What are HPHT Diamonds?

An HTPHT diamond is a real, natural diamond that has undergone a High Pressure High Temperature process to enhance its color. The treatment turns a naturally brownish diamond into a whiter, more beautiful diamond. Because the diamond originally was brown, the treated diamond is still less expensive than if it were naturally found with such white color. The high pressure and 2300 degrees’ Celsius mimic the temperature at the Earth’s core and is a non-invasive, permanent process so that the beautiful results will last.

    The HPHT Process

  1. The HPHT diamond formation process begins with a small diamond seed that is placed into pure carbon.
  2. The diamond seed is exposed to intense pressure and heat.
  3. The carbon melts and a diamond begins to form around the seed.
  4. The substance is carefully cooled to form a diamond.
  5. The rough diamond is then ready to be cut, polished, and set into jewelry like a naturally grown rough diamond.

What are the benefits of HPHT diamonds?

Whether you are buying a diamond formed from by the HPHT process, or need one to undergo an HPHT color enhancement, there are plenty of benefits for you to enjoy.



HPHT diamonds are less expensive than their natural counterparts. Naturally formed diamonds go through a long supply chain that stretches across miners, distributors, cutters, polishers, and jewelers. On the other hand, HPHT formed diamonds, pass through fewer hands and thus incur fewer expenses.


Genuine diamonds

The HPHT formed diamonds are just as gorgeous, strong, and versatile as naturally grown diamonds. Moreover, they are chemically and optically identical to natural diamonds.


Permanent results

The HPHT color enhancement process is permanent, so you never need to worry about your diamond losing its remarkable color grade. Less upkeep, and more time to admire its sparkly features!


Environmentally friendly:

Lab grown diamonds typically place less strain on the environment. They do not require mining in mineral deposits

Frequently Asked Questions

Yes! The Gemological Institute of America—the most respected authority in diamond grading--recognizes HPHT diamonds, and considers the process non-invasive and permanent. Because there is no way to see if a diamond has been treated, it is important to have a diamond grading report from an independent lab like GIA. As part of its grading process, GIA tests all diamonds for treatments; if the diamond is treated, it will be disclosed on the certificate. At London Gold, we provide you with a GIA certificate so that you can buy with confidence.
People want to buy the biggest, best diamond at the best price. HPHT diamonds are a great option because they are natural diamonds, come GIA certified, and allow you to enjoy a bigger, more beautiful diamond at a fraction of the cost.
Non-HPHT diamonds and HPHT diamonds are both real, natural diamonds. The difference is in the treatment. Because an HPHT diamond has been treated by extreme heat and pressure, its color has been enhanced and improved. You will be able to find non-HPHT diamonds with the same color as HPHT diamonds, but you’ll see a big difference in the cost!
Diamonds are emotionally symbolic, and you want to know if your diamond has been HPHT treated. Sellers are required to tell you if your diamond is HPHT treated so that you know what you are buying. Gemologists can detect HPHT diamonds using special detection equipment, and GIA includes any diamond treatment in its reports. Because there is no way to see if a diamond has been treated, it is important to have a diamond grading report from an independent lab like GIA.

Are they real diamond ?

Yes lab Grown diamond asre absolutly real. just like how test tube babies have a diffrent origin but are real humans, lab-grown diamonds are exactly identical to their earthen counterparts, chemically and physically bith. hence, they are 100% real diamonds.

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