Posts Tagged ‘ Loose Stones ’

How Diamonds Are Mined

Florida diamond

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Each year, thousands of diamonds are mined that eventually make their way into a jeweler’s showcase or on a woman’s ring. Every diamond falls into one of three categories.

Gem Quality Diamonds – These diamonds are less common than the others. Diamonds that fall into this category display a high standard of excellence and quality. The clarity of these diamonds ranges from flawless through visible inclusions.

Near-gem Quality Diamonds – These are the diamonds that represent a quality between gem and industrial. Diamonds that fall into this category have clarity grades ranging from visible inclusions through to industrial.

Industrial Quality Diamonds – These diamonds are low quality and don’t make their way into a jeweler’s showcase. Instead, they are used industrially in things such as a dentist’s drill or earth-moving equipment.


There are two methods to mining these diamonds: pipe or alluvial.

Pipe mining refers to the extraction of diamonds from a volcanic pipe. Generally, a very large area must be covered for this type of mining. An average of 250 tonnes of ore must be mined to produce just one one-carat gem quality stone! Typically, a pipe mine is composed of kimberlite (dug from the surface of the pipes in rough opencast mining). Shafts are sunk into the ground at the edge of pipes, and tunnels are driven into the deeper parts of the pipe (this occurs after surface deposits have been exhausted). After the diamond-bearing rock is brought to the surface it is transported to a screening plant.

Alluvial mining involves the extraction of diamonds from riverbeds or ocean beaches. In order to extract diamonds by this method, 25 meters of sand are generally bulldozed aside to read the diamond-bearing level. The diamond-bearing earth is then removed and transported to a screening plant.

Raymond Lee Jewelers, check out our Florida Diamond database.

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Diamond Buyers

It seems like there are diamond buyers on every corner these days. Most advertise to pay you more, but were are they going to sell them? Some of the largest advertised diamond buyers in the country have no retail outlet what so ever. Where do the diamonds they buy go? Most diamond buyers have offices set up throughout the country, when they buy diamonds they generally sell them in the trade. This means you sell them a diamond and they sell it to someone else in the diamond business. How can they pay the most? They generally don’t. Raymond Lee Jewelers has been advertising to buy your diamonds since 1983. We are still here in the same spot buying diamonds today. We do pay the most! How do we pay the most for your diamonds? We sell retail. Every diamond that we buy goes into our retail showroom for sale. Call 561-750-7808 for more details on selling your diamond today!

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Sell My Diamond


Sell jewelry to Raymond Lee Jewelers

If the phrase ” sell my diamond ” is on your mind, you are visiting the right blog. Our blog on selling diamonds and selling various other items is geared toward being informational. If you have any question or comments on how to sell your diamond please feel free to contact us. Graduate Gemologists are on staff and available to help you with the process of selling your diamond. There are some very important things to know when it comes to selling a diamond. Diamonds with certificates from laboratories are easier to sell in some cases.

If the diamond you want to sell has a G.I.A. certificate ( Gemological Institute of America ) buyers should be able to quote you a price to buy your diamond from seeing the certificate. Most buyers should be able to just see a scanned copy of a G.I.A. via email or fax. The internet is a great place to get some prices. We ( diamond buyers ) may need to see stones in person in some cases even if they have G.I.A. certificates.

Appraisals will generally not help with the cash value of diamonds. A misconception is when an appraisal is written by a graduate gemologist from G.I.A. That does not make that appraisal a G.I.A. certificate. It basically means that appraisal was written by someone who was trained by The Gemological Institute Of America. If you have a diamond with no certificate, it is okay to sell it that way. In some cases it may make sense to send it to a laboratory for grading first. A reputable local jeweler is a good place to start. Let you local jeweler help in making the right decision regarding the diamond you have for sale. In most cases you want to get three opinions if you want to sell your diamond. Remember, a jeweler that offers to take it on consignment means either you want too much or he can not afford to own the diamond. In both cases this is not a good reference for the cash value of your diamond. Leaving your diamond on consignment in a jeweler is not generally a good idea (that is my opinion). A diamond buyer that tells you, “you should get 20k for your diamond, but I’m not a buyer” is also not a good source for information regarding value. You need real cash offers for you diamond and three of them is a good number. If you get three offers, you should get a good idea of what your diamond should bring.

Markets fluctuate, diamonds go up and down and different qualities and sizes are in demand at different times. Round diamonds are always the most in demand. Most diamond buyers will be the most aggressive for large round diamonds. Know who and what you are dealing with when selling diamonds. Please feel free to contact one of our graduate gemologists for a no obligation quote at 561-750-7808.

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