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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (11396): Phenomenal Gemstones - Star Sapphire, Andalusite, Kyanite, Rose Quartz, Tanzanite, Rainbow Moonstone, Iolite, Star Ruby, Star Moonstone, Moonstone, Cat's Eye Apatite, Fire Opal, Color Change Garnet, Moss Opal, Opal, Opal Doublet, Aventurine, Cat's Eye Tourmaline, Tiger's Eye, Color Change Sapphire, Star Rose Quartz, Pearl, Cat's Eye Scapolite, Labradorite, Fire Agate, Scapolite, Star Diopside, Cat's Eye Aquamarine, Star Sunstone, Cat's Eye Diaspore, Cat's Eye Chrysoberyl, Star Garnet, Alexandrite, Cat's Eye Quartz, Tiger's Eye Matrix, Cat's Eye Sillimanite, Charoite, Rainbow Pyrite Druzy, Obsidian, Seraphinite, Color-Change Diaspore, Boulder Opal, Ammolite, Pietersite, Chocolate Opal, Black Opal, Cat's Eye Moonstone, Star Lemon Quartz, Hawk's Eye, Actinolite Cat's Eye, Cat's Eye Beryl, Mother of Pearl, Color-Change Fluorite, Opal in Matrix Clear All
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thumb image of 1.3ct Pear Facet Yellow Opal (ID: 308207)
1.33 ct Opal
11 x 8 mm
$ 57.19
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1 pc
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thumb image of 30.7ct Fancy Cabochon Multicolor Fire Agate (ID: 490655)
30.74 ct Fire Agate
28.8 x 19.4 mm
$ 169.07
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1 pc
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thumb image of 0.9ct Octagon Step Cut Green to Pink Color-Change Diaspore (ID: 478516)
0.86 ct Color-Change Diaspore
6.2 x 4.4 mm
$ 27.55
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1 pc
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thumb image of 4.2ct Round Petal Cut Pink Rose Quartz (ID: 414681)
4.19 ct Rose Quartz
10.1 mm
$ 20.95
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1 pc
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thumb image of 1.3ct Fancy Cabochon Multicolor Fire Agate (ID: 490844)
1.30 ct Fire Agate
10.8 x 6.4 mm
$ 7.15
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1 pc
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thumb image of 123.4ct Oval Cabochon Gold Sheen Black Obsidian (ID: 447905)
123.42 ct Obsidian
65.1 x 33.1 mm
$ 123.42
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2 pcs
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thumb image of 1.9ct Oval Facet Orange Fire Opal (ID: 449555)
1.87 ctw Fire Opal
8.8 x 6.9 mm
$ 50.10
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1 pc
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thumb image of 91.7ct Fancy Cabochon Violet Charoite (ID: 344690)
91.73 ct Charoite
36.1 x 26.2 mm
$ 137.60
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1 pc
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thumb image of 4.3ct Fancy Cabochon Multicolor Ammolite (ID: 377654)
4.32 ct Ammolite
15.5 x 7.2 mm
$ 43.20
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1 pc
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thumb image of 17.8ct Oval Cabochon Cream Star Moonstone (ID: 417030)
17.80 ct Star Moonstone
17.7 x 14.8 mm
$ 71.20
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2 pcs
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thumb image of 6.1ct Asscher Cut Pink Rose Quartz (ID: 394577)
6.08 ctw Rose Quartz
9.2 x 9.1 mm
$ 30.40
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1 pc
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thumb image of 20.8ct Oval Cabochon Greenish Golden Cat's Eye Apatite (ID: 385349)
20.82 ct Cat's Eye Apatite
17.9 x 15.2 mm
$ 298.20
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2 pcs
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thumb image of 3.5ct Oval Facet Violet Blue Tanzanite (ID: 361661)
3.46 ctw Tanzanite
8.5 x 6.7 mm
$ 393.54
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20 pcs
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thumb image of 8.2ct Oval Facet Multicolor Andalusite (ID: 323685)
8.19 ctw Andalusite
5.8 x 4.1 mm
$ 409.50
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1 pc
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thumb image of 18.3ct Oval Cabochon Multicolor Opal (ID: 467270)
18.33 ct Opal
20 x 16.9 mm
$ 737.97
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1 pc
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thumb image of 6.4ct Oval Cabochon White Star Moonstone (ID: 494518)
6.44 ct Star Moonstone
14.3 x 8.8 mm
$ 8.57
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thumb image of 14.1ct Oval Cabochon Black Cat's Eye Scapolite (ID: 484111)
14.13 ct Cat's Eye Scapolite
14.6 x 13.9 mm
$ 70.65
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4 pcs
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thumb image of 5.2ct Carved Flower Peach-Pink Moonstone (ID: 485291)
5.18 ctw Moonstone
8.4 x 8.4 mm
$ 20.72
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4 pcs
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thumb image of 9.1ct Briolette with Hole Pink Rose Quartz (ID: 484585)
9.11 ctw Rose Quartz
10.3 mm
$ 18.22
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1 pc
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thumb image of 2.6ct Oval Cabochon Green Quartz Cat's Eye (ID: 472346)
2.64 ct Quartz Cat's Eye
10.8 x 6.2 mm
$ 7.92
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thumb image of 544.4ct Carved Owl Gray Blue Sheen Labradorite (ID: 470550)
544.43 ct Labradorite
55.7 x 69.1 mm
$ 337.55
Item in Stock
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Phenomenal Gemstones
Phenomenal gemstones are extremely rare and highly prized; truly one of nature's most impressive creations. Gemstone optical phenomena is a result which varies, due to the way light either interacts or interferes with the structural anatomy of any given gemstone. Light interaction or interference can be seen in the form of reflection, refraction, diffraction, scattering, absorption and transmission. There are many different forms of gemstone phenomena, while some effects are quite common, simple and subtle; some are absolutely astounding and dramatic.

Phenomenal gems make excellent gifts for both novice and veteran gem collectors. Most would expect such exotic gemstones to come with a hefty price tag, but many phenomenal gems are surprisingly very affordable. Some examples of gemstone phenomena and popular gem types known to exhibit phenomenal qualities include adularescence, aventurescence, chatoyancy, asterism, iridescence, labradorescence, color change, play of color, pleochroism, fluorescence and tenebrescence.

Certified Customer Reviews
Overall Rating -> 10 star ratings
Happy about the experience of the store, a lot of stone urge very nice
Posted By Ginger22 in April, 2018
Source: Bizrate
Overall Rating -> 10 star ratings
Great products, reasonably priced, always a great shopping experience
Posted By Cas Brown in April, 2018
Source: Bizrate
Overall Rating -> 10 star ratings
good all is very good
Posted By Arocas in April, 2018
Source: Bizrate
Overall Rating -> 10 star ratings
Ease of selection- guarantee- honesty
Posted By Curt in April, 2018
Source: Bizrate
Overall Rating -> 8 star ratings
when I need a colored stone I check gem select. a trusted supplier for at least 10 years for me. many of the online sites have gone black but gemselect continues to satisfy me. oh sure there are many windowed and poorly cut stones here so paying some attention is critical. remember these are not custom cut stones but rather cut by old methods and the aim is to keep weight up at the expense of optical perfection. remember that colored stones are about color as the first consideration. I just wish gemselect offered rough for those who want to cut it.
Posted By Bis in April, 2018
Source: Bizrate
Overall Rating -> 10 star ratings
Wow, great site with clear, concise information that is provided in a very user-friendly interface. I feel lucky to have found this given I am about ready to ask my dream girl to marry me. Thanks!
Posted By JJ in April, 2018
Source: Bizrate
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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