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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (158): 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: 3734601 pcs
thumb image of 55.5ct Oval Cabochon Lemon Star Lemon Quartz (ID: 373460)
55.45ct Star Lemon Quartz
22.47 x 19.70 x 16.95mm
USD 166.35
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ID: 3858581 pcs
thumb image of 9.8ct Oval Cabochon Black Star Sapphire (ID: 385858)
9.82ct Star Sapphire
12.09 x 10.78 x 6.37mm
USD 147.30
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ID: 3444381 pcs
thumb image of 236.3ct Oval Cabochon Pink Star Rose Quartz (ID: 344438)
236.30ct Star Rose Quartz
38.16 x 36.21 x 25.38mm
USD 590.75
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ID: 2135191 pcs
thumb image of 22.4ct Round Cabochon Orange Cream Star Moonstone (ID: 213519)
22.41ct Star Moonstone
16.50 x 11.78mm
USD 89.64
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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: 4040031 pcs
thumb image of 57.4ct Oval Cabochon Black Red Star Garnet (ID: 404003)
57.41ct Star Garnet
23.79 x 21.00 x 10.57mm
USD 172.23
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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: 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: 3875261 pcs
thumb image of 8.3ct Oval Cabochon Black Star Sapphire (ID: 387526)
8.31ct Star Sapphire
13.25 x 9.94 x 5.87mm
USD 166.20
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ID: 4040041 pcs
thumb image of 57.5ct Oval Cabochon Black Red Star Garnet (ID: 404004)
57.48ct Star Garnet
24.35 x 20.44 x 10.57mm
USD 172.44
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ID: 3506421 pcs
thumb image of 32.7ct Oval Cabochon Black Star Sapphire (ID: 350642)
32.66ct Star Sapphire
18.76 x 14.98 x 9.42mm
USD 890.31
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ID: 4038921 pcs
thumb image of 40.3ct Oval Cabochon Black Red Star Garnet (ID: 403892)
40.30ct Star Garnet
21.29 x 17.93 x 9.62mm
USD 120.90
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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: 3939711 pcs
thumb image of 6.8ct Pear Cabochon Black Star Sapphire (ID: 393971)
6.82ct Star Sapphire
12.40 x 9.35 x 5.09mm
USD 58.79
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ID: 4140071 pcs
thumb image of 4.3ct Oval Cabochon Cream Peach Star Moonstone (ID: 414007)
4.32ct Star Moonstone
10.73 x 8.65 x 6.23mm
USD 17.28
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ID: 4141941 pcs
thumb image of 10.3ct Oval Cabochon Cream Star Moonstone (ID: 414194)
10.34ct Star Moonstone
13.93 x 10.54 x 9.02mm
USD 41.36
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ID: 3506471 pcs
thumb image of 7.8ct Oval Cabochon Black Star Sapphire (ID: 350647)
7.83ct Star Sapphire
13.77 x 9.57 x 5.11mm
USD 151.20
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ID: 4038891 pcs
thumb image of 62.4ct Round Cabochon Black Red Star Garnet (ID: 403889)
62.40ct Star Garnet
24.34 x 9.79mm
USD 187.20
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ID: 3876881 pcs
thumb image of 4.5ct Oval Cabochon Black Star Sapphire (ID: 387688)
4.46ct Star Sapphire
12.26 x 8.89 x 3.49mm
USD 89.20
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ID: 4038841 pcs
thumb image of 56.5ct Round Cabochon Black Red Star Garnet (ID: 403884)
56.50ct Star Garnet
20.85 x 12.22mm
USD 169.50
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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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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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