CVD Diamonds, Everything You Should Know

How much do CVD diamonds cost?

Natural diamonds cost much more than CVD-grown diamonds. The only reason why it is cost-effective is that a stone grows for less than a month. Therefore, it does not require any mining costs. And when it comes to natural diamonds, it takes billions of years to form. Mining companies invest a lot of money and time in reclaiming land, building mines, and employing large numbers of manual laborers. Although the latest CVD diamonds require investment in advanced machinery and skilled labor, the total investment is still lower than mining diamonds.

Lab-grown diamonds such as CVD and HPHT cost 40-60% less than mined diamonds. However, they are still valuable, authentic, and very real. Growing, cutting, grading, and polishing CVD diamonds requires a lot of work and expertise.

Should you buy diamonds grown through CVD?

Choosing between mined diamonds and CVD diamonds is a personal decision. But it’s good to remember that when you choose CVD, you’re choosing an ecologically sustainable and ethical option. It’s also cheaper and won’t weaken your budget. The gemstone you choose is the product of scientific wonders, not gemstones mined from the earth by depleting its natural resources.

If you’re looking for something that’s still very precious and rare within your budget, CVD diamonds should be your first choice. They are extremely durable, of high quality, long-lasting, and have similar physical, chemical, and optical properties to naturally mined diamonds. So, if you’re looking for something beautiful and rare, you should go for CVD diamonds!

Can you identify CVD diamonds?

You don’t have to worry about the appearance of diamonds grown through the carbon vapor deposition process. Anyone, including professional gemologists, can only use specialized techniques to identify the difference between a CVD diamond and a real diamond. Caron vapor deposited diamonds do not appear counterfeit or differ from natural diamonds.

When these gemstones are magnified, you may find that diamonds grown through CVD have different strain patterns than mined diamonds. However, you may need the help of professional gemologist knowledge to decide what you’re looking for, as even top gemologists can struggle to see the difference between them. When equipment is used to distinguish between mined diamonds and CVD diamonds, people try to look for traces of silicone. Traces of silicone are sometimes found during the growth of CVD-made diamonds.

When you buy these types of diamonds, make sure it’s GIA certified. The good news is that every diamond offered by BLGD is graded by GIA and carefully selected by expert craftsmen in the diamond industry.

Diamond grading and certification Like natural diamonds, lab-grown diamonds, such as CVDs, are graded according to their 4Cs (cut, color, clarity, and carat). In addition, it is graded according to other details such as polishing, symmetry, and fluorescence. A diamond’s grading can accurately interpret its authenticity and quality. The determination of the price of a diamond is also done with the help of grading. GIA also prints a unique code on the waistline of the gemstone. Unique codes are only visible when enlarged and then printed on paper that mentions all the details of the gemstone, including carat weight, grade, and size.

The craft of CVD diamonds

The process of CVD diamonds requires highly advanced scientific processes that have been developed and perfected over decades. CVD helps to manufacture jewelry-quality gemstones in a relatively fast and efficient manner. The carbon vapor deposition process is scientific and is used to manufacture a variety of solid materials, generally used in the semiconductor industry. The CVD process takes about two to four weeks to grow a diamond.

Choose a very fine diamond seed, about 300 microns thick and 10×10 mm, called a “diamond seed”, and clean it thoroughly. Cleaning diamond seeds is crucial because any blemishes or blemishes crystallize during the CVD growth of the diamond. Crystallization leads to the formation of inclusions. The fine sections of diamonds are usually taken from high-quality diamonds formed by high temperatures and pressures.

The high-quality diamond seeds are placed in a sealed chamber and heated to around 800 degrees Celsius. The sealed chamber is filled with carbon-rich gas. The chamber must be completely closed to prevent any other gas from entering the chamber, hindering the growth of CVD diamonds.

The carbon-rich gas undergoes an ionization process in a sealed chamber. The ionization process involves breaking molecular bonds precipitated on existing diamond seeds. Pure carbon molecules attach to the seeds, and the process continues as more carbon-rich gas ionizes and precipitates onto existing diamonds.

CVD diamonds have a life course similar to natural diamonds after being lab-grown. First, it is cut according to the desired shape and carefully sanded to achieve a dazzling brilliance. The gemstones are then graded by GIA, just like naturally extracted diamonds, and traded by jewelers.

How much time does CVD-grown diamond take?

The rate at which a diamond grows through CVD depends on the size of the diamond and the efficiency of the machine used. One can make one carat of these gemstones in less than a month, or smaller in two weeks. Colored diamonds, such as yellow gemstones, can take five to ten days. Colored gemstones take less time than transparent gemstones because the nitrogen added when they form accelerates the crystallization process.

What are the characteristics of CVD diamonds?

Natural diamonds have characteristics similar to diamonds grown by carbon vapor deposition. CVD diamonds are made up of chemical and physical composition, internal structure, and lustrous beauty similar to real diamonds. Like naturally extracted diamonds, CVD has excellent durability and reaches Moiré grade 10 with intense sparkle and brilliance.

Like real diamonds, diamonds made by carbon vapor deposition are graded according to the 4Cs of the diamond – cut, clarity, color, and carat. Although CVDs are bred by humans, they contain the same imperfections and blemishes as natural diamonds. When grown in the lab, they may find certain internal defects and colors. It is difficult to find a flawless and perfect CVD diamond. Some diamonds grown through CVD may be poor in color or heavy in inclusions, while others may be colorless with minor imperfections. Even naturally extracted diamonds have similar flaws and blemishes. View VS2 clarity grades versus SI1 and D to F color grades; A diamond looks of good quality and provides a good return on your investment.

Even professional gemologists cannot tell the difference between CVD and natural diamonds. The reason is that CVD diamonds are real diamonds. CVDs contain the same chemical, physical, and optical features. When you buy a CVD diamond, you’ll find a GIA or IGI report that specifically states its country of origin. In addition to this, anyone needs an advanced machine to distinguish CVD from real diamonds.


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  1. […] When it comes to purchasing a diamond, you may find yourself faced with a decision: Should you buy a real diamond or opt for a lab-grown one? Both options have their merits, but it’s important to understand the differences and consider various factors before making a choice. In this article, we will delve into the real diamond versus lab-grown diamond debate, providing you with valuable insights to help you make an informed decision. So will you choose real diamonds or lab-grown diamonds? […]

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