Phenomenal Gemstones: Loose Gems with Optical Phenomena; GemSelect

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.

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Gemstones A-Z

Buy Phenomenal Gemstones

0.73 ct Green Sphene, 6.1 x 4.6 mm Oval Cut From Sri Lanka

0.7 carat Blue Sapphire, Diamond-Cut loose Sapphire from Madagascar, Natural Gem, 5.5 mm

4.94 carat Pear Concave Cut Mystic Quartz, loose Certified Mystic Quartz from Brazil, Natural Gem, 14.2 x 10.2 mm

0.42 ct Loose Pink Sapphire, 6.1 x 4.4 mm Odd Shaped From Tanzania

13.2 carat Oval Star Garnet, loose Certified Star Garnet from India, Natural Untreated Gem, 17.4 x 9.5 mm

0.34 carat Blue Kyanite, Round loose Kyanite from Nepal, Natural Untreated Gem, 4.2 mm

34.01 ct Oval Checkerboard Labradorite, 33.9 x 20.4 mm From Madagascar

6.27 ct Carved Prehnite, 16.9 x 11 mm From South Sea

24.5 ct Loose Violet Lepidolite, 38 x 9.1 mm Pencil Cut From the United States

1.22 ct Octagon Cut Color-Change Diaspore, 9.9 x 4.4 mm From Turkey

21.95 carat Pear Fossil Coral, loose Certified Fossil Coral from Indonesia, Natural Untreated Gems, 20.4 x 13.3 mm

3.62 carat Oval Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gems, 6 x 4.1 mm

5.22 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 13.8 x 10 mm

1.2 carat Orange Hessonite Garnet, Pear Shape loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 8 x 5.6 mm

0.88 ct Octagon Cut Color-Change Diaspore, 6.7 x 4.6 mm From Turkey

7.01 ct Black Spinel, 9.2 mm Round Rose Cut From Thailand

6.67 ct Cushion Pietersite, 18.3 x 9 mm From Namibia

3.14 carat White Zircon, Diamond-Cut loose Zircon from Cambodia, Natural Gems, 7 mm

0.92 carat Square Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 4.1 x 4.1 mm

26.64 ct Yellow Quartz, 19.3 x 19.1 mm Cushion Checkerboard From Brazil

1.18 ct Oval Chrysoberyl Cat's Eye, 5.3 x 5.1 mm From Sri Lanka

2.32 ct Cushion Cut Peridot, 8.1 x 7.2 mm From Myanmar

2.94 carat Sky Blue Topaz, Oval loose Topaz from Brazil, Natural Gems, 5 x 3.2 mm

3.81 carat White Zircon, Diamond-Cut loose Zircon from Myanmar, Natural Gems, 6.8 mm

1.17 ct Oval Chocolate Opal, 9.9 x 6.7 mm From Ethiopia

0.85 carat Orange Hessonite Garnet, Round loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 5.5 mm

1.05 ct Blue Kyanite, 7 x 5 mm Oval Cut From Nepal

5.09 ct Asscher Cut Rose Quartz, 8.7 x 8.7 mm From South Africa

0.67 carat Pear Shape Peridot, loose Certified Peridot from China, Natural Untreated Gem, 6.8 x 4.8 mm

4.73 carat White Zircon, Diamond-Cut loose Zircon from Myanmar, Natural Gems, 7.7 mm

3.65 carat White Zircon, Diamond-Cut loose Zircon from Colombia, Natural Gems, 7 mm

6.3 carat Swiss Blue Topaz, Round loose Topaz from Brazil, Natural Gems, 9.2 mm

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