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5000 Degrees

farenheight of heat are applied to our Diamonds, ensuring they won’t fade under a jeweler’s torch


years of developing diamond technology processes


of jewelry grade stones are eligible for color processing



team you can trust

Suncrest Diamonds is the world leader in HPHT processing for colored diamonds and colored diamond jewelry. Founded in 1990, Suncrest Diamonds offers beautiful colored diamonds in shades of pink, yellow, green, red, and other colors—including the 2014 Pantone Color of the Year, Radiant Orchid. All Suncrest diamonds have been carefully selected, heated, and polished to bring out each diamond’s stunning color and inner beauty.


Rare Quality

Diamonds that qualify for High-Pressure High Temperature (HPHT) processing are rare. Only 2% of the diamonds available on the market today will meet Suncrest's high standards for color change. Specialized understanding and proprietary technology are required to identify and process each Suncrest diamond. Unlike other color diamond suppliers, Suncrest can deliver beautiful color diamonds in large sizes, 0.10 - 3 carats and larger.


Color Coated

Not all colored diamonds are HPHT processed. Artificial treatments–like color coating–can be used and are sometimes mistakenly confused with HPHT. It’s important to remember that color coated diamonds are:

  • Temporarily colored with a surface treatment that can change or fade diamond color with heat, cleaning in harsh solutions, or even time.
  • Treated with artificial additives that paint a thin layer around the diamond to camouflage the original color and any flaws or less desirable features
  • Generally low clarity, highly included diamonds. Although any diamond can be coated, most ionized coatings cover cheaper diamonds.

Natural Diamond

Natural color diamonds are extremely rare and expensive. A natural 1-carat pink diamond can sell for millions of dollars:

  • By comparison, a 1-carat Suncrest pink diamond will sell for a fraction of the price of an untreated natural pink diamond.
  • Most Suncrest diamonds are comparable in price to natural white diamonds. A 1-carat Suncrest SI1 — VS1 pink diamond will be priced near a G – H equivalent.

Suncrest HPHT

Suncrest diamonds are:

  • Natural diamonds that have been mined from the earth with a special chemistry to allow for color change–not lab created, synthetic, or man-made.
  • Using advanced technology, Suncrest can heat treat natural diamonds (similar to heating Rubies and Sapphires) to change diamond color. The Suncrest process replicates the earth’s pressure and applies heat at 5000°F.
  • Permanent color through a unique process that delivers a fully saturated color change that will not fade or disappear during setting or under a jeweler’s torch.

Fashionably Affordable

Color diamonds from Suncrest are a perfect match for today’s fashion-forward consumer and for retailers looking to add a touch of color—at affordable prices with improved margins—to in-store displays.

The basics of the

HPHT Process

HPHT Process

the process to enhance, high grade, off-color diamonds, by using extreme heat (approx. 5000°F) to expose the true nature of the stone––thus finishing the process the earth began.

Why High Pressure

Typically, a diamond is processed at a temperature of around 1400°C (2550°F). At room pressure, this would cause the diamond to revert to graphite. Maintaining extremely high pressure during the process allows the diamond to remain in its natural form.

Why Suncrest's HPHT Process is Superior

Suncrest Diamonds uses proprietary cubic press technology. This unique press technology allows us to produce more pressure and heat (5000°F), allowing us to ensure complete chemical restructuring and color perfection.

Improving Lives

by giving of our time in the community

We’re working to give back and enhance the lives of people in our neighborhoods and communities, to support the children in our local schools and STEM programs, and to reach out to the less fortunate around the world. We’re lending a helping hand to those that need a little extra help through our volunteer, community-giving, and Engineering Good initiatives. By teaming up with world-class partners and our employees, we’re donating thousands of hours of service yearly and tens of thousands of dollars to local communities and to humanitarian organizations around the world.

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