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Blue Star Sapphire Gemstones

Shop natural blue star sapphire gemstones with unique star effects and rich blue color.

Blue Star Sapphires Weight
Blue Star Sapphires Size
Blue Star Sapphires Clarity
Blue Star Sapphires Price

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1.39ct Deep Blue Star Sapphire, Oval, Opaque

7 x 5 mm (calibrated)

$ 38.36

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3.24ctw Dark Blue Star Sapphire, Oval, Opaque

7 x 5 mm (calibrated)

$ 76.98

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3.03ctw Deep Blue Star Sapphire, Oval, Opaque

7 x 5 mm (calibrated)

$ 79.99

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4.68ctw Deep Blue Star Sapphire, Oval, Opaque

7 x 5 mm (calibrated)

$ 123.55

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4.64ctw Dark Blue Star Sapphire, Oval, Opaque

7 x 5 mm (calibrated)

$ 122.50

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2.93ctw Deep Navy Blue Star Sapphire, Oval, Opaque

7 x 5 mm (calibrated)

$ 77.35

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3.09ctw Deep Blue Star Sapphire, Round, Opaque

6 mm (calibrated)

$ 77.50

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3.45ctw Dark Blue Star Sapphire, Oval, Opaque

7 x 5 mm (calibrated)

$ 91.08

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5.23ctw Navy Blue Star Sapphire, Oval, Opaque

7 x 5 mm (calibrated)

$ 138.07

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0.58ct Night Blue Star Sapphire, Oval, Opaque

4.8 x 3.8 mm

$ 23.20

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2.76ct Navy Blue Star Sapphire, Oval, Opaque

9 x 7 mm (calibrated)

$ 63.48

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3.93ctw Deep Navy Blue Star Sapphire, Oval, Opaque

7 x 5 mm (calibrated)

$ 103.75

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4.43ctw Dark Blue Star Sapphire, Oval, Opaque

7 x 5.2 mm

$ 106.32

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2.48ctw Navy Blue Star Sapphire, Oval, Opaque

7 x 5.3 mm

$ 68.45

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5.60ctw Dark Blue Star Sapphire, Oval, Opaque

7 x 5 mm (calibrated)

$ 133.06

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5.18ctw Deep Navy Blue Star Sapphire, Oval, Opaque

7 x 5 mm (calibrated)

$ 123.07

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3.59ctw Deep Navy Blue Star Sapphire, Oval, Opaque

7 x 5 mm (calibrated)

$ 94.78

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4.71ctw Deep Blue Star Sapphire, Oval, Opaque

7 x 5 mm (calibrated)

$ 111.91

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4.52ctw Deep Navy Blue Star Sapphire, Oval, Opaque

7 x 5 mm (calibrated)

$ 107.40

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0.62ct Dark Blue Star Sapphire, Round, Opaque

5 mm (calibrated)

$ 24.80

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0.65ct Dark Blue Star Sapphire, Oval, Opaque

5 x 4 mm (calibrated)

$ 26.00

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3.75ctw Dark Blue Star Sapphire, Oval, Opaque

7 x 5 mm (calibrated)

$ 89.10

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0.55ct Deep Navy Blue Star Sapphire, Oval, Opaque

5.1 x 4.3 mm

$ 22.00

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1.40ct Deep Blue Star Sapphire, Oval, Opaque

8 x 6 mm (calibrated)

$ 56.00

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Why Buy Blue Star Sapphires from GemSelect?

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.

Loose Blue Star Sapphire Gemstones with Asterism Effect

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 -> 9 star ratings

Been using them for years! Very satisfied with the products.

Posted By PI SC in May, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

So far, my experience was great...Thanks

Posted By Kaydi in May, 2025
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Overall Rating -> 10 star ratings

All good

Posted By DouscheGift in August, 2025
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Overall Rating -> 10 star ratings

I purchased from you before and I have never been disappointed. I always received what I expected and your products are very nice.

Posted By MVK in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

GemSelect is always my first choice for purchasing gemstones. The fact that the gems are always exactly as described and pictured on the website has earned my trust many times over. Even when I don't buy, I still love browsing all the beautiful stones. My new favorites are the bright green Tsavorites!

Posted By Lkcisneros in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I have shopped at Gemselect for nearly 20 years. I especially like that you see pictures of the exact gem you are purchasing. You are a trusted source.

Posted By DNaber in October, 2025
Source: Bizrate
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