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Home Gemstones 20 mm Round Gemstones

20 mm Round Gemstones: Topaz, Opals, Garnets, Sapphires, Rubies, Calibrated 20 mm Round Gems

20 mm Round Gemstones Weight
20 mm Round Gemstones Size
20 mm Round Gemstones Clarity
20 mm Round Gemstones Price

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25.91ct Violet Amethyst, Round, VVS

20 mm (calibrated)

$ 150.54

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38.51ct Green Fluorite, Round, Transparent

20 mm (calibrated)

$ 70.32

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28.16ct Green Aventurine, Round, Opaque

20 mm (calibrated)

$ 34.25

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25.03ct Yellow Quartz, Round, VS

20 mm (calibrated)

$ 87.76

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23.46ct Violet Amethyst, Round, VVS

20 mm (calibrated)

$ 136.30

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36.10ct Brown Tiger'S Eye, Round, Opaque

20 mm (calibrated)

$ 42.19

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24.56ct Green Aventurine, Round, Opaque

20 mm (calibrated)

$ 24.89

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29.03ct Violet Amethyst, Round, VVS

20 mm (calibrated)

$ 168.66

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25.46ct Violet Amethyst, Round, VVS

20 mm (calibrated)

$ 202.87

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25.66ct Violet Amethyst, Round, VVS

20 mm (calibrated)

$ 178.90

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26.62ct Violet Amethyst, Round, VVS-VS

20 mm (calibrated)

$ 185.60

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23.68ct Green Aventurine, Round, Opaque

20 mm (calibrated)

$ 28.79

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33.63ct Gray Hematite, Round, Opaque

20 mm (calibrated)

$ 30.96

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22.21ct Violet Amethyst, Round, VVS-VS

20 mm (calibrated)

$ 154.84

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24.86ctw Multicolor Labradorite, Round, Translucent

20 mm (calibrated)

$ 54.47

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25.40ctw Multicolor Labradorite, Round, Translucent

20 mm (calibrated)

$ 55.66

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26.56ct Violet Amethyst, Round, VVS

20 mm (calibrated)

$ 185.17

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24.81ct Violet Amethyst, Round, VVS

20 mm (calibrated)

$ 172.97

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37.62ct Brown Tiger'S Eye, Round, Opaque

20 mm (calibrated)

$ 47.96

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36.73ct Brown Tiger'S Eye, Round, Opaque

20 mm (calibrated)

$ 51.50

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34.68ct Multicolor Agate, Round, Opaque

20 mm (calibrated)

$ 32.82

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23.26ct Green Aventurine, Round, Opaque

20 mm (calibrated)

$ 28.29

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66.33ctw Gray Hematite, Round, Opaque

20 mm (calibrated)

$ 64.67

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32.21ct Gray Hematite, Round, Opaque

20 mm (calibrated)

$ 21.17

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Why Buy 20 Mm Round Gemstones from GemSelect?

GemSelect Certified Store Reviews

GemSelect: Over 22 Years in the Gemstone Business! Thank you for trusting us with your purchase!

Overall Rating -> 10 star ratings

The website has a good selection, the interface is very intuitive.

Posted By PhoenixFeatherJewelry in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

good navigation and simple interface.

Posted By Dave in April, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

Very easy to navigate with a great selection.

Posted By Bar181 in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Love the precise descriptions and calibrations of hte loose gemstones. Would like to have seen more variety in the size gem I was looking for.

Posted By RenoRose in January, 2026
Source: Bizrate

Overall Rating -> 7 star ratings

easy interface for a pricless buy

Posted By Zeak in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Web site is very simple to navigate Selection is terrific

Posted By ToRa.62 in April, 2026
Source: Bizrate
Enlarged Gemstone Image