This article will discuss the Blue hue of hpht diamonds, GIA certification, and the process used to grow these diamonds. We will also discuss the cost of these diamonds. You will also learn about the grading process used for hpht diamonds.
GIA certification
GIA certification for HPHT diamonds means you can be confident that your purchase is genuine. The process can be used only on high-clarity diamonds. Diamonds that have inclusions or fractures are not suitable for HPHT treatment. The process also does not involve the use of chemicals, irradiation, or coating. GIA-certified HPHT diamonds offer the same wear quality and durability as natural diamonds.
GIA certificates include information about a diamond’s proportions, polish, symmetry, fluorescence, laser inscription, inclusions, and other characteristics. If a diamond is certified as man-made, the GIA will use its standardized scales instead of using scales for natural diamonds.
Blue hue of hpht diamonds
HPHT diamonds can be a great choice if you’re looking for a diamond with a blue hue. HPHT diamonds are lab-created with impurities like boron, which gives them a blue hue. The blue hue is often noted on grading reports as a “blue nuance.” Natural diamonds are generally yellow-colored, but some of them have blue hues. This means you should be cautious when buying HPHT diamonds, and you should always ask for a certificate to verify the authenticity of the diamond’s color.
HPHT diamonds are less expensive than natural diamonds, but they still hold the same qualities. They sparkle and are just as dazzling as a natural diamond. In fact, HPHT-treated diamonds have more luster and brilliance than a red or blue gem. No black gem has a polish that matches the polish on HPHT diamonds.
Cost of hpht diamonds
HPHT diamonds are a great way to get the look and feel of a natural diamond without the steep price tag. Not only do these diamonds look like natural diamonds, but the HPHT process also increases their color. In fact, this process can improve the color of natural diamonds from yellow to colorless. Unlike natural diamonds, which often have tints or brown tinges, HPHT diamonds will stay whiter for much longer than natural ones.
This treatment is most effective on type 2A diamonds. These diamonds are classified by their molecular structure. Type 1 diamonds contain a natural nitrogen impurity, while type 2A diamonds have a perfect molecular structure and little to no nitrogen. When the correct conditions are met, these diamonds can improve dramatically. These are the type of diamonds that are considered “fancy” in color.
Process used to grow hpht diamonds
One of the primary differences between HPH diamonds and natural diamonds is the process used to grow them. HPHT diamonds are grown in a high-pressure, high-temperature (HPHT) environment. They are characterized by their yellowish color and presence of dark metallic inclusions. These inclusions can help identify them and are usually harmless and not a concern when it comes to wearability.
The process for growing CVD Vs HPHT diamonds consists of feeding varying gas mixtures into a growth chamber. Once in the chamber, the mixtures are heated to nearly 1500 degrees Fahrenheit. At this high temperature, plasma is created, and the carbon particles are released from the plasma. These pieces of carbon are then deposited onto the diamond seed, which grows into a diamond. The process results in Type IIA diamonds, which are incredibly rare and not common among naturally occurring diamonds. Furthermore, HPHT diamonds are chemically pure, while CVD diamonds do not exhibit magnetic properties.
Availability of hpht diamonds
Diamonds produced through the process of chemical vapor deposition (CVD) are also considered real gems. The main difference between HPHT and CVD diamonds is the process used to create them. In a CVD production facility, a carbon source is heated to extreme temperatures. The carbon atoms then combine to form diamond crystals, which have a high purity level.
Conclusion
HPHT synthetic diamonds are often distinguishable by the fluorescence color that they display. Some show a single fluorescence color, such as green, while others display a mixture of colors. Typically, green fluorescence indicates H3 defects, while orange and red fluorescence indicates NV centers. Scientists are unsure of the origin of other colors. However, there have been no compelling correlations among the different fluorescence colors observed in HPHT diamonds.
