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HPHT Diamond

HTHP is the abbreviation of “high temperature and high pressure” diamond processing technology.

parameter


  • Carat : 0.3 ~ 6.0
  • Clarity : VVS / VS / SI
  • Color : D / E / F / G
  • Cut : Excellent / Very Good / Good

Lab grown diamonds have the same chemical, physical, and optical characteristics as natural diamonds.

 

HPHT Diamond Technical  Data

Property Lab grown diamond Natural diamond Different
Chemical  composition

Carbon

Carbon

NO

Refraction  Rate

2.42

2.42

NO

Relative density

3.52

3.52

NO

Dispersion

0.044

0.044

NO

Hardness

90GPa

90GPa

NO

Thermal  performance

2 * 103 W/M/K

2 * 103 W/M/K

NO

Thermal expansion properties

0.8 * 10-6 K

0.8 * 10-6 K

NO

Light transmittance

Deep UV to far IR

Deep UV to far IR

NO

Resistance rate

1016 Ohm(-cm)

1016 Ohm(-cm)

NO

Compressible

8.3 * 1013  m2 /n

8.3 * 1013  m2 /n

NO

 

 

The only difference between them is their origin.

         

               Clean and tidy modern factory                                                               Destructive mining

 

HPHT diamond Extended information

HPHT diamond growth occurs within massive pressure cookers. Small diamond seeds are placed into a growth cell and graphite is inserted on top of the diamond seeds. The pressure cooker is heated to 1500°C and pressurized to approximately 70,000 times the pressure at sea level.

Carbon atoms adhere to diamond seeds and crystallize slowly in such high temperature and high-pressure environment.

 

 

As an experienced manufacturer, we know that high-quality products come from strict control of every detail in the production process.

 

1.  High-quality raw materials are the first step to get a good product.  

The diamond seed crystals are carefully wrapped by high-purity graphite and metal catalysts.

         

 

2.  Huge man-made equipment simulates the high temperature and high-pressure environment inside the earth.

 

3.  Finally, we get quality HPHT diamond  (Type Ⅱ A Gem Raw diamond )

   

 

Delivery time:

Sufficient Stock of various shapes, Carat, Clarity.  Delivery within 48 ~ 72 hours.

 

Packaging & Transport:

The diamond will be packed with a hard paper bag, carton, or as your requirement.

We will use the first-class international express company and all the goods are insured according to the full value of the goods.(DHL/UPS)

 

Direct from factory to customer, no middleman. 

Faster delivery, super quality, lower price, and better service. Been waiting for you.

 

FAQ:

Q1. What is your minimum for purchase?

A:  We don’t have a minimum. we accept any quantity of sample order.

 

Q2. What are your terms of payment?

A:  We accept T/T, Western Union

 

Q3:  May tax or VAT cost to my order?

A:  If your purchase quantity small, we will transport it in the name of “private package”

If your purchase quantity a lot, we will use commercial parcel transportation.

However, The laws and taxes differ greatly from country to country. If you are not sure what the diamonds importing duties are in your country, we suggest contacting your country’s customs department for the most up to date information.

 

Q4:  How do you ship the goods and how long does it take to arrive?

A:   Yes, we have plenty of goods in stock, which can be delivered in 48 hours.

If your order is large, We can confirm delivery within 5~10 working days.

 

Q5.  is it safe to receive a diamond in the mail?

A:   We will use the first-class international express company and all the goods are insured according to the full value of the goods.(DHL/UPS)

all shipments are insured for the full value of their contents.

 

SKU: JAK-01 Categories: HPHT Diamond
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