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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (10063): 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: 4514651 pcs
thumb image of 17.4ct Oval Facet Pink Rose Quartz (ID: 451465)
17.36 ct Rose Quartz
19.6 x 16.6 mm
$ 34.72
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ID: 35186410 pcs
thumb image of 1.9ct Heart Facet Bluish White Rainbow Moonstone (ID: 351864)
1.94 ct Rainbow Moonstone
4 x 3.9 mm
$ 38.80
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ID: 3111181 pcs
thumb image of 1.7ct Pear Facet Multicolor Opal (ID: 311118)
1.66 ct Opal
12.2 x 9 mm
$ 66.40
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ID: 1483471 pcs
thumb image of 1.6ct Oval Facet Bluish Violet Tanzanite (ID: 148347)
1.55 ct Tanzanite
7.3 x 5.5 mm
$ 349.50
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ID: 4540821 pcs
thumb image of 0.7ct Cushion-Cut Green/Pink Color-Change Diaspore (ID: 454082)
0.68 ct Color-Change Diaspore
5.6 x 4.8 mm
$ 21.76
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ID: 3934712 pcs
thumb image of 9.7ct Asscher Cut Pink Rose Quartz (ID: 393471)
9.74 ct Rose Quartz
10.6 x 10.5 mm
$ 48.70
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ID: 3668751 pcs
thumb image of 1.6ct Trillion Facet Reddish Orange Fire Opal (ID: 366875)
1.57 ct Fire Opal
8.9 x 8.9 mm
$ 61.51
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ID: 29788120 pcs
thumb image of 3.4ct Square Facet Blue White Rainbow Moonstone (ID: 297881)
3.39 ct Rainbow Moonstone
3.1 x 3 mm
$ 88.14
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ID: 4495772 pcs
thumb image of 1.3ct Oval Facet Orange Fire Opal (ID: 449577)
1.27 ct Fire Opal
8 x 6.1 mm
$ 34.02
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ID: 4211912 pcs
thumb image of 2.1ct Trillion Facet Violet Blue Tanzanite (ID: 421191)
2.11 ct Tanzanite
7.3 x 7.2 mm
$ 245.16
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ID: 3912631 pcs
thumb image of 69.5ct Pear Cabochon Gold Sheen Obsidian (ID: 391263)
69.50 ct Obsidian
41.1 x 33.6 mm
$ 208.50
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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: 3412504 pcs
thumb image of 1.1ct Pear Facet Blue White Rainbow Moonstone (ID: 341250)
1.10 ct Rainbow Moonstone
4.9 x 4.8 mm
$ 18.70
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ID: 3258111 pcs
thumb image of 20.6ct Oval Cabochon Cream Star Moonstone (ID: 325811)
20.62 ct Star Moonstone
17.2 x 15.1 mm
$ 82.48
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ID: 32368520 pcs
thumb image of 8.2ct Oval Facet Orangey Brownish Andalusite (ID: 323685)
8.19 ct Andalusite
5.8 x 4.1 mm
$ 409.50
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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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ID: 4546025 pcs
thumb image of 1.6ct Round Facet Green/Pink Color-Change Diaspore (ID: 454602)
1.56 ct Color-Change Diaspore
4.1 mm
$ 49.92
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ID: 4143358 pcs
thumb image of 1.6ct Pear Facet Violet Blue Tanzanite (ID: 414335)
1.57 ct Tanzanite
5 x 3.1 mm
$ 54.95
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ID: 4506994 pcs
thumb image of 2ct Oval Facet Orange Fire Opal (ID: 450699)
2.02 ct Fire Opal
7.1 x 5.1 mm
$ 54.10
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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: 4338351 pcs
thumb image of 12.9ct Cushion Cabochon Gold Sheen Obsidian (ID: 433835)
12.89 ct Obsidian
25.7 x 14.2 mm
$ 12.89
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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