1.18CT D VS1 3EX Hthp Loose Diamonds Manufacture HPHT Diamond

HPHT Loose Diamond Manufacturing

  The manufacturing process behind HPHT loose diamonds combines advanced technology with ethical responsibility. HPHT stands for high pressure, high temperature – the conditions which labs replicate to grow polished diamonds that rival nature’s finest. 

  Powerful presses produce pressures over 1.5 million pounds per square inch, while temperatures exceed 2,500°C. In this extreme but carefully controlled environment, loose HPHT diamonds crystallize atom by atom. The resulting rough gems exhibit astonishing clarity and color ratings up to D and IF. 

  Diamond cutters facet these into ideal proportions to maximize brilliance, creating sustainable loose diamonds with unmatched light performance. Each polished HPHT loose diamond comes laser-inscribed with its parameters for identification as a non-mined origin. 

  By replicating natural conditions, HPHT technology sustains no environmental harms associated with diamond mining. The greens and blues of HPHT mining-free manufacturing allow more people access to loose diamonds with mesmerizing beauty. As innovators in diamond production ethics, HPHT manufacturers pave the way to a luxurious and conscience-clear future.

About Weight

*One carat is equal to 0.2grams.
*The waist diameter of the diamond will be affected by the cutting method and proportion. So the same weight diamonds may have different waistlines.

CARAT＆DIAMETER
 0.10cts≈3.0mm
 0.20cts≈3.8mm
 0.30cts≈4.5mm
 0.40cts≈4.8mm
 0.50cts≈5.2mm
 0.75cts≈5.9mm
 1.00cts≈6.5mm
 1.50cts≈7.4mm
 2.00cts≈8.2mm

About Diamond Rough

COLOR: D E F G H I J
CARAT: 0.5-2.0
CLARITY: VVS VS SI
CUTTING: IDEL EXCELLENT

Make your personal jewelry

Ring, Earrings, Bracelet, Pendant with Moissanite/ lab grown diamond/Eemerald your personal jewelry maker.

About Diamond Tester

 As HPHT method involves using metal catalyst, it is hard to avoid some metals entering the crystal during growing process, so HPHT diamonds might be magnetic. And if the magnetism is too strong, diamonds will not be able to pass the diamond teste. Because CVD diamonds are formed by mere gas, they can be produced without magnetic and are able to pass the diamond tester pen.

What is cvd diamonds?

  Chemical Vapor Deposition. Chemical vapor deposition uses one or more gases to chemically react on a heated solid substrate and is coated with a solid film. The diamond is a natural diamond bare stone as the mother stone, using high-purity methane, plus hydrogen, nitrogen and other gases to assist, in a microwave oven under high pressure, so that the same carbon molecules in methane as diamond continue to accumulate on the rough diamond. Layer by layer, it can form transparent diamonds up to 10 carats. 

  In order to make CVD diamonds grow smoothly, the carbon source is often methane that already has a diamond structure. Methane can be regarded as a monoatomic diamond extruded with hydrogen. The quality of this "grown-up" diamond is almost the same as a natural diamond, making it hard to distinguish with the naked eye. At present, this kind of CVD synthetic diamond can be distinguished from natural diamond by observing its phosphorescence performance under short-wave ultraviolet, and a simple preliminary screening can be performed.

Lab grown diamond IGI Certificate