HPHT

HPHT diamonds (High Pressure, High Temperature) are laboratory-grown diamonds created under extreme pressure and temperature conditions — replicating the natural environment where diamonds form deep within the Earth. This method faithfully reproduces the natural crystallization of carbon, resulting in stones that share the same chemical, physical, and optical properties as their mined counterparts.

HPHT diamonds exhibit exceptional hardness (10 on the Mohs scale), adamantine luster, and captivating light performance — brilliance, fire, and scintillation — comparable to that of natural diamonds. Once cut and polished, they appear virtually identical to mined diamonds when viewed with the unaided eye.

However, their laboratory origin can be detected through advanced gemological instrumentation. HPHT diamonds may exhibit specific growth features — such as metallic inclusions (catalyst remnants), color zoning, or distinctive UV fluorescence. These internal characteristics do not affect the appearance of the stone but enable precise identification by experts.

HPHT diamonds offer a high-tech, ethical, and cost-effective alternative to mined diamonds. Thanks to their balance of quality, value, and sustainable production, they are increasingly embraced by the fine jewelry industry — and by those who appreciate beauty, innovation, and conscious living.

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29 items found
HPHT Cushion, 6.80 mm * 6.80 mm, Fancy Vivid Yellow / VS+
79 400 
HPHT Cushion, 6.20 mm * 6.14 mm, Fancy Vivid Yellow / VS+
55 450 
HPHT Cushion, 5.50 mm * 5.50 mm, Fancy Vivid Yellow / VS+
35 000 
hpht Round, 6.40 mm, F+ / VS+
11 470 
HPHT Trilliant, 6.00 mm * 6.00 mm, E+ / VS+
18 900 
HPHT Shield, 7.65*5.05*3.25 mm, E+ / VS+
13 810 
HPHT Trilliant, 5.50 mm * 5.50 mm, E+ / VS+
13 300 
HPHT Pear, 7.00 mm * 4.50 mm, E+ / VS+
13 260 
HPHT Shield, 6.85*4*60 mm, E+ / VS+
10 095 
HPHT Trilliant, 5.00 mm * 5.00 mm, E+ / VS+
10 700 
HPHT Pear, 6.00 mm * 4.00 mm, E+ / VS+
7 250 
HPHT Shield, 5.17*3.55*3.00 mm, E+ / VS+
5 900 
HPHT Trilliant, 4.50 mm * 4.50 mm, E+ / VS+
7 400 
HPHT Round, 4.10 mm, F+ / VS+
2 751 
HPHT Taper Baguette, 5.00 mm * 3.15 mm, E+ / VS+
5 040 
HPHT Round, 3.80 mm, F+ / VS+
1 927 
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