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| ID: 4382922 pcs |
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| 26.13 ct Spinel |
| 18.1 x 13.2 mm |
| $ 78.39 |
| Item in Stock |
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| ID: 3287561 pcs |
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| 15.59 ct Rose Quartz |
| 17.9 x 13.1 mm |
| $ 18.71 |
| Item in Stock |
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| ID: 4691401 pcs |
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| 7.25 ct Jasper |
| 17.9 x 12.9 mm |
| $ 5.29 |
| Item in Stock |
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| ID: 4731011 pcs |
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| 12.41 ct Labradorite |
| 18 x 13 mm |
| $ 24.82 |
| Item in Stock |
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| ID: 3288381 pcs |
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| 18.30 ct Rose Quartz |
| 17.9 x 13.2 mm |
| $ 21.96 |
| Item in Stock |
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| ID: 4734201 pcs |
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| 12.30 ct Labradorite |
| 18.3 x 13.2 mm |
| $ 24.60 |
| Item in Stock |
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| ID: 4382851 pcs |
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| 13.71 ct Spinel |
| 18.1 x 13.1 mm |
| $ 41.13 |
| Item in Stock |
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| ID: 4841901 pcs |
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| 9.35 ct Amazonite |
| 18 x 13.1 mm |
| $ 9.91 |
| Item in Stock |
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| ID: 4724441 pcs |
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| 14.16 ct Strawberry Quartz |
| 18.2 x 13.2 mm |
| $ 99.12 |
| Item in Stock |
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| ID: 3825641 pcs |
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| 14.22 ct Jadeite |
| 17.7 x 13.2 mm |
| $ 42.66 |
| Item in Stock |
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| ID: 4841921 pcs |
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| 8.66 ct Amazonite |
| 17.9 x 13 mm |
| $ 9.18 |
| Item in Stock |
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| ID: 4731071 pcs |
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| 11.39 ct Labradorite |
| 18 x 13.2 mm |
| $ 22.78 |
| Item in Stock |
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| ID: 4731051 pcs |
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| 11.20 ct Labradorite |
| 18.2 x 13 mm |
| $ 22.40 |
| Item in Stock |
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| ID: 3920701 pcs |
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| 15.70 ct Rhodochrosite |
| 17.9 x 13.1 mm |
| $ 31.40 |
| Item in Stock |
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| ID: 3707652 pcs |
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| 25.02 ct Jasper |
| 18 x 13.1 mm |
| $ 25.02 |
| Item in Stock |
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| ID: 3224361 pcs |
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| 9.15 ct Howlite |
| 18.1 x 13.1 mm |
| $ 22.88 |
| Item in Stock |
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| ID: 3920551 pcs |
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| 15.86 ct Rhodochrosite |
| 17.9 x 12.9 mm |
| $ 31.72 |
| Item in Stock |
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| ID: 4885552 pcs |
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| 19.65 ct Jasper |
| 18.1 x 13.1 mm |
| $ 11.00 |
| Item in Stock |
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| ID: 4882921 pcs |
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| 10.81 ct Jasper |
| 18.1 x 12.9 mm |
| $ 6.05 |
| Item in Stock |
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| ID: 2735241 pcs |
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| 9.74 ct Howlite |
| 17.8 x 12.9 mm |
| $ 24.35 |
| Item in Stock |
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| ID: 4712191 pcs |
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| 14.23 ct Star Sunstone |
| 18 x 13.2 mm |
| $ 28.46 |
| Item in Stock |
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Some people by gems by color or price, but for many, it is best to buy gems by shape and size - especially if you're in need of a gem to replace a previous item that was lost or damaged. Calibrated oval shapes, facet cut and cabochon gems available now in 18 x13 mm size range. Shop a wide range of calibrated gemstones by size online at wholesale from GemSelect.
As a general guideline, when it comes to 'calibrated' gems, they are not usually expected to be cut to exact measurements. For calibrated gemstones weighing under one carat, most jewelry settings will accommodate a gem which is within 0.2 mm of the calibrated size in order to fit a standard setting. For gemstones that weigh over one carat, a larger variance is acceptable, often round shape settings will allow 0.3 mm or slightly higher even. This small variance can usually be accommodated for most standard style settings. Round-cut gemstones should also have a greater variance in acceptable size when it comes to calibration; in fact it is usually possible to mount a round stone of any size in the closest standard setting.
