Lab grown diamonds have surged in popularity, offering a compelling alternative to natural diamonds for engagement rings and other jewelry. But how do these lab-created gems stack up against their earth-mined counterparts? This article delves into the key differences and similarities between lab grown and natural diamonds to help you make an informed decision.
Lab Grown vs. Natural Diamonds: Key Differences and Similarities
While visually identical, lab grown and natural diamonds differ in their origin and formation process. Natural diamonds form deep within the earth over billions of years under immense pressure and heat. Lab grown diamonds, on the other hand, are created in controlled laboratory environments using advanced technological processes that replicate these natural conditions, significantly reducing the formation time to weeks or months.
Both lab grown and natural diamonds share the same chemical composition, physical properties, and optical characteristics. They possess the same hardness, brilliance, and fire, making them indistinguishable to the naked eye. Even experts require specialized equipment to differentiate between the two.
The Creation Process: CVD vs. HPHT
Two primary methods are used to grow diamonds in a lab:
Chemical Vapor Deposition (CVD)
This method involves placing a small diamond seed crystal in a sealed chamber filled with carbon-rich gases. The chamber is then heated to extremely high temperatures, causing the gases to decompose and the carbon atoms