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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (9473): 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, Chrysoberyl Cat's Eye, Star Garnet, Alexandrite, Quartz Cat's Eye, Tiger's Eye Matrix, Sillimanite Cat's Eye, Charoite, Rainbow Pyrite, Obsidian, Seraphinite, Color-Change Diaspore, Boulder Opal, Hackmanite Tenebrescence, 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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ID: 4246251 pcs
thumb image of 1.1ct Trillion Facet Violet Blue Tanzanite (ID: 424625)
1.06 ct Tanzanite
7.2 x 6.8 mm
$ 122.41
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ID: 4543002 pcs
thumb image of 1.9ct Oval Facet Orange Fire Opal (ID: 454300)
1.87 ct Fire Opal
9.1 x 7.1 mm
$ 49.26
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ID: 4539271 pcs
thumb image of 1.1ct Pear Facet Green/Pink Color-Change Diaspore (ID: 453927)
1.09 ct Color-Change Diaspore
10.8 x 5 mm
$ 34.88
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ID: 4211852 pcs
thumb image of 2.1ct Trillion Facet Violet Blue Tanzanite (ID: 421185)
2.14 ct Tanzanite
7.4 x 7 mm
$ 248.65
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ID: 3453731 pcs
thumb image of 15.9ct Carved Fish Pink Rose Quartz (ID: 345373)
15.86 ct Rose Quartz
26.7 x 14.3 mm
$ 18.40
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ID: 3434631 pcs
thumb image of 11.9ct Carved Rose with Hole Gold Brown Tiger's Eye (ID: 343463)
11.92 ct Tiger's Eye
15.8 x 15.7 mm
$ 14.30
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ID: 2068509 pcs
thumb image of 2.3ct Round Facet Multicolor Andalusite (ID: 206850)
2.34 ct Andalusite
4.1 mm
$ 105.30
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ID: 4381394 pcs
thumb image of 1.8ct Oval Facet Violet Blue Tanzanite (ID: 438139)
1.75 ct Tanzanite
5.9 x 3.8 mm
$ 113.75
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ID: 4170301 pcs
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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ID: 3207514 pcs
thumb image of 13ct Drilled Sphere Silver Pink Pearl (ID: 320751)
13.01 ct Pearl
7.8 mm
$ 71.55
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ID: 3776301 pcs
thumb image of 31.3ct Cushion Cabochon Multicolor Ammolite (ID: 377630)
31.31 ct Ammolite
28.5 x 18.7 mm
$ 1181.64
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ID: 3628561 pcs
thumb image of 6.4ct Pear Cabochon Gold Sheen Obsidian (ID: 362856)
6.42 ct Obsidian
18.3 x 10.6 mm
$ 6.42
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ID: 2848041 pcs
thumb image of 6.1ct Trillion Cabochon Multicolor Ammolite (ID: 284804)
6.14 ct Ammolite
16.2 x 14.7 mm
$ 141.22
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ID: 4474564 pcs
thumb image of 77.8ct Drilled Sphere Green Seraphinite (ID: 447456)
77.78 ct Seraphinite
14.2 mm
$ 116.67
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ID: 3338251 pcs
thumb image of 68.1ct Oval Cabochon Grayish Blue Pietersite (ID: 333825)
68.06 ct Pietersite
47 x 29.4 mm
$ 272.24
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ID: 3781971 pcs
thumb image of 12ct Cushion-Cut Violet Blue Tanzanite (ID: 378197)
12.03 ct Tanzanite
13.1 x 12.8 mm
$ 6123.75
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ID: 4166701 pcs
thumb image of 4ct Oval Cabochon Cream Star Moonstone (ID: 416670)
3.97 ct Star Moonstone
11.2 x 9.3 mm
$ 15.88
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ID: 3951584 pcs
thumb image of 7.3ct Asscher Cut Pink Rose Quartz (ID: 395158)
7.26 ct Rose Quartz
7.6 x 7.6 mm
$ 36.30
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ID: 4674711 pcs
thumb image of 0.8ct Round Facet White Blue Rainbow Moonstone (ID: 467471)
0.77 ct Rainbow Moonstone
6 mm
$ 11.83
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ID: 4672701 pcs
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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ID: 2169221 pcs
thumb image of 10ct Fancy Cabochon Multicolor Fire Agate (ID: 216922)
10.02 ct Fire Agate
26.4 x 9.7 mm
$ 120.24
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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, many phenomenal gems are surprisingly very affordable. Some examples of gemstone phenomena and popular gem types known to exhibit phenomenal qualities include:

  • Adularescence (Opalescence): Moonstone, Opal, Rose Quartz, Moonstone, Rainbow Moonstone
  • Aventurescence (Schiller): Aventurine, Sunstone
  • Cat's Eye Chatoyancy: Chrysoberyl Cat's Eye, Actinolite, Tourmaline
  • Star Chatoyancy (Asterism): Garnet, Sapphire, Lemon Quartz
  • Simple Chatoyancy: Tiger's Eye, Hawk's Eye, Charoite, Pietersite,
  • Iridescence: Ammolite, Rainbow Pyrite. Fire Agate
  • Labradorescence: Labradorite, Spectrolite, Moonstone, Rainbow Moonstone
  • Color Change: Diaspore, Garnet, Sapphire
  • Play of Color: Precious Opal, Black Opal, Chocolate Opal
  • Orient: Pearl, Mother of Pearl
  • Pleochroism: Andalusite, Tanzanite, Kyanite
  • Tenebrescence: Hackmanite, Tugtupite

 

 

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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