Grand Opening Celebration! Receive Lab-grown Diamond Studs with purchases over $1,000. A $315 Value.

Lab Grown Diamonds

Lab grown diamonds are optically, chemically, and physically identical to natural diamonds. Lab grown diamonds are not imitations; they are diamonds that are created in a laboratory and are much more affordable than natural diamonds.

Why Choose Lab Grown Diamonds?

The world is now focusing on the next generation of diamonds, free from the environmental destruction, poor working conditions, and sources of funding for conflicts that have plagued the jewelry industry.


Sustainable option for human rights and the planet that does not require mining.

Same Characteristics

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

Attractive Prices

Lab grown diamonds are much less expensive than natural diamonds. Fancy color options, which are very rare in natural diamonds, are also available.

What Is A Lab Grown Diamond?

Lab grown diamonds are diamonds created in a laboratory and which have the exact same chemical, physical, and optical appearance as natural diamonds. After crystallization occurs, diamonds mature for six to ten weeks in an environment that mimics the environment in which natural diamonds are created. While it is clear that behind natural diamonds lurk the problems of child labor, poor working conditions, local pollution, and funding of conflict that come from mining, lab diamonds do not require mining and are fully traceable, making them free from the problems that natural diamonds have. Furthermore, the quality of lab grown diamonds produced under exceptional techniques is often better than that of their natural counterparts.

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Lab Grown vs. Natural Diamonds

Lab grown diamonds have the same physical, chemical, and optical properties as natural diamonds. In other words, they exhibit the same hardness, fire and brilliance as natural diamonds. The difference between the two lies in the environment in which they are created. While lab grown diamonds are formed in laboratories over a period of 6-10 weeks under conditions that mimic those of the Earth's mantle, natural diamonds are formed deep within the Earth (about 150 km beneath the Earth's crust) in hot, high-pressure zones over a period of months to hundreds of years.

Lab Grown Diamond Characteristics

Premium Quality
Lab grown diamonds are grown in highly controlled environments in laboratories, resulting in beautiful diamonds with a more distinguished brilliance. While approximately 98% of natural diamonds contain impure elements, lab grown diamonds use a sustainable process using chemical vapor deposition (CVD), resulting in high quality, mostly impurity-free diamonds.

Lab grown diamonds are a more ethical choice for the environment and human rights, as they do not require mining and are therefore not involved in child labor, poor working conditions, local pollution, or conflict issues.

Accessible Price Range
Lab grown diamonds cost less than natural diamonds. This also allows you to enjoy luxury on a daily basis. You can make your ideal stone a reality.

Fancy Color Option
Fancy colors, which are very rare and expensive in natural diamonds, can be created with lab grown diamonds, allowing you to have the jewelry of your dreams.


Just like natural diamonds, lab grown diamonds are valued using the global 4C criteria based on the GIA (Gemological Institute of America) standards. 4C refers to Cut, Color, Clarity, and Carat, and all of these factors affect the appearance and quality of a diamond (including lab-grown diamonds). At MIYAMA, only the finest quality stones are carefully selected to create beautiful jewelry.


The cut is the most important factor in bringing out the maximum brilliance of a stone. The overall proportions of the diamond and the size and position of the facets make up the cut.
At MIYAMA, we only offer Excellent to Very Good, which are the ideal cuts to bring out the maximum brilliance of the diamond.


Color is one of the factors that determines the value of a diamond. The more colorless and transparent the stone is, the higher the value of the stone. However, fancy colored diamonds retain their color as yellow, brown, or pink, and are often quite rare in the natural diamond world, which is why they are often highly priced. Each diamond is graded by an expert according to the GIA Diamond Scale. Grades range in color from D (clear and colorless) to Z (light yellow).


The clarity of a diamond is measured by the presence or absence of flaws. Small surface scratches and internal inclusions (microscopic impurities) are extremely common in diamonds. They are usually only visible under magnification, but they change the brilliance of a diamond and affect its value. The fewer the inclusions, the more valuable the diamond.

FL: flawless IF: microscopic surface features VVS1, VVS2: microscopic inclusions VS1, VS2: very, very slight inclusions (difficult to see under 10x magnification) SI1, SI2: slight inclusions (can be seen under 10x magnification) I1, I2, I3: Inclusions visible to the naked eye.


Carat refers to the weight of a diamond.
It is said that about 250 tons of ore must be mined to find a natural diamond of one carat. Therefore, due to their rarity, larger diamonds are more valuable. However, it is now possible to make diamonds in laboratories ("lab-grown diamonds") and obtain them at a much more reasonable price than natural diamonds. Since lab-grown diamonds are chemically, physically, and optically identical to natural diamonds, their value is determined by the 4C's.