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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (160): 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: 4029541 pcs
thumb image of 13.9ct Oval Cabochon Cream Star Moonstone (ID: 402954)
13.92ct Star Moonstone
17.13 x 13.21 x 8.72mm
USD 49.14
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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: 3153731 pcs
thumb image of 10.6ct Oval Cabochon Cream Star Moonstone (ID: 315373)
10.60ct Star Moonstone
13.86 x 12.50 x 9.08mm
USD 42.40
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ID: 3734521 pcs
thumb image of 84.6ct Oval Cabochon Lemon Star Lemon Quartz (ID: 373452)
84.63ct Star Lemon Quartz
25.18 x 22.54 x 19.54mm
USD 253.89
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ID: 3071711 pcs
thumb image of 17.6ct Oval Cabochon Cream Star Moonstone (ID: 307171)
17.55ct Star Moonstone
16.40 x 12.72 x 11.65mm
USD 70.20
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ID: 4476561 pcs
thumb image of 5.3ct Oval Cabochon Orange Cream Star Moonstone (ID: 447656)
5.32ct Star Moonstone
12.24 x 10.20 x 5.88mm
USD 21.28
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ID: 4141361 pcs
thumb image of 30ct Oval Cabochon Black Red Star Garnet (ID: 414136)
30.03ct Star Garnet
20.92 x 16.91 x 7.48mm
USD 90.09
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ID: 4030671 pcs
thumb image of 22.8ct Oval Cabochon Cream Star Moonstone (ID: 403067)
22.78ct Star Moonstone
17.78 x 14.53 x 12.06mm
USD 80.41
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ID: 4141441 pcs
thumb image of 51.3ct Oval Cabochon Black Red Star Garnet (ID: 414144)
51.33ct Star Garnet
22.92 x 19.10 x 10.35mm
USD 153.99
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ID: 2135221 pcs
thumb image of 19.7ct Round Cabochon Orange Cream Star Moonstone (ID: 213522)
19.71ct Star Moonstone
17.79 x 9.36mm
USD 78.84
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ID: 4040051 pcs
thumb image of 71.4ct Oval Cabochon Black Red Star Garnet (ID: 404005)
71.36ct Star Garnet
26.99 x 21.20 x 11.97mm
USD 214.08
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ID: 3906461 pcs
thumb image of 10.2ct Oval Cabochon Black Star Sapphire (ID: 390646)
10.24ct Star Sapphire
13.09 x 10.55 x 6.39mm
USD 153.60
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ID: 3906531 pcs
thumb image of 5.6ct Oval Cabochon Black Star Sapphire (ID: 390653)
5.61ct Star Sapphire
10.43 x 7.77 x 5.67mm
USD 84.15
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ID: 4140371 pcs
thumb image of 30.3ct Oval Cabochon Black Red Star Garnet (ID: 414037)
30.27ct Star Garnet
17.75 x 13.76 x 10.78mm
USD 90.81
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ID: 4141951 pcs
thumb image of 9.1ct Oval Cabochon Cream Star Moonstone (ID: 414195)
9.07ct Star Moonstone
14.19 x 9.91 x 8.59mm
USD 36.28
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ID: 3906511 pcs
thumb image of 6.4ct Oval Cabochon Black Star Sapphire (ID: 390651)
6.38ct Star Sapphire
11.56 x 9.14 x 5.29mm
USD 95.70
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ID: 3885381 pcs
thumb image of 6.3ct Oval Cabochon Black Star Sapphire (ID: 388538)
6.32ct Star Sapphire
14.65 x 11.58 x 3.20mm
USD 150.54
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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: 4141491 pcs
thumb image of 72ct Oval Cabochon Black Red Star Garnet (ID: 414149)
71.96ct Star Garnet
24.69 x 20.07 x 13.11mm
USD 215.88
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ID: 4038911 pcs
thumb image of 80.8ct Round Cabochon Black Red Star Garnet (ID: 403891)
80.78ct Star Garnet
24.38 x 12.74mm
USD 242.34
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ID: 4140461 pcs
thumb image of 30.1ct Round Cabochon Black Red Star Garnet (ID: 414046)
30.14ct Star Garnet
17.24 x 9.04mm
USD 90.42
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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