Protektor System Secure Earring Locking Backs Replacement / Post & Back Set
- Available 10 items in stock
Protektor earring backs with matching posts set for the ultimate in security, convenience and comfort! After purchasing the earring back system, you need to have your local jeweler put your Protektor earrings on your earrings and you're ready to go! The positive locking clutch firmly clamps the double notch securely until it is released.
- Approx. weight post / back set (Each):
- 14K Gold: 0.17 DWT (0.26 grams),
- 18K Gold: 0.2 DWT (0.31 grams),
- Platinum: 0.3 DWT (0.47 grams),
- Sterling Silver: 0.148 DWT (0.23 grams).
- Earring Back Pad OD: 6.2 mm,
- 18K palladium white gold is not alloyed with nickel, but with the hypoallergenic metal palladium.
- Post Thickness: .034 In,
- Post Length: .374 In,
- Made in USA.
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In stock items, your order should be shipped within 2-3 business days after order verification and credit approval.
- For non-stock items, it will be made to order for you, the processing time we need to prepare an order for shipping varies.
- Special orders and customized orders, they are dependent on the complexity of the item and will provide an estimated delivery schedule after order verification and credit approval. We will send you an expected shipping time by a follow-up email.
If anything goes beyond expectations, we will send you the expected shipping time via a follow-up email.
Please contact us if you need something expedited or with any questions regarding to shipping .Standard Stone Size and Carat Weight Chart
Since the varying densities of different stone materials and also the varying depths of different cutting styles can result in a significantly different, even between stones with a similar carat weight.
Estimating Weights for Standard Faceted Cut Gemstones
| Rounds |  |
Squares / Pricess |
 |
Ovals |  |
|---|---|---|---|---|---|
| Size | Weight | Size | Weight | Size | Weight |
| 1.6 mm | .02 carat | 3.5 mm | .25 carat | 5 x 3 mm | .25 carat |
| 2 mm | .03 carat | 4 mm | .40 carat | 6 x 4 mm | .5 carat |
| 2.5 mm | .06 carat | 4.5 mm | .50 carat | 7 x 5 mm | 1.0 carat |
| 3 mm | .10 carat | 5 mm | .75 carat | 8 x 6 mm | 1.5 carat |
| 3.5 mm | .16 carat | 5.5 mm | 1.0 carat | 9 x 7 mm | 2.5 carat |
| 4 mm | .25 carat | 6 mm | 1.3 carat | 10 x 8 mm | 3.0 carat |
| 4.5 mm | .33 carat | 6.5 mm | 1.5 carat | 11 x 9 mm | 4.0 carat |
| 5 mm | .50 carat | 7 mm | 2.05 carat | 12 x 10 mm | 5.0 carat |
| 5.5 mm | .65 carat | 8 mm | 2.9 carat | 14 x 10 mm | 6.0 carat |
| 6 mm | .75 carat | 9 mm | 4.4 carat | 14 x 12 mm | 8.0 carat |
| 6.5 mm | 1.0 carat | 9.5 mm | 5.0 carat | 16 x 12 mm | 10.5 carat |
| 7 mm | 1.25 carat | 10 mm | 6.0 carat | 18 x 13 mm | 14.2 carat |
| 8 mm | 2.0 carat | 11 mm | 8.0 carat | ||
| 9 mm | 2.75 carat | 12 mm | 10.35 carat | ||
| 10 mm | 3.5 carat | 13 mm | 13.2 carat | ||
| 11 mm | 4.6 carat | 14 mm | 16.5 carat | ||
| 12 mm | 6.0 carat | 15 mm | 20.25 carat | ||
| 13 mm | 7.75 carat | 16 mm | 24.6 carat | ||
| 14 mm | 9.65 carat | ||||
| 15 mm | 11.85 carat | ||||
| 16 mm | 16 carat | ||||
| 17 mm | 17.25 carat | ||||
| 18 mm | 20.5 carat | ||||
| 19 mm | 24.0 carat | ||||
| 20 mm | 28.0 carat | ||||
| 21 mm | 34.8 carat | ||||
| 22 mm | 41.8 carat | ||||
| 23 mm | 49.8 carat | ||||
| 24 mm | 57.9 carat | ||||
| 25 mm | 68.7 carat |
| Emerald |  |
Pear |  |
Marquis |  |
|---|---|---|---|---|---|
| 6 x 4 mm | .5 carat | 6 x 5 mm | .7 carat | 4 x 2 mm | .10 carat |
| 7 x 5 mm | 1.0 carat | 7 x 5 mm | .75 carat | 5 x 2.5 mm | .25 carat |
| 8 x 6 mm | 1.5 carat | 8 x 5 mm | 1.0 carat | 6 x 3 mm | .30 carat |
| 9 x 7 mm | 2.5 carat | 9 x 6 mm | 1.5 carat | 8 x 4 mm | .75 carat |
| 10 x 8 mm | 3.0 carat | 10 x 7 mm | 2.0 carat | 10 x 5 mm | 1.0 carat |
| 11 x 9 mm | 4.0 carat | 11 x 7 mm | 2.25 carat | 12 x 6 mm | 2.0 carat |
| 12 x 10 mm | 5.0 carat | 12 x 8 mm | 3.0 carat | 14 x 7 mm | 3.0 carat |
| 14 x 10 mm | 6.0 carat | 13 x 9 mm | 3.5 carat | 16 x 8 mm | 4.0 carat |
| 14 x 12 mm | 8.0 carat | 15 x 10 mm | 5.5 carat | 18 x 9 mm | 6.0 carat |
| 16 x 12 mm | 10.5 carat | 16 x 12 mm | 8.6 carat | 20 x 10 mm | 8.5 carat |
| 18 x 13 mm | 14.2 carat | 18 x 13 mm | 12 carat | ||
| 20 x 15 mm | 20.3 carat | 20 x 15 mm | 17.3 carat | ||
| 25 x 18 mm | 52.2 carat | 22 x 15 mm | 18.7 carat | ||
| 25 x 18 mm | 30.6 carat | ||||
| 30 x 22 mm | 54.5 carat |
Mass-produced jewelry settings come in standard gem sizes.
If a gem won’t fit in a standard setting, you should have a setting custom made.