Hackmanite: Buy Hackmanite Gemstones at Affordable Price

Hackmanite is a rare sulfur-rich variety of sodalite and a tenebrescent mineral, which means that it has the ability to change color when exposed to sunlight. This is a process that reverses when the light changes. This phenomenon is also referred to as reversible photochromism. Hackmanite gems are pale to deep violet when first mined, and fade to grayish or greenish-white once exposed to sunlight. However, hackmanite gems from Afghanistan and Myanmar do the opposite and usually change from colorless or creamy-white to pink-red or violet under sunlight.

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Gemstones A-Z

Buy Hackmanite Gems

1.22 carat Orange Sunstone, Oval loose Sunstone from India, Natural Untreated Gem, 8.1 x 6.1 mm

14.98 ct Blue Green Grandidierite, 17.5 x 14.6 mm Oval Cut From Madagascar

0.94 carat Green Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 14.6 x 3.2 mm

2.82 carat Marquise Cut Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 9.9 x 5 mm

0.77 ct Loose Pink Sapphire, 7.3 x 5.9 mm Odd Shaped From Tanzania

1.45 carat White Zircon, Diamond-Cut loose Zircon from Cambodia, Natural Gems, 5 mm

5.38 ct Octagon Cut Smoky Quartz, 13 x 9.9 mm From Brazil

0.7 ct Yellow Beryl, 6.9 x 5.1 mm Oval Cut From Madagascar

21.12 ct Odd Shaped Rainbow Pyrite, 19.6 x 11.3 mm From Russia

1.58 carat Yellow Citrine, Trillion loose Citrine from Brazil, Natural Untreated Gem, 8 x 8 mm

3.41 carat Swiss Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 7 x 5 mm

18.03 ct Trillion Obsidian, 24.1 x 19.9 mm From the United States

0.02 ct Loose Green Diamond, 1.8 mm Diamond Cut From India

1.59 ct Oval Cut Peridot, 7.1 x 5 mm From China

1.91 ct Cushion Cut Peridot, 8.3 x 6.7 mm From Myanmar

10.63 carat Pear Pietersite, loose Certified Pietersite from Namibia, Natural Untreated Gems, 20.2 x 11.7 mm

5.63 carat Yellow Citrine, Marquise Cut loose Citrine from Brazil, Natural Untreated Gem, 20 x 9.8 mm

9.73 ct Carved Prehnite, 15.5 x 10.3 mm From South Africa

0.58 carat London Blue Topaz, Oval loose Topaz from Brazil, Natural Gem, 6.1 x 4 mm

0.8 ct Oval Cut Peridot, 7 x 5.2 mm From China

10.57 carat Ammolite, loose Certified Ammolite from Canada, Natural Gem, 20.6 x 14.1 mm

0.41 ct Oval Chrysoberyl Cat's Eye, 3.6 x 3.4 mm From Sri Lanka

19.79 carat Pear Obsidian, loose Certified Obsidian from the United States, Natural Untreated Gem, 29.1 x 21.3 mm

1.83 ct Green Sphene, 7.3 x 6.6 mm Oval Cut From Sri Lanka

2.16 carat Marquise Cut Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 10.2 x 5.1 mm

1.73 carat Oval Opal, loose Certified Opal from Australia, Natural Untreated Gem, 12.6 x 8.6 mm

15.66 ct Oval Checkerboard Labradorite, 18 x 13.3 mm From Madagascar

14.42 ct Baguette Bloodstone, 18.7 x 9.6 mm From Madagascar

1.42 ct Loose Marquise Labradorite, 10.1 x 5.1 mm From Madagascar

3.78 ct Oval Tiger's Eye, 12.3 x 8.3 mm From Thailand

1.28 carat Pink Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 9.2 x 4.1 mm

45.22 ct Cushion Obsidian, 33.4 x 22.6 mm From Mexico

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