New Arrivals Pairs Lots Contact
  : Star Cabochon Gemstones
Shop By

Single

Pairs

Lots

Faceted

Cab

Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (175): Star Cabochon Gemstones Star Sapphire, Star Ruby, Star Moonstone, Star Rose Quartz, Star Diopside, Star Sunstone, Star Garnet, Star Lemon Quartz Clear All
Sort By:
Compare
ID: 4029601 pcs
20.61ct Star Moonstone
16.75mm x 14.98mm x 11.38mm
USD 72.75
Item in Stock
Compare
ID: 4040111 pcs
159.09ct Star Garnet
32.28mm x 29.05mm x 16.02mm
USD 477.27
Item in Stock
Compare
ID: 4140071 pcs
4.32ct Star Moonstone
10.73mm x 8.65mm x 6.23mm
USD 17.28
Item in Stock
Compare
ID: 4139701 pcs
17.15ct Star Moonstone
17.14mm x 13.65mm x 10.26mm
USD 68.60
Item in Stock
Compare
ID: 4140021 pcs
5.46ct Star Moonstone
12.43mm x 9.68mm x 6.24mm
USD 21.84
Item in Stock
Compare
ID: 3875281 pcs
6.59ct Star Sapphire
11.52mm x 8.55mm x 6.20mm
USD 131.80
Item in Stock
Compare
ID: 3884601 pcs
9.40ct Star Sapphire
12.90mm x 10.40mm x 5.67mm
USD 152.66
Item in Stock
Compare
ID: 4031961 pcs
13.75ct Star Moonstone
15.92mm x 11.76mm x 11.08mm
USD 48.54
Item in Stock
Compare
ID: 3258111 pcs
20.62ct Star Moonstone
17.24mm x 15.10mm x 11.10mm
USD 82.48
Item in Stock
Compare
ID: 4140851 pcs
6.89ct Star Moonstone
12.32mm x 10.14mm x 7.37mm
USD 27.56
Item in Stock
Compare
ID: 3906461 pcs
10.24ct Star Sapphire
13.09mm x 10.55mm x 6.39mm
USD 153.60
Item in Stock
Compare
ID: 4141491 pcs
71.96ct Star Garnet
24.69mm x 20.07mm x 13.11mm
USD 215.88
Item in Stock
Compare
ID: 3547611 pcs
499.60ct Star Rose Quartz
50.25mm x 44.90mm x 35.08mm
USD 999.20
Item in Stock
Compare
ID: 3153761 pcs
14.61ct Star Moonstone
13.47mm x 10.84mm
USD 58.44
Item in Stock
Compare
ID: 3139791 pcs
133.15ct Star Rose Quartz
31.59mm x 29.05mm x 19.59mm
USD 266.30
Item in Stock
Compare
ID: 2135191 pcs
22.41ct Star Moonstone
16.50mm x 11.78mm
USD 89.64
Item in Stock
Compare
ID: 4140871 pcs
7.27ct Star Moonstone
11.37mm x 10.02mm x 8.24mm
USD 29.08
Item in Stock
Compare
ID: 3862761 pcs
9.40ct Star Sapphire
13.43mm x 10.57mm x 6.01mm
USD 90.62
Item in Stock
Compare
ID: 4139651 pcs
9.78ct Star Moonstone
14.88mm x 12.74mm x 6.71mm
USD 39.12
Item in Stock
Compare
ID: 3444341 pcs
83.38ct Star Rose Quartz
27.87mm x 23.98mm x 17.02mm
USD 208.45
Item in Stock
Compare
ID: 4141421 pcs
45.93ct Star Garnet
20.79mm x 18.14mm x 10.60mm
USD 137.79
Item in Stock
1
2
3
4
5
6
7
8
9
Star Cabochon 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.

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.
English speaking customer support only

Toll Free - USA & Canada only:
1-800-464-1640

International:
+66-39340503

Reorder Items

Save Money
No shipping Fees for Additional Items!
$6.99 Worldwide Shipping

GemSelect Gemstones
X Close Window
Colored Gemstones
X Close Window
Colored Gemstones
X Close Window
Colored Gemstones
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