18 mm Round Gemstones: Natural Rubies, Sapphires, Garnets, Emeralds, Tourmalines, Amethysts in 18mm Round
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Explore our stunning collection of 18 mm round gemstones, featuring a variety of 18 mm gems and 18 mm stones with exceptional carat weight. Whether you're looking for round garnets, round sapphires, round rubies, or round emeralds, our 18 mm round cuts offer unparalleled brilliance and beauty, perfect for all your fine jewelry creations. 2. Dive into the world of 18 mm round gemstones, where you'll find a range of 18 mm round stones, gems 18 mm, and expertly crafted round brilliant cuts. Our collection includes premium 18 mm round diamonds, round sapphires, round rubies, and round emeralds, all designed to deliver stunning clarity, color, and carat weight for your jewelry collection. |
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Bi-color
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Black
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Blue 18 mm Round Gemstones
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Brown 18 mm Round Gemstones
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Golden
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Gray 18 mm Round Gemstones
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Green 18 mm Round Gemstones
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Multicolor 18 mm Round Gemstones
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Orange
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Pink
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Purple
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Red
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Turquoise
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Violet 18 mm Round Gemstones
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White 18 mm Round Gemstones
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Yellow 18 mm Round Gemstones
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Single |
Pairs |
Lots |
Faceted |
Cabochons |
| ID: | 598911 |
| Weight: | 16.29ct |
| Size: | 18 mm (calibrated) |
| Clarity: | VVS |
| Content: | 1 pc |
| Price: | $ 78.05 |
| Item in Stock | |
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| ID: | 602194 |
| Weight: | 15.94ct |
| Size: | 18 mm (calibrated) |
| Clarity: | VVS |
| Content: | 1 pc |
| Price: | $ 77.44 |
| Item in Stock | |
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| ID: | 625471 |
| Weight: | 16.42ct |
| Size: | 18 mm (calibrated) |
| Clarity: | VVS |
| Content: | 1 pc |
| Price: | $ 86.90 |
| Item in Stock | |
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| ID: | 671202 |
| Weight: | 15.26ct |
| Size: | 18 mm (calibrated) |
| Clarity: | Translucent |
| Content: | 1 pc |
| Price: | $ 32.81 |
| Item in Stock | |
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| ID: | 714392 |
| Weight: | 27.45ct |
| Size: | 18 mm (calibrated) |
| Clarity: | VVS-VS |
| Content: | 1 pc |
| Price: | $ 247.05 |
| Item in Stock | |
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| ID: | 503802 |
| Weight: | 17.43ct |
| Size: | 18 mm (calibrated) |
| Clarity: | VVS |
| Content: | 1 pc |
| Price: | $ 69.02 |
| Item in Stock | |
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| ID: | 406641 |
| Weight: | 24.65ct |
| Size: | 18 mm (calibrated) |
| Clarity: | Translucent |
| Content: | 1 pc |
| Price: | $ 59.16 |
| Item in Stock | |
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| ID: | 601427 |
| Weight: | 15.46ct |
| Size: | 18 mm (calibrated) |
| Clarity: | VVS-VS |
| Content: | 1 pc |
| Price: | $ 75.10 |
| Item in Stock | |
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| ID: | 711137 |
| Weight: | 18.58ct |
| Size: | 18 mm (calibrated) |
| Clarity: | VVS |
| Content: | 1 pc |
| Price: | $ 156.07 |
| Item in Stock | |
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| ID: | 712390 |
| Weight: | 19.21ct |
| Size: | 18 mm (calibrated) |
| Clarity: | VS |
| Content: | 1 pc |
| Price: | $ 161.36 |
| Item in Stock | |
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| ID: | 391643 |
| Weight: | 34.12ct (total) |
| Size: | 18 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 2 pcs |
| Price: | $ 96.84 |
| Item in Stock | |
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| ID: | 491707 |
| Weight: | 58.13ct (total) |
| Size: | 18 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 2 pcs |
| Price: | $ 68.29 |
| Item in Stock | |
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| ID: | 427976 |
| Weight: | 15.09ct |
| Size: | 18 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 69.72 |
| Item in Stock | |
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| ID: | 711143 |
| Weight: | 19.78ct |
| Size: | 18 mm (calibrated) |
| Clarity: | VVS |
| Content: | 1 pc |
| Price: | $ 166.15 |
| Item in Stock | |
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| ID: | 711029 |
