Phenomenal Gemstones: Loose Gems with Optical Phenomena; GemSelect

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.

Gemstone Information

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Overall Rating -> 8

I like to use GemSelect for finding calibrated sizes of gemstones. I purchased sapphires a few years ago and found the quality to be outstanding so I went ahead and purchased some more today (different) and some really unique moonstone. I'm opening a jewelry busy soon and so accurate gemstone sizes, quality, and reliability as a supplier is really important to me. Gemselect seems to fill all those requirements.

Posted By J in November, 2022

Source: Bizrate

Overall Rating -> 10

Beautiful selection of gems! Surprised and happy that I was able find a gem in my price range.

Posted By Garnet T in January, 2023

Source: Bizrate

Overall Rating -> 10

Excellent experience!

Posted By Steph in April, 2023

Source: Bizrate

Overall Rating -> 9

GemSelect has a fantastic assortment of Semi-precious stones. I have not found any other web site with the variety you have.

Posted By RobDill in August, 2023

Source: Bizrate

Overall Rating -> 9

Not easy enough to buy by exact size, and many stones aren't carbechon curved shape on top

Posted By Erick in July, 2023

Source: Bizrate

Overall Rating -> 8

Great selection, good prices and beautiful, simple user interface.

Posted By Swaggermuffinz in October, 2022

Source: Bizrate

Overall Rating -> 7

I love this site, I learn a lot from it. I like the selection and quality, I can't wait to use them in my work. The specimens are phenomenal. Look forward to more business from me in the future..

Posted By Ophii in January, 2023

Source: Bizrate

Overall Rating -> 10

Easy to maneuver, could find what I was looking for. Prices very good. Enjoyed my shopping experience.

Posted By Sadie in April, 2023

Source: Bizrate

Overall Rating -> 10

I really like how many options there are and the fact that each stone has multiple photos and clearly explains where they came from and their size and quality

Posted By Shaberu in December, 2022

Source: Bizrate

Overall Rating -> 10

I find the website user friendly.

Posted By Becky in August, 2023

Source: Bizrate

Overall Rating -> 10

Selection ability was straightforward and easy.

Posted By Dave in May, 2023

Source: Bizrate

Overall Rating -> 10

Everything was perfect, the stone was gorgeous, and delivery was on time. I cannot add anything else.

Posted By DesertDweller in March, 2023

Source: Bizrate

Overall Rating -> 10

Problem loading new arrivals from the email link

Posted By Oceansidelady in March, 2023

Source: Bizrate

Overall Rating -> 10

My purchases have been delivered as said and I have been happy with the products

Posted By Rbuddy in December, 2022

Source: Bizrate

Overall Rating -> 10

After working with and polishing low-grade, rough fire-agate, only to be disappointed, this shop was nirvana. The costs of some gems might seem high, but I have easily spent the same amount rough polishing lousy material only to get a few hints of fire. If you want Fire-agates, BUY the agates you want. These are excellent specimens and are worth considering.

Posted By Jim in October, 2022

Source: Bizrate

Selected Gemstones

Gemstones A-Z

Buy Phenomenal Gemstones

1.91 ct Round Tiger's Eye, 7.6 mm From Thailand

2.41 ct Round Cut Andalusite, 4 mm From Brazil

16.85 ct Oval Rose Quartz, 16.3 x 14.7 mm From South Africa

1.68 ct Oval Opal, 8.9 x 6.9 mm From Ethiopia

18.75 ct Green Opal, 21.8 x 17.5 mm Oval Cut From Brazil

0.2 ct Octagon Cut Iolite, 5.2 x 3.1 mm From Madagascar

9.31 ct Carved Rose Quartz, 20.4 x 13.9 mm From Brazil

1.89 ct Blue Tanzanite, 4.9 x 3 mm Pear Cut From Tanzania

0.85 ct Cushion Cut Color-Change Diaspore, 5.7 x 4.8 mm From Turkey

12.31 ct Round Quartz Cat's Eye, 10.9 mm From India

1.57 ct Blue Tanzanite, 5 x 3.1 mm Pear Cut From Tanzania

33.02 ct White Opal, 30 x 21.2 mm Pear Cut From Australia

15.79 ct Oval Fire Opal, 22.3 x 14.9 mm From Mexico

1.45 ct Fancy Opal, 10.7 x 6.8 mm From Ethiopia

1.63 ct Blue Tanzanite, 5.1 x 3.1 mm Pear Cut From Tanzania

1.46 ct Oval Sillimanite Cat's Eye, 7.7 x 4.4 mm From Madagascar

1.36 ct Orange Moonstone, 6.1 x 6 mm Square Cut From India

48.7 ct Round Tiger's Eye Matrix, 28.4 mm From Mexico

25.78 ct Round Checkerboard Labradorite, 20.2 mm From Madagascar

4.23 ct Trillion Pietersite, 13.5 x 12.8 mm From Namibia

1.51 ct Oval Cut Opal, 10.6 x 8 mm From Australia

1.31 ct Oval Sillimanite Cat's Eye, 5.9 x 5.5 mm From Madagascar

0.93 ct Octagon Cut Color-Change Diaspore, 6.5 x 5.3 mm From Turkey

2.29 ct Round Cat's Eye Scapolite, 7.9 mm From Madagascar

0.91 ct Octagon Cut Color-Change Diaspore, 6.1 x 4.5 mm From Turkey

19.06 ct Fancy Ammolite, 24.4 x 17.6 mm From Canada

2.73 ct Oval Tiger's Eye, 8 x 6 mm From Thailand

28.81 ct Oval Pietersite, 30 x 22.1 mm From Namibia

18.59 ct Baguette Tiger's Eye, 19.6 x 14.6 mm From Thailand

5.91 ct Octagon Cut Rose Quartz, 10.9 x 10.6 mm From South Africa

2.45 ct Pear Tiger's Eye, 9.7 x 9.5 mm From Thailand

579.55 ct Oval Star Rose Quartz, 57 x 45.8 mm From South Africa

Phenomenal Gemstones

Gemstone Information