Beautiful Lab Grown (Chatham) Emerald Rough 50+ carats!
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Sold Date: 04/20/2010
Channel: Online Auction
Category: Natural History
Beautiful Lab Grown Emerald Rough !
Great for jewelry and lapidary artists
Own a piece of San Francisco!
This is a lot of 5 pieces totaling over 10 grams!You won't find this type of material very often.
Compare to naturalemeraldsChemically and structurally the same as natural emeralds
Hardness: 7 1/2 - 8
Clarity: most have the jardin (garden) found in natural emeralds. Also, natural emeralds are almost always oiled to achieve more clarity.
Our emeralds are NEVER oiled. Please note this when you look at the photos.Color: generally a deep emerald green If you can find stones of comparable quality, we are sure that our prices are very competitive and are likely to be a mere fraction of any other seller, even wholesale. We don’t believe you will find a more affordable source for these beautiful gems. If you do, please let us know. And by all means, ask your local jeweler or gem shop. A word about lab-created gems All gems and minerals are a combination of atomic molecules that bond to form a specific chemical structure. Gems that are created in a lab should not be confused with materials that mimic or imitate natural stones, with shapes, colors, and structures that appear to be, but are not, the original material. Sometimes called synthetic, lab-created gems have the same chemical structure and composition as those found in nature, usually with some additional variation so that they can be distinguished from the natural. This variation allows the new gem to be identified as lab created, often to the specific lab it was grown in. The first successful commercial process for creating material is known as the Verneuil or flame fusion process. Chemicals are introduced into a chamber, heated to an intense degree, and allowed to “melt” together to form what is known as boule. Today, this process is performed at many worldwide labs, the best-known in Switzerland , w the process was developed. Another process is called hydrothermal. This process imitates the natural conditions of intense heat and pressure that form many of the gems that are found around the world. T have been many beautiful gems produced in this way. A third process is called the flux method, by which chemicals are brought together in a sort of “soup” at extreme heat and allowed to form into crystalline structures over a long period of time. This is perhaps the most expensive and time-consuming process as these gems are grown in platinum crucibles and require constant monitoring and controlled heat. It is under these conditions that our emerald clusters and crystals came into being. The original lab-created emeralds Though many types of gemstones have been produced in laboratories to date, most notably sapphires and rubies, some of the finest were developed by a man named Carroll Chatham of San Francisco , California . In fact, up until the 1990s, his laboratory produced some of the most beautiful gems known to the industry. That San Francisco laboratory, now closed, is the source of our emerald clusters and crystals. *Product disclaimer: Please note that this website, its owners, and these gems are not affiliated with Chatham ® Created Gems which is managed by Tom Chatham, one of Carroll Chatham’s sons. Chatham ® Created Gems is a registered trademark, and cannot be legally used to describe the emeralds we sell. Please also note that we are not affiliated in any way with a product of the electronics industry, known as Emerald Cluster, that is produced by Advanced Micro Devices, Inc. of Sunnyvale , CA . Please see our other items for sale: Chatham Emerald Clusters and Crystals, Benitoite Facet and Cabochon Rough!
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