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Intro to Setting Gems
Bezel-Set Peridot Earrings
A setting is a metal form into which a gemstone is placed to make jewelry. The metal, known as a mounting or finding in the jewelry trade, may be made of a precious metal like gold, silver or platinum; or some less valuable metal like tungsten steel or titanium. The setting uses claws, prongs, a bezel, or other means to hold the gemstone securely in place. The task of setting a gemstone can be simple or complicated, depending on the size and shape of the gem and the type of setting. The simplest case of setting a gemstone is one where a gemstone in a calibrated size is placed in a standard mass-produced setting. Some of these standard settings are designed for inexperienced consumers to use with only very simple tools. Some cleverly designed mountings will snap shut once the gem is placed in the correct position, merely requiring the claws or prongs to be tightened to ensure that the setting is secure. However, most gemstone buyers still go to their local jeweler to have their gemstones set. 
6-Prong Ring Setting
The term calibrated size refers to a gemstone that is sized to fit in these standard settings. There are a variety of calibrated sizes for each popular gemstone shape. The sizes are measured in millimeters, and the measurements for most gems have two values, such as 7 x 5 mm. This means the gem is 7 millimeters long and 5 millimeters wide. Since gemstones are three dimensional, they obviously have a depth measurement as well. But this measurement is generally not important for the size of the setting, so the size is usually given with two numbers only. The exception to this is round stones, where the length and width is the same. So calibrated sizes for round stones are stated with a single number, which indicates the diameter of the stone. 
3-Prong Ring Setting
Nearly any round gem can be put in a standard claw or prong setting, even if the gem is not a calibrated size. That's because it's easy to adjust the prongs in a 4 or 6 claw round setting. With other shapes, there are various factors to be considered. As a rule, gems under one carat can be within .1 mm of the calibrated setting size. For gemstones over one carat in weight, a .2 mm variance can usually be accommodated and sometimes more. If a a non-round stone is not close enough to a calibrated size, it will require a custom setting. This means that instead of using a cheaper mass-produced setting, the jeweler will have to create a setting especially designed for the specific gemstone. This will be more expensive and time-consuming, but for a special or unique gemstone it is usually worth the effort and expense.
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Overall Rating -> 10 I love the clear description of the certification options. It's very rare to see a gem site that offers a deep explanation of each institution that would certify the stone(s). Posted By Oakcityceo in May, 2023 Source: Bizrate Overall Rating -> 9 I got my order early and was happy with the stones, Just wish they were a little bigger, very nice quality Posted By Wolf in January, 2023 Source: Bizrate Overall Rating -> 10 Gemselect is the perfect site for all your precious stones to buy Posted By Nate in October, 2022 Source: Bizrate Overall Rating -> 10 Exact dimensions of each gem would be helpful, or even better, place the gem on a white paper with 1 mm black grid so that exact dimensions can be see. Otherwise great experience! I hope your business prospers!! Posted By James in August, 2022 Source: Bizrate Overall Rating -> 10 I have been shopping with Jim select for quite a few years. The descriptions of the gyms are accurate and the selection is very broad. Anyone looking for loose gyms, this is the place to go. Check out is easy.Pricing is very reasonable. Posted By Ronald in January, 2023 Source: Bizrate Related Articles Caring for Gemstones Gemstone Care - Gemstone Information - GemSelect ... Gem Hardness and Durability Gemstone Hardness and Durability ... Prong Vs. Bezel Settings Prong Vs. Bezel Settings ... Tension Settings Tension Settings ... Types of Gem Settings Types of Settings for Gemstones - Gem Settings ... Uniqueness of Gold Uniqueness of Gold ... Beaded Gem Bracelets Beaded Gemstone Bracelets ... Heart Engagement Rings Engagement Rings from the Heart ... |
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Size and Weight
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Gems are always measured in Millimeter (mm) Dimensions are given as; Select gems by size, not by weight! Note: 1ct = 0.2g  |