| Weight: | 19.14ct |
| Size: | 18 mm (calibrated) |
| Clarity: | VVS |
| Content: | 1 pc |
| Price: | $ 160.78 |
| Item in Stock | |
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| ID: | 711140 |
| Weight: | 18.92ct |
| Size: | 18 mm (calibrated) |
| Clarity: | VVS |
| Content: | 1 pc |
| Price: | $ 158.93 |
| Item in Stock | |
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| ID: | 650679 |
| Weight: | 11.67ct |
| Size: | 18 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 32.90 |
| Item in Stock | |
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| ID: | 602847 |
| Weight: | 14.85ct |
| Size: | 18 mm (calibrated) |
| Clarity: | VVS |
| Content: | 1 pc |
| Price: | $ 71.94 |
| Item in Stock | |
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| ID: | 711023 |
| Weight: | 19.39ct |
| Size: | 18 mm (calibrated) |
| Clarity: | VVS |
| Content: | 1 pc |
| Price: | $ 162.88 |
| Item in Stock | |
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| ID: | 491705 |
| Weight: | 48.28ct (total) |
| Size: | 18 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 2 pcs |
| Price: | $ 56.72 |
| Item in Stock | |
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| ID: | 711146 |
| Weight: | 18.08ct |
| Size: | 18 mm (calibrated) |
| Clarity: | VVS |
| Content: | 1 pc |
| Price: | $ 151.87 |
| Item in Stock | |
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| ID: | 602734 |
| Weight: | 14.35ct |
| Size: | 18 mm (calibrated) |
| Clarity: | VVS |
| Content: | 1 pc |
| Price: | $ 69.52 |
| Item in Stock | |
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| ID: | 669080 |
| Weight: | 17.63ct |
| Size: | 18 mm (calibrated) |
| Clarity: | Transparent |
| Content: | 1 pc |
| Price: | $ 380.81 |
| Item in Stock | |
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| ID: | 711022 |
| Weight: | 17.29ct |
| Size: | 18 mm (calibrated) |
| Clarity: | VVS |
| Content: | 1 pc |
| Price: | $ 145.24 |
| Item in Stock | |
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| ID: | 687678 |
| Weight: | 12.37ct |
| Size: | 18 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 36.52 |
| Item in Stock | |
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| ID: | 658420 |
| Weight: | 10.45ct |
| Size: | 18 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 37.62 |
| Item in Stock | |
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| ID: | 712831 |
| Weight: | 18.67ct |
| Size: | 18 mm (calibrated) |
| Clarity: | VVS-VS |
| Content: | 1 pc |
| Price: | $ 156.83 |
| Item in Stock | |
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| ID: | 711630 |
| Weight: | 18.89ct |
| Size: | 18 mm (calibrated) |
| Clarity: | VVS |
| Content: | 1 pc |
| Price: | $ 158.68 |
| Item in Stock | |
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| ID: | 552037 |
| Weight: | 11.91ct |
| Size: | 18 mm (calibrated) |
| Clarity: | Translucent |
| Content: | 1 pc |
| Price: | $ 31.44 |
| Item in Stock | |
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| ID: | 721363 |
| Weight: | 24.27ct |
| Size: | 19 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 29.12 |
| Item in Stock | |
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| ID: | 491702 |
| Weight: | 48.88ct (total) |
| Size: | 18 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 2 pcs |
| Price: | $ 57.42 |
| Item in Stock | |
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| ID: | 564824 |
| Weight: | 13.11ct |
| Size: | 18 mm (calibrated) |
| Clarity: | Translucent |
| Content: | 1 pc |
| Price: | $ 51.91 |
| Item in Stock | |
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| ID: | 712395 |
| Weight: | 18.88ct |
| Size: | 18 mm (calibrated) |
| Clarity: | VVS |
| Content: | 1 pc |
| Price: | $ 158.59 |
| Item in Stock | |
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| ID: | 427977 |
| Weight: | 15.19ct |
| Size: | 18 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 70.18 |
| Item in Stock | |
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| ID: | 712836 |
| Weight: | 19.33ct |
| Size: | 18 mm (calibrated) |
| Clarity: | VVS-VS |
| Content: | 1 pc |
| Price: | $ 162.37 |
| Item in Stock | |
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| ID: | 406636 |
| Weight: | 21.98ct |
| Size: | 18 mm (calibrated) |
| Clarity: | Translucent |
| Content: | 1 pc |
| Price: | $ 58.03 |
| Item in Stock | |
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| ID: | 717165 |
| Weight: | 13.25ct |
| Size: | 18 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 25.28 |
| Item in Stock | |
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| ID: | 712833 |
| Weight: | 19.88ct |
| Size: | 18 mm (calibrated) |
| Clarity: | VVS-VS |
| Content: | 1 pc |
| Price: | $ 166.99 |
| Item in Stock | |
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| ID: | 371914 |
| Weight: | 18.40ct |
| Size: | 18 mm (calibrated) |
| Clarity: | Translucent |
| Content: | 1 pc |
| Price: | $ 109.30 |
| Item in Stock | |
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| ID: | 712832 |
| Weight: | 19.76ct |
| Size: | 18 mm (calibrated) |
| Clarity: | VVS-VS |
| Content: | 1 pc |
| Price: | $ 165.98 |
| Item in Stock | |
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| ID: | 712391 |
| Weight: | 18.19ct |
| Size: | 18 mm (calibrated) |
| Clarity: | VS |
| Content: | 1 pc |
| Price: | $ 152.80 |
| Item in Stock | |
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| ID: | 406635 |
| Weight: | 23.98ct |
| Size: | 18 mm (calibrated) |
| Clarity: | Translucent |
| Content: | 1 pc |
| Price: | $ 63.31 |
| Item in Stock | |
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| ID: | 712389 |
| Weight: | 19.60ct |
| Size: | 18 mm (calibrated) |
| Clarity: | VVS-VS |
| Content: | 1 pc |
| Price: | $ 164.64 |
| Item in Stock | |
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| ID: | 391653 |
| Weight: | 29.41ct (total) |
| Size: | 18 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 2 pcs |
| Price: | $ 83.46 |
| Item in Stock | |
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| ID: | 406640 |
| Weight: | 23.89ct |
| Size: | 18 mm (calibrated) |
| Clarity: | Translucent |
| Content: | 1 pc |
| Price: | $ 63.07 |
| Item in Stock | |
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| ID: | 711030 |
| Weight: | 18.76ct |
| Size: | 18 mm (calibrated) |
| Clarity: | VVS |
| Content: | 1 pc |
| Price: | $ 157.58 |
| Item in Stock | |
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| ID: | 717023 |
| Weight: | 15.97ct |
| Size: | 18 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 30.47 |
| Item in Stock | |
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FAQs
What does "18 mm" mean when referring to gemstones?
"18 mm" indicates the diameter of a gemstone, defining the size of pieces such as 18 mm gems, 18 mm gemstones, or 18 mm round gemstones. This measurement is crucial for understanding the overall impact and carat weight of the stone.
How do 18 mm round cuts enhance a gemstone's beauty?
18 mm round cuts, especially those in a Round brilliant cut style, maximize a gemstone’s sparkle and light performance. These precise cuts are applied to 18 mm round stones, gemstone 18 mm round pieces, and gemstones 18 mm round items, ensuring exceptional brilliance.
What types of stones are available in the 18 mm category?
Our collection includes a variety of options such as 18 mm gems, 18 mm gemstones, and 18 mm round gemstones. You can find round 18 mm gemstones, round 18 mm stones, and round gemstones 18 mm, which include stunning examples like round Diamond, round Sapphire, round Ruby, and round Emerald.
How does carat weight relate to an 18 mm diameter gemstone?
The carat weight of a gemstone is closely linked to its physical size, such as an 18 mm diameter. Larger 18 mm stones and 18 mm round gemstones typically carry a higher carat weight, reflecting their size and overall value.
What role does Gemology play in our collection?
Gemology ensures that each piece, whether it’s a gemstone 18 mm round or gemstones 18 mm round, meets strict quality standards. Experts evaluate factors like the Round brilliant cut and Carat weight to certify the beauty and authenticity of 18 mm round stones, gems 18 mm, and similar pieces.
What do the terms "gems round" and "gems stones" imply in this context?
The terms gems round and gems stones refer to any gemstone that has been expertly cut into a round shape. In our collection, these terms emphasize the focus on 18 mm round designs and include items like gemstone 18 mm round, gemstones 18 mm round, and round 18 mm gemstones.
GemSelect Certified Store Reviews
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I have found GemSelect to have the best selections of quality stones at a reasonable price. I like the packaging and the report availability.
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Very good Hoping you will increase your inventory especially in the 6mmThanks
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Appreciated the selection. Jadeite is hard to find under $100. Website has alot of variety.
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IT WAS GREAT SIMPLE I WAS ABLE TO MAKE AN ACCOUNT EASY AND WAS ABLE TO FAVORITE ALL OF MY FINAL SELECTED GEMS, I JUST LOVE IT.
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great experience
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The purchasing process is fairly quick and straightforward and for me user friendly so it probably took more or less than 3 minutes to purchase and pay for the items. I wish there was a discount offer for multiple items to encourage us buyers to purchase more an incentive and add more sales in your end. Besides that, it's been a great purchasing experience and will continue to shop as I am a repeat customer and have bought from your store many times before. Thank you.
