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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (164): 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: 4029591 pcs
thumb image of 16.4ct Oval Cabochon Cream Star Moonstone (ID: 402959)
16.35ct Star Moonstone
18.03 x 13.12 x 10.02mm
USD 57.72
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ID: 4141011 pcs
thumb image of 7.4ct Oval Cabochon Cream Star Moonstone (ID: 414101)
7.41ct Star Moonstone
14.19 x 9.96 x 6.93mm
USD 29.64
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ID: 3801961 pcs
thumb image of 52ct Oval Cabochon Reddish Black Star Garnet (ID: 380196)
52.01ct Star Garnet
21.20 x 17.93 x 11.98mm
USD 260.05
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ID: 4140851 pcs
thumb image of 6.9ct Oval Cabochon Cream Peach Star Moonstone (ID: 414085)
6.89ct Star Moonstone
12.32 x 10.14 x 7.37mm
USD 27.56
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ID: 3547641 pcs
thumb image of 270.2ct Round Cabochon Pink Star Rose Quartz (ID: 354764)
270.20ct Star Rose Quartz
37.22 x 27.67mm
USD 540.40
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ID: 3906451 pcs
thumb image of 10.1ct Oval Cabochon Black Star Sapphire (ID: 390645)
10.09ct Star Sapphire
13.67 x 11.33 x 5.47mm
USD 151.35
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ID: 3801941 pcs
thumb image of 47.5ct Round Cabochon Reddish Black Star Garnet (ID: 380194)
47.52ct Star Garnet
18.56 x 12.01mm
USD 237.60
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ID: 4141471 pcs
thumb image of 40.5ct Round Cabochon Black Red Star Garnet (ID: 414147)
40.47ct Star Garnet
20.27 x 8.36mm
USD 121.41
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ID: 4140941 pcs
thumb image of 6.5ct Oval Cabochon Cream Peach Star Moonstone (ID: 414094)
6.47ct Star Moonstone
10.90 x 9.86 x 7.89mm
USD 25.88
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ID: 3053791 pcs
thumb image of 163.2ct Oval Cabochon Pink Star Rose Quartz (ID: 305379)
163.20ct Star Rose Quartz
32.07 x 28.75 x 23.21mm
USD 326.40
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ID: 3858531 pcs
thumb image of 8.7ct Oval Cabochon Black Star Sapphire (ID: 385853)
8.71ct Star Sapphire
12.96 x 10.14 x 5.70mm
USD 130.65
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ID: 4038941 pcs
thumb image of 43ct Oval Cabochon Black Red Star Garnet (ID: 403894)
43.01ct Star Garnet
22.23 x 19.80 x 9.42mm
USD 129.03
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ID: 3256251 pcs
thumb image of 31.2ct Oval Cabochon Reddish Black Star Garnet (ID: 325625)
31.18ct Star Garnet
17.50 x 14.10 x 11.31mm
USD 155.90
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ID: 4139651 pcs
thumb image of 9.8ct Oval Cabochon Cream Star Moonstone (ID: 413965)
9.78ct Star Moonstone
14.88 x 12.74 x 6.71mm
USD 39.12
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ID: 4180321 pcs
thumb image of 97.9ct Oval Cabochon Black Red Star Garnet (ID: 418032)
97.90ct Star Garnet
24.73 x 22.00 x 15.91mm
USD 489.50
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ID: 3734611 pcs
thumb image of 78.7ct Oval Cabochon Lemon Star Lemon Quartz (ID: 373461)
78.67ct Star Lemon Quartz
24.09 x 22.70 x 19.18mm
USD 236.01
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ID: 4139701 pcs
thumb image of 17.2ct Oval Cabochon Cream Star Moonstone (ID: 413970)
17.15ct Star Moonstone
17.14 x 13.65 x 10.26mm
USD 68.60
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ID: 4139731 pcs
thumb image of 8ct Oval Cabochon Cream Star Moonstone (ID: 413973)
8.03ct Star Moonstone
18.13 x 11.05 x 5.28mm
USD 32.12
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ID: 3072881 pcs
thumb image of 311.7ct Oval Cabochon Pink Star Rose Quartz (ID: 307288)
311.65ct Star Rose Quartz
43.53 x 42.00 x 24.42mm
USD 623.30
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ID: 4040101 pcs
thumb image of 102.6ct Round Cabochon Black Red Star Garnet (ID: 404010)
102.57ct Star Garnet
26.47 x 13.33mm
USD 307.71
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ID: 4141391 pcs
thumb image of 38.2ct Oval Cabochon Black Red Star Garnet (ID: 414139)
38.23ct Star Garnet
21.26 x 16.98 x 9.61mm
USD 114.69
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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

Size Comparison Chart