quality Factors
The finest blue star sapphire gemstones feature deep blue color, a well-defined star, and good translucency. Balance between color and star visibility is key when selecting a high-quality stone.
Wholesale Star Sapphire Stones
We offer competitive pricing on loose blue star sapphire gemstones for jewelers and collectors. Bulk options are available with consistent quality and full disclosure of any treatments.
Learn more about sapphire varieties, properties, and care on our Sapphire Information Page.
FAQs
What is a blue star sapphire?
A blue star sapphire is a variety of sapphire that displays a star-shaped light effect called asterism, visible when viewed under direct light.
What causes the star effect in star sapphires?
The star effect is caused by needle-like rutile inclusions inside the gemstone, which reflect light in a six-ray pattern.
Are blue star sapphires natural?
Yes, natural star sapphires occur in nature. At GemSelect, all treatments, if any, are fully disclosed for transparency.
Why are star sapphires cut as cabochons?
Cabochon cutting enhances the visibility of the star effect, allowing the light to reflect properly and display the asterism clearly.
How do I evaluate a blue star sapphire?
Look for a sharp, centered star, attractive blue color, and good translucency. The star should be visible and move smoothly across the surface.
Are blue star sapphires suitable for everyday jewelry?
Yes, with a Mohs hardness of 9, star sapphires are durable and suitable for daily wear, especially in protective settings.
Can I buy star sapphire gemstones in bulk?
Yes, GemSelect offers wholesale star sapphire options for jewelers and collectors with competitive pricing.
GemSelect Certified Store Reviews
GemSelect: Over 22 Years in the Gemstone Business! Thank you for trusting us with your purchase!
Overall Rating -> 10 
this site is awesome. I was able to look at the products think about purchasing and come back and find the same products. With the amount of inventory gem select has. Its awesome to be able to filter the way that they allow you too.
Overall Rating -> 9 
It was a good experience looking for and finding a nice amethyst stone
Overall Rating -> 8 
First time using this website. It was both exciting finding things in my price range and things Iam gonna save up for and use in other pieces. I love that the picture of the gem is the exact gem I'll be buying. I haven't tested the gems yes but they said they sold me 100% natural gems.
Overall Rating -> 10
I am never let down by GemSelect. I love that you get the exact stone you want. Shipping is always in a few days. I have spread the word about GemSelect on social media jewelry creating groups that I attend. This sapphire is going to make one gorgeous ring
Overall Rating -> 9
Nothing bad to report. Everything is as expected. The gems and the price are all very good.
Overall Rating -> 10
Great selection. Maybe too great i kept adding and deleting stuff because i found better looking ones
