Frequently asked questions about lab-grown diamonds
Lab-grown diamonds—the “black swan” that broke into the jewelry industry from the field of industrial technology, have stirred up the “clear waves” of the jewelry industry time and time again in recent years, and every small move will cause ripples. However, both inside and outside the industry, there are more or less prejudices and misunderstandings about lab-grown diamonds. Today we will dig into the truth behind them.
Lab grown diamonds (also known as lab created diamonds, man made diamonds, engineered diamonds, and cultured diamonds) are grown in highly controlled laboratory environments using advanced technological processes that duplicate the conditions under which diamonds naturally develop when they form in the mantle, beneath the Earth’s crust. These lab created diamonds consist of actual carbon atoms arranged in the characteristic diamond crystal structure. Since they are made of the same material as natural diamonds, they exhibit the same optical and chemical properties.
First of all, there are common questions about cultivated diamonds ~ don't worry
let me answer you one by one
Are lab-grown diamonds real diamonds?
Hardness and Refractive Index. The only difference between the two is the growth environment. Natural diamonds are formed underground, while cultured diamonds are grown in a laboratory.
In July 2018, the US Federal Trade Committee (Federal Trade Commission) has rectified the name of lab grown diamond (grown diamond), recognizing that lab grown diamonds are genuine diamonds, and real diamonds have been redefined.
——Lab grown diamond is real diamond
Which is better between CVD and HPHT lab-grown diamonds?
There are two main methods of manufacturing lab-grown diamonds: HPHT x CVD
One is high temperature and high pressure method (referred to as HPHT),
One is chemical vapor deposition, which is deposited from carbon elements produced by methane combustion (referred to as CVD).
The diamonds produced by both methods are real diamonds, and the composition, properties and appearance of cultivated diamonds are exactly the same as those of mined natural diamonds. They are all real diamonds, and they can all be issued appraisal certificates by authoritative appraisal institutions such as GIA, IGI, HRD, and China Jewelry and Jade Quality Supervision and Inspection Center.
NO.1 Diamond size
Most of the roughs produced by CVD technology are more than 4 carats, and the finished loose diamonds are more than 1 carat. The relative cost of producing small-grained grown diamonds by CVD technology is very high, so only roughs that can polish more than 1 carat of loose diamonds can be produced.
The rough produced by HPHT technology is relatively small, and the size of the finished loose diamond is less than 1 carat. However, with the upgrading of technology, it is now possible to produce rough rough with more than 1 carat of loose diamond.
NO.2 Diamond Clarity
The clarity of CVD chemical vapor deposition method is relatively cleaner
HPHT is a high temperature and high pressure method that will produce some impurities
HPHT produces diamonds by liquefying graphite and condensing under high pressure. During the formation process, internal and external defects will appear.
However, because CVD does not involve the participation of a catalyst, the gas used is easy to purify, so the purity and clarity of diamonds produced by CVD are particularly high.
Do lab-grown diamonds change color over time?
Lab-grown diamonds, like natural diamonds, are the hardest and most stable substance in the world, do not change color, and cannot wear their surface with daily wear.
But diamonds prefer lipophilic things, from fumes in the kitchen to lotions for skin care, all of which have their favorite oils… Over time, a layer of grease is adsorbed on the surface of the diamond, which greatly affects the reflection and refraction effect of the diamond on light, causing it to look dull, it is recommended to develop the habit of regular cleaning and regular maintenance.
How to clean: you can directly clean with clean water; You can also use a neutral detergent such as dish soap, take a soft-bristled toothbrush to gently brush the surface of the diamond, and use a dry flannel cloth to absorb moisture; Or buy a special jewelry cleaning solution at a jewelry store and follow the instructions for use to wash the diamond.
After saying the doubts, some people still have misunderstandings about lab-grown diamonds~
Let's walk into the answer together
Are lab-grown diamonds clearer than natural diamonds?
Many people think that the clarity of laboratory-grown diamonds is relatively high. In fact, cultivated diamonds only simulate the high-temperature and high-pressure growth environment of natural diamonds. There are also many uncontrollable factors, which lead to rough grades produced under the same conditions. Bad. External factors also have a great influence: power supply stability, gas purity, seed crystal quality and ambient temperature, etc. Therefore, under the careful care of scientists, cultivated diamonds are free to grow themselves, and each one is unique.
In addition, the rough needs to go through various processes such as cutting and polishing before it can be finally polished into a diamond. During the cutting process, there will also be factors that affect the clarity of the diamond, such as cracked edges and scratches. Of course, with the continuous improvement of technology, the cultivation of laboratory diamonds will gradually stabilize, making the clarity more pure.
Lab-Grown Diamonds Made in a Week?
Lab-grown diamonds do grow much faster than natural diamonds. Using advanced processes, technicians are able to replicate the conditions under which gemstones naturally form beneath the Earth’s crust and create diamonds much faster in highly controlled laboratories. In a laboratory environment, carbon atoms are deposited on the seed diamond, which grows at a rate of 0.007 millimeters per hour, and a 1-carat-sized lab-grown diamond rough can be grown in a week. But this carat is just a rough diamond, and its height is not enough to cut into a 1-carat loose diamond. If it is cut into a loose diamond, the loose diamond is only about 0.25 carats, and the CVD rough that can be cut into a 1-carat loose diamond weighs about 4 carats. From rough to loose diamond is another long process. Lab-grown diamonds go through the same process as any mined diamond and are graded by the 4Cs: Cut, Color, Clarity, and Carat. The better the cut, the more sparkle it will have. You may want to know Lab-Grown Diamonds vs Moissanite
MW CVD Diamond
MW CVD Diamond is also a hard stone. It is lab created high carbon gemstone. By absorbing the advantages of PVD technology to improve CVD synthesis technology, MW CVD Diamonds is more stable and shining. It’s the diamond imitator, not cubic zircon, hardness ranking at 9.0. It has an RI 2.27 – 2.31, which is lower than moissanite. But because it contains carbon, it also has a very beautiful fire color and high brilliance. It cannot pass the diamond test. Since it can not pass the diamond test, only has product quality certificate.
Our lab grown diamonds are created from the tiny carbon seeds of pre-existing diamonds. Advanced technology – either extreme pressure and heat or a special deposition process known as CVD – mimics the method of natural diamond formation. Some man made diamonds created through deposition may also undergo pressure and heat treatment after they are grown. Man made fancy colored diamonds are formed when small amounts of specific trace elements are present during the growth phase of the created diamond, just like in nature. In both white and fancy colored man made diamonds, the exact composition of trace elements may differ from their natural diamond counterparts. A man made diamond can only be distinguished from natural diamonds using specialized equipment that can detect the minor differences in trace elements and crystal growth.
I hope that after reading the introduction of this article, you can dispel your worries and eliminate secular prejudices. Cultivated diamonds are a new choice brought about by technological progress. We must face up to its existence, slowly understand and accept it.
If you have any questions or ideas about lab-grown diamonds, please leave a message or private message us, we will provide you with professional and comprehensive answers, and restore the true appearance of lab-grown diamonds for you.
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