Natural Star Gemstones
Discover rare star gemstones displaying the fascinating star effect known as asterism, perfect for collectors and unique jewelry designs.
|
Bi-color
|
Black Star Gemstones
|
Blue Star Gemstones
|
Brown Star Gemstones
|
Golden
|
Gray Star Gemstones
|
Green
|
Multicolor
|
Orange Star Gemstones
|
Pink Star Gemstones
|
Purple Star Gemstones
|
Red Star Gemstones
|
Turquoise
|
Violet
|
White
|
Yellow Star Gemstones
|
Single |
Pairs |
Lots |
Faceted |
Cabochons |
5.51ct Black Star Diopside, Oval, Opaque
11 x 9 mm (calibrated)
$ 27.44
2.26ct Black Star Diopside, Oval, Opaque
8 x 6 mm (calibrated)
$ 11.25
3.12ct Red Star Ruby, Round, Opaque
8 mm (calibrated)
$ 49.72
11.09ct Black Star Diopside, Round, Opaque
12 mm (calibrated)
$ 55.23
5.71ct Black Star Sapphire, Oval, Opaque
10 x 8 mm (calibrated)
$ 102.37
4.38ct Black Star Sapphire, Oval, Opaque
11 x 9 mm (calibrated)
$ 78.53
4.68ct Black Star Diopside, Oval, Opaque
11 x 9 mm (calibrated)
$ 23.31
21.95ct Purple Star Ruby, Oval, Opaque
16.1 x 14.5 mm
$ 288.58
12.56ct Purple Star Ruby, Oval, Opaque
15.3 x 12.4 mm
$ 165.13
4.99ct Brown Star Moonstone, Oval, Translucent
13.9 x 11.2 mm
$ 21.87
5.32ct Orange Star Moonstone, Oval, Translucent
11 x 9 mm (calibrated)
$ 23.31
5.15ct Black Star Diopside, Oval, Opaque
11 x 9 mm (calibrated)
$ 21.37
57.92ct Red Star Garnet, Oval, Opaque
24.3 x 21.2 mm
$ 57.11
15.19ct Purple Star Ruby, Oval, Opaque
15.2 x 12.9 mm
$ 199.71
5.78ct Purple Star Ruby, Oval, Opaque
9.3 x 8.2 mm
$ 69.08
3.91ctw Blue Star Sapphire, Oval, Opaque
6.9 x 5.2 mm
$ 77.11
9.08ct Brown Star Sunstone, Round, Opaque
14 mm (calibrated)
$ 75.36
4.60ct Black Star Diopside, Oval, Opaque
11 x 9 mm (calibrated)
$ 22.91
86.18ct Red Star Garnet, Round, Opaque
25 mm
$ 89.27
18.38ct Purple Star Ruby, Oval, Opaque
16.2 x 13.3 mm
$ 241.65
3.62ct Black Star Sapphire, Oval, Opaque
10 x 8 mm (calibrated)
$ 64.90
3.84ct Red Star Ruby, Oval, Opaque
9.6 x 6.7 mm
$ 61.20
4.05ctw Blue Star Sapphire, Oval, Opaque
7 x 5 mm (calibrated)
$ 88.74
5.52ct Gray Star Sapphire, Oval, Opaque
9.5 x 8.5 mm
$ 211.67
- Page 1
- Page 2
- Page 3
- Page 4
- Page 5
- Page 6
- Page 7
- Page 8
- Page 9
- Page 10
- Page 11
- Page 12
- Page 13
- Page 14
- Page 15
- Page 16
- Page 17
- Page 18
- Page 19
- Page 20
- Page 21
- Page 22
- Page 23
- Page 24
- Page 25
- Page 26
- Page 27
- Page 28
- Page 29
- Page 30
- Page 31
- Page 32
- Page 33
- Page 34
- Page 35
- Page 36
- Page 37
- Page 38
- Page 39
- Page 40
- Page 41
Why Buy Star Gemstones 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 Star Gemstones
Our natural star gemstones display the rare optical phenomenon known as asterism, where a star-shaped reflection appears across the gem’s surface. These unique stones are prized by collectors and jewelers for their striking appearance and rarity.
Star Gemstones Online
Buy star gemstones online at GemSelect with confidence. Our collection includes star sapphire, star ruby, and other rare gems with visible star effects, all available as loose stones ready for custom jewelry.
The Unique Star Effect (Asterism)
The star seen in these gemstones is caused by tiny needle-like inclusions that reflect light in a star-shaped pattern. This optical phenomenon, called asterism, becomes visible when the gemstone is cut as a smooth cabochon.
Star Sapphire Gemstones
Star sapphire is the most famous star gemstone, often displaying a clear six-rayed star across its surface. These gems are durable and popular for rings, pendants, and collector pieces.
Star Ruby Gemstones
Star rubies are rare and highly valued. When illuminated, they reveal a sharp star pattern over their deep red body color, making them one of the most sought-after asterism gemstones.
Cabochon Cut Star Stones
Star gemstones are typically cut as cabochons rather than faceted stones. The smooth, domed surface allows the star effect to appear clearly when the gem is viewed under direct light.
Loose Star Gemstones for Jewelry
Loose star gemstones are perfect for custom jewelry designs. Their distinctive optical effect makes them ideal for rings, pendants, and statement pieces that stand out from traditional faceted gems.
Collectible Star Gemstones
Many collectors seek star gemstones due to their rarity and unusual appearance. High-quality stones with centered and well-defined stars are especially desirable among gem enthusiasts.
Learn more about the properties and fascinating optical effects of gemstones on our Gemstone Optical Effects Guide.
FAQs
What are star gemstones?
Star gemstones are gems that display a star-shaped reflection on their surface. This optical phenomenon is called asterism and is most commonly seen in star sapphire and star ruby.
What causes the star effect in gemstones?
The star effect is caused by microscopic needle-like inclusions inside the gem that reflect light in intersecting lines, creating a visible star pattern when viewed under direct light.
Which gemstones show a star effect?
The most well-known star gemstones are star sapphire and star ruby, but asterism can also appear in gems like star garnet, star diopside, and occasionally in quartz.
Why are star gemstones cut as cabochons?
The cabochon cut allows the star pattern to appear clearly on the gem’s surface. Faceting would disrupt the optical effect and prevent the star from forming.
How can you see the star in a gemstone?
The star becomes visible when light hits the surface of the gemstone. Rotating the stone under a light source will make the star move across the surface.
GemSelect Certified Store Reviews
GemSelect: Over 22 Years in the Gemstone Business! Thank you for trusting us with your purchase!
Overall Rating -> 10 
Over pretty well experience the your website no complaints about it very easy reliable service provided
Overall Rating -> 10
Very food
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
I love the ability to choose from many options of shapes, gemstone type, color, and so forth. It is fun!
Overall Rating -> 10
It's mostly good, only some item's are easier to find through the search than the menu
Overall Rating -> 10
Found a beautiful opal at a great price. I was not disappointed when it arrived. Even better in person.
