20 mm Round Gemstones: Topaz, Opals, Garnets, Sapphires, Rubies, Calibrated 20 mm Round Gems
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Bi-color
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Black
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Brown 20 mm Round Gemstones
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Golden
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Gray 20 mm Round Gemstones
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Green 20 mm Round Gemstones
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Multicolor 20 mm Round Gemstones
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Orange
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Red
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Turquoise
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Violet 20 mm Round Gemstones
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White 20 mm Round Gemstones
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Yellow 20 mm Round Gemstones
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Why Buy 20 Mm Round Gemstones from GemSelect?
- Trusted Worldwide Since 2003
- Supplying natural gemstones to jewelers and collectors in 120+ countries
- Verified natural gemstones
- View All GemSelect Reviews on Bizrate
- Secure checkout and insured worldwide delivery
- 30-day returns and satisfaction guarantee
GemSelect Certified Store Reviews
GemSelect: Over 22 Years in the Gemstone Business! Thank you for trusting us with your purchase!
Overall Rating -> 10 ![]()
Great selection of gems at a reasonable price
Posted By Curt in July, 2025
Source: Bizrate
Overall Rating -> 10 ![]()
Had a great experience and the prices are great
Posted By BuBx99 in November, 2025
Source: Bizrate
Overall Rating -> 10 ![]()
I am filling a small treasure chest and picked a nice amethyst.
Posted By VinnyD in August, 2025
Source: Bizrate
Overall Rating -> 10 ![]()
All items were delivered on time with all items meeting or exceeding my expectations. Cut, clarity and color were very close to the photos and description.
Posted By Bob D in December, 2025
Source: Bizrate
Overall Rating -> 10 ![]()
Was a good experience.
Posted By Tim in July, 2025
Source: Bizrate
Overall Rating -> 10 ![]()
Good selection prices are reasonable!
Posted By ToRa62 in April, 2026
Source: Bizrate



