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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (134): Star Cabochons Star Sapphire, Star Ruby, Star Moonstone, Star Rose Quartz, Star Diopside, Star Sunstone, Star Garnet, Star Lemon Quartz Clear All
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ID: 4141041 pcs
thumb image of 7.3ct Oval Cabochon Peach Orange Star Moonstone (ID: 414104)
7.34 ct Star Moonstone
12.8 x 9.4 mm
$ 29.36
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ID: 4141411 pcs
thumb image of 43.1ct Oval Cabochon Black Red Star Garnet (ID: 414141)
43.14 ct Star Garnet
23.2 x 19 mm
$ 129.42
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ID: 3861021 pcs
thumb image of 9.7ct Oval Cabochon Black Star Sapphire (ID: 386102)
9.74 ct Star Sapphire
13.8 x 10.2 mm
$ 93.89
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ID: 4139751 pcs
thumb image of 11.3ct Oval Cabochon Smoke Star Moonstone (ID: 413975)
11.25 ct Star Moonstone
17.3 x 11.4 mm
$ 45.00
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ID: 4038881 pcs
thumb image of 66ct Round Cabochon Black Red Star Garnet (ID: 403888)
65.99 ct Star Garnet
22.9 mm
$ 197.97
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ID: 3072881 pcs
thumb image of 311.7ct Oval Cabochon Pink Star Rose Quartz (ID: 307288)
311.65 ct Star Rose Quartz
43.5 x 42 mm
$ 623.30
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ID: 4031891 pcs
thumb image of 11.6ct Round Cabochon Cream Star Moonstone (ID: 403189)
11.58 ct Star Moonstone
13.3 mm
$ 40.88
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ID: 4040111 pcs
thumb image of 159.1ct Oval Cabochon Black Red Star Garnet (ID: 404011)
159.09 ct Star Garnet
32.3 x 29.1 mm
$ 477.27
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ID: 4141531 pcs
thumb image of 83.2ct Round Cabochon Black Red Star Garnet (ID: 414153)
83.22 ct Star Garnet
25.3 mm
$ 249.66
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ID: 4476561 pcs
thumb image of 5.3ct Oval Cabochon Orange Cream Star Moonstone (ID: 447656)
5.32 ct Star Moonstone
12.2 x 10.2 mm
$ 21.28
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ID: 4141441 pcs
thumb image of 51.3ct Oval Cabochon Black Red Star Garnet (ID: 414144)
51.33 ct Star Garnet
22.9 x 19.1 mm
$ 153.99
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ID: 4141381 pcs
thumb image of 35.8ct Oval Cabochon Black Red Star Garnet (ID: 414138)
35.84 ct Star Garnet
23 x 17.9 mm
$ 107.52
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ID: 3858561 pcs
thumb image of 12.8ct Oval Cabochon Black Star Sapphire (ID: 385856)
12.80 ct Star Sapphire
14.2 x 11.9 mm
$ 192.00
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ID: 3861121 pcs
thumb image of 8.9ct Oval Cabochon Black Star Sapphire (ID: 386112)
8.94 ct Star Sapphire
12.5 x 9.5 mm
$ 86.18
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ID: 4040071 pcs
thumb image of 92.7ct Oval Cabochon Black Red Star Garnet (ID: 404007)
92.68 ct Star Garnet
29.1 x 24 mm
$ 278.04
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ID: 2621091 pcs
thumb image of 15.9ct Oval Cabochon Orange Cream Star Moonstone (ID: 262109)
15.93 ct Star Moonstone
14.2 x 13.4 mm
$ 63.72
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ID: 3139791 pcs
thumb image of 133.2ct Oval Cabochon Pink Star Rose Quartz (ID: 313979)
133.15 ct Star Rose Quartz
31.6 x 29.1 mm
$ 266.30
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ID: 3052491 pcs
thumb image of 156.6ct Oval Cabochon Pink Star Rose Quartz (ID: 305249)
156.55 ct Star Rose Quartz
32.1 x 28.3 mm
$ 344.41
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ID: 3875341 pcs
thumb image of 6.6ct Oval Cabochon Black Star Sapphire (ID: 387534)
6.57 ct Star Sapphire
11.8 x 8.7 mm
$ 131.40
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ID: 4141921 pcs
thumb image of 8.4ct Oval Cabochon Cream Peach Star Moonstone (ID: 414192)
8.39 ct Star Moonstone
15.7 x 10.7 mm
$ 33.56
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ID: 3801941 pcs
thumb image of 47.5ct Round Cabochon Reddish Black Star Garnet (ID: 380194)
47.52 ct Star Garnet
18.6 mm
$ 237.60
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Star Cabochons
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.

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. 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 properly shape and orient the stones.
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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

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