Purple lab-grown diamonds
Discover our collection of certified purple lab-grown diamonds. Available in different cuts and sizes to customize your jewelry.
Laboratory Grown Diamond Selection
Selection of lab-grown diamonds
What is a purple lab-grown diamond
A purple lab-grown diamond is a gemstone created under controlled conditions that precisely replicates the formation process of natural diamonds, with the difference that its purple color does not depend on geological rarity but on the presence of hydrogen during crystal growth. The result is a diamond with the same physical, chemical, and optical properties as one mined from the earth: Mohs hardness of 10, identical light dispersion, and pure carbon composition.
Its color ranges from soft mauve to intense violet, including lilac and deep purple hues, making it one of the most striking options among fancy color diamonds.
Why choose a purple lab-grown diamond?
The main reason to choose a purple lab-grown diamond over its natural equivalent is real access to a stone that is extremely rare in nature. Natural purple diamonds represent a minimal fraction of global production, and their price places them out of reach of the conventional market.
In the lab, the same color is obtained at a significantly lower cost without sacrificing anything in terms of gemological quality. Added to this is the complete traceability of the stone's origin, the absence of mining, and certification by laboratories such as IGI, which guarantee that you are buying exactly what you see.
How purple color forms in a diamond
The color in fancy diamonds is not an imperfection but a structural characteristic. In the case of purple diamonds, the violet hue appears due to the presence of hydrogen in the crystal lattice during the growth process, either by the CVD (chemical vapor deposition) or HPHT (high pressure and high temperature) method.
Depending on the concentration of this element and the temperature applied during the process, the resulting color can range from a faint lilac to a saturated violet. Some purple diamonds also have secondary pink undertones, which makes them particularly valued in jewelry.
The 4Cs in purple lab-grown diamonds
The 4Cs — color, clarity, cut, and carat — are the standard criteria of GIA and IGI for evaluating the quality of any diamond, including lab-grown ones.
Color
In fancy color diamonds, color is the most important variable. The IGI evaluates the intensity of the purple hue on a scale ranging from Faint to Fancy Deep. A Fancy Intense or Fancy Vivid color significantly increases the value and visual impact of the stone. If you are looking for maximum saturation, this is the criterion you should pay most attention to.
Clarity
Most lab-grown diamonds achieve high clarity levels (VS1, VS2, VVS) thanks to the control of the synthesis process. For use in jewelry, VS2 clarity or higher ensures that inclusions are not visible to the naked eye.
Cut
The cut determines how light interacts with the stone. In colored diamonds, oval, cushion, and radiant cuts are commonly used because they maximize the concentration of color in the center of the gem. An Excellent quality cut enhances the purple tone and gives it visual depth.
Carat
Size matters, but in fancy color diamonds, color compensates. Choose the carat weight based on the setting and budget, not forgetting that color is the first impression it generates.
Certification of purple lab-grown diamonds
All diamonds from Diamante de Laboratorio are certified by the IGI (International Gemological Institute), the reference laboratory for lab-grown stones. The IGI certificate includes the stone's exact color, clarity, cut, carat weight, and lab-grown origin.
It is the document that certifies that you are buying a real diamond, not a simulation, and that its properties exactly match what is stated on the product sheet.
How to choose your purple lab-grown diamond
Before buying, define its intended use. If it's for a solitaire ring, prioritize a purple with good saturation and an oval or cushion cut, which visually lengthens the finger.
For earrings or pendants, smaller sizes with intense colors usually have more impact than larger stones with dull colors. Consult our team if you have questions about the combination of color, cut, and setting: at Diamante de Laboratorio, we work with the best stones and help you find the one that best suits what you are looking for.
FAQs about Purple Lab Grown Diamonds
Yes. It has the exact same chemical composition and physical properties as a natural diamond. The difference lies in its origin, not its nature. The IGI certifies it as a diamond, not a simulant.
Natural purple diamonds are extremely rare in nature. Their price reflects that geological scarcity. Lab-grown diamonds eliminate the rarity variable but maintain all gemological properties, making them accessible without sacrificing quality.
No. The color is integrated into the diamond's crystal structure, it is not a surface coating or a treatment. It is permanent and stable to light, heat, and everyday wear.
IGI may describe the color as Purple or Violet depending on the dominant hue. Purple has more red-blue presence, while violet tends to be more bluish. Both shades belong to the same color family and are certified as fancy color.
Cushion, oval, and radiant cuts maximize color concentration and are the most common cuts for fancy color diamonds. Round brilliant cuts also work, but they disperse more light and can make the color appear less saturated.
Yes. At Diamante de Laboratorio, you can find IGI certified purple diamonds from 0.30 ct up to larger sizes. If you have a specific size or budget in mind, contact our team, and we will help you find the right stone.
