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Gemstone Doublets
Sapphire Doublet
Recently a prospective customer wrote to us to ask about a sapphire doublet he had just acquired. He wasn't quite sure what a doublet was and wondered whether the gem was especially valuable. On the face of it, a doublet sounds like a good thing; you would think it should be twice as good as a singlet. Unfortunately that's not the case in the gemstone world. A doublet is a gemstone that is composed of two parts; usually valuable gemstone material in combination with other, less expensive material. This is not a natural occurrence, but rather a man-made fabrication where two pieces of material are glued together to form a sort a composite or "gemstone sandwich". Usually the crown (top of the stone) is natural gemstone material while the pavilion (bottom) is composed of an inexpensive material such as synthetic sapphire, quartz or glass. There are several reasons why a gemstone doublet may be created. It could be done with the intention to deceive since well-fabricated doublets can only be detected by the expert eye. Since a 2 carat sapphire doublet may contain less than 1 carat of natural sapphire, it would certainly be fraudulent to sell a doublet as a natural sapphire. 
Opal Doublet
A sapphire doublet may also be produced simply with the intention of saving cost. As long as the stone is disclosed as a doublet at the time of sale, there is nothing wrong with this practice. However, an ethical dealer should ensure that the customer is aware of what he's buying when he purchases a doublet. That was clearly not the case with the buyer who wrote to us asking about the value of his sapphire doublet. 
Opal Doublet
Any kind of gemstone material can be produced as a doublet, especially expensive varieties such as sapphire, ruby and alexandrite. However, doublets are most often found in opal, since high quality precious opal is both very expensive and fragile. An opal doublet consists of a slice of precious opal usually glued to a black backing (common opal or glass), designed to imitate the appearance of a solid black opal. Fixing the slice of opal to a black backing causes the color to become much darker and more vibrant. Opal doublets are well regarded as a less expensive alternative to solid opals, which are very expensive in larger sizes.
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Overall Rating -> 10 Gem select was a company we were just looking at their products and my wife liked her birthstone so we ordered it and when it came she was very happy with what she received and because of that she wants to order again to make earrings with the next order so Gem Select is the company we will be shopping from now on Posted By Quasi in October, 2022 Source: Bizrate Overall Rating -> 10 I've purchased a few items within the last year and the products are amazing, easy to find with detailed information on each product. Thank you for being on time with everything delivery. Posted By Lifeovamoney in September, 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 It was a nice and easy process throughout! The website is simple and well made I found everything I needed quickly. I needed some emeralds of a certain size for my custom engagement ring but they only had 3 available on the website, So bought the available ones and reached put to customer service to see if they have any more and they messaged me back within minutes with a list of similar sized emeralds that were not on the site! I quickly purchased my remaining emerald and they added it to my first order! I am more than pleased with the experience and I will be recommending them to anyone in the market for gems! 10/10 Posted By Marty in July, 2022 Source: Bizrate Overall Rating -> 10 Excellent selection of products. Website easy to navigate and make purchases. Posted By David in April, 2023 Source: Bizrate Overall Rating -> 9 As long as I continue to have confidence that what I am buying is genuinely what is being advertised then I am happy. If an item is listed as natural but is actually lab created, well that would be the last time I support this company. Posted By Zac in December, 2022 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 Related Articles Opal Information Opal Information - More to it than a dazzling play of colors ... Gemstone Clarity and Cut Clarity and Cut - Gemstone Information - GemSelect ... Organic Gemstones Organic Gemstones - Certain gemstones are not stones at all ... Chocolate Opal Info Chocolate Opal Gemstones - Tempting enough to eat! ... |
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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  |
