While lab-grown diamonds have the same material and chemical composition as natural diamonds, they require specialized quality assessment to account for differences in growth patterns and imperfections. This article will examine wholesale lab grown diamonds evaluation best practices.
Cut – Like mined diamonds, the skilled faceting of lab diamonds is crucial for optimizing their brilliance and fire. Quality of polish and symmetry are assessed identically, though limited size availability and crystal shape can sometimes constrain cut potential.
Clarity – Most lab processes produce high clarity diamonds, though some may have metallic inclusions from catalysts or small internal flaws. Unique lab trademarks also get flagged during grading. Overall, they tend to rank Very Very Slightly Included (VVSI) or better.
Color – Leading lab diamond processes deliver near colorless to colorless stones, equivalent to G-J mined diamonds. Some methods also enable tailored colored pinks, blues and yellows. However, undesirable brown hues are still a production challenge.
Carat – While carat weight is measured identically, typical lab diamond growth limits maximum sizes to around 3 carats currently. However, the ability to grow customized larger stones is rapidly improving.
Specialized labs like GCAL and IGI now issue quality reports designed specifically for lab diamonds accounting for their unique growth and production characteristics. Ultimately, optimizing the trifecta of low cost, high quality and large sizes will catalyze further adoption among both consumers and retailers.
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