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Buy Star Gemstones

(1259)
Gem Type Weight Size Clarity Price Origin
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Warm Yellow Star Sapphire Gem - 28.3ct Oval Cabochon (ID: 522538)

Oval Yellow Star Sapphire

28.3ct
18 x 15.1 mm
$ 254.61
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Medium Grey Star Sapphire Gem - 13.5ct Oval Cabochon (ID: 470809)

Oval Gray Star Sapphire

13.5ct
13.7 x 11.6 mm
$ 471.10
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Light Grey Star Sapphire Gem - 21.2ct Round Cabochon (ID: 470844)

Round Gray Star Sapphire

21.2ct
14.7 mm
$ 743.05
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Golden Yellow Star Sapphire Gem - 14.4ct Oval Cabochon (ID: 522548)

Oval Golden Star Sapphire

14.4ct
15 x 12.2 mm
$ 129.24
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44 pcs
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Dark Blue Star Sapphire Gem - 1.1ct Oval Cabochon (ID: 503790)

1 pc (avg. 1.05 ct) Blue Star Sapphire

7.2 x 5.2 mm
$ 20.94
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Very Light Grey Star Sapphire Gem - 9.4ct Round Cabochon (ID: 470803)

Round Gray Star Sapphire

9.4ct
11.2 mm
$ 328.65
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Medium Yellow Star Sapphire Gem - 48.3ct Oval Cabochon (ID: 522542)

Oval Yellow Star Sapphire

48.3ct
21.8 x 18.3 mm
$ 434.61
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4 pcs
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Raspberry Red Star Ruby Gem - 3.5ct Oval Cabochon (ID: 521726)

1 pc (avg. 3.48 ct) Purple Star Ruby

8.6 x 7.4 mm
$ 52.24
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Light Grey Star Sapphire Gem - 10.7ct Oval Cabochon (ID: 470842)

Oval Gray Star Sapphire

10.7ct
11.7 x 11.1 mm
$ 374.15
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Medium Pink Star Rose Quartz Gem - 236.3ct Oval Cabochon (ID: 344438)

Oval Pink Star Rose Quartz

236.3ct
38.2 x 36.2 mm
$ 590.75
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Reddish Purple Star Ruby Gem - 127.7ct Oval Cabochon (ID: 513651)

Oval Purple Star Ruby

127.7ct
28.2 x 25.8 mm
$ 1,915.20
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Light Yellow Star Moonstone Gem - 12.5ct Oval Cabochon (ID: 484388)

Oval Yellow Star Moonstone

12.5ct
15.3 x 13.2 mm
$ 50.04
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Orangish Gold Star Sapphire Gem - 141ct Oval Cabochon (ID: 523193)

Oval Golden Star Sapphire

141ct
32.1 x 27.2 mm
$ 1,269.00
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Dark Red Star Garnet Gem - 102.6ct Round Cabochon (ID: 404010)

Round Red Star Garnet

102.6ct
26.5 mm
$ 307.71
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9 pcs
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Raspberry Red Star Ruby Gem - 3.6ct Oval Cabochon (ID: 521727)

1 pc (avg. 3.64 ct) Purple Star Ruby

9.2 x 7.7 mm
$ 54.56
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Dark Red Star Garnet Gem - 92.7ct Oval Cabochon (ID: 404007)

Oval Red Star Garnet

92.7ct
29.1 x 24 mm
$ 278.04
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Black Star Sapphire Gem - 20.3ct Oval Cabochon (ID: 350892)

Oval Black Star Sapphire

20.3ct
19.2 x 15.9 mm
$ 553.92
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Light Grey Star Sapphire Gem - 11ct Round Cabochon (ID: 470800)

Round Gray Star Sapphire

11ct
11.5 mm
$ 383.95
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Mahogany Red Star Garnet Gem - 91.1ct Oval Cabochon (ID: 404006)

Oval Red Star Garnet

91.1ct
28.4 x 24.1 mm
$ 273.15
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Light Yellow Star Moonstone Gem - 10.4ct Oval Cabochon (ID: 416501)

Oval Yellow Star Moonstone

10.4ct
14.1 x 12.2 mm
$ 41.72
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Navy Blue Star Sapphire Gem - 0.7ct Oval Cabochon (ID: 566000)

Oval Blue Star Sapphire

0.7ct
6.8 x 4.9 mm
$ 13.30
Item in Stock

About Star Gemstones

Why buy Star Gemstones?

In the world of gemstones, there is a small but special group of gems known to exhibit chatoyancy, either in the form of 'simple' chatoyancy, cat's eye chatoyancy or asterism (star chatoyancy). Gems that display the star effect are rare and fascinating. Chatoyancy is one of several forms of optical phenomena; other forms of optical phenomena include (but are not limited to) color-change, iridescence (the rainbow effect) and adularescence (shimmering light).

Gems which display chatoyancy are known as 'phenomenal gemstones' and are heavily prized by jewelers and collectors for their rare and unique visible traits. The star phenomena is known to occur in only a handful of different gem types, such as star sapphire, star ruby, star garnet, star quartz, star moonstone and star diopside.

What are some of the properties of Star Gemstones?

The value of star gemstones usually depends on the clarity of the 'star'. Gems which display sharp, clear and well-centered stars are generally considered to be of higher quality. In addition, gems which show stars from wider angles and under all different types of lighting are valued the most.

Most star gemstones will often show their chatoyancy only when viewed under a single strong and focused light source; it is usually very difficult to see any asterism under diffused light.

What are good ways to use Star Gemstones?

When viewing a star gemstone, it is best to use a flashlight or penlight while tilting the gem and light back and forth. This should cause the star to appear to glide across the stone's surface. Star gemstones are always cut en cabochon, as this is the best way to maximize chatoyancy.

Gem cutters must be careful when working with star gemstones, as it requires great skill to shape and orient the stones correctly. For these reasons, it is best to display star gemstones under intense light or in direct-light when wearing them.

Want to know more about Star Gemstones?

Read our Star Gemstones Information Page here.

Certified Customer Reviews
Overall Rating -> 10 star ratings
The website is very easy to use, easy to find by color, calibrated size, etc. Easy checkout with PayPal (many gem merchants do not accept this payment form). Uses standardized clarity scale, etc.
Posted By AnonymousShopper in October, 2020
Source: Bizrate
Overall Rating -> 10 star ratings
I love the quality of the gemstones and how quickly they arrive. The service is extremely professional and high quality. I have already recommended GemSelect to a friend with great interest in Vedic Gemstones.
Posted By Penny in October, 2020
Source: Bizrate
Overall Rating -> 10 star ratings
Purchased from you before
Posted By T in October, 2020
Source: Bizrate
Overall Rating -> 10 star ratings
Excellent prices and great quality.
Posted By Tamcgrew in October, 2020
Source: Bizrate
Overall Rating -> 10 star ratings
I love that the sapphires I bought have the same quality as I see on my computer screen. I highly recommend GemSelect.
Posted By MariaH in October, 2020
Source: Bizrate
Overall Rating -> 9 star ratings
If your looking for a gem go and look at GemSelect. I found what I was looking for at a good price
Posted By Redbone in October, 2020
Source: Bizrate
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All Gemstones (144)
A B C D E F G H I J K L M N O P Q R S T V Z
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Size and Weight

Gems are always measured in Millimeter (mm)

Dimensions are given as;
length x width x depth,
except for round stones which are;
diameter x depth

Select gems by size, not by weight!
Gem varieties vary in density, so carat weight is not a good indication of size

Note: 1ct = 0.2g

Size Comparison Chart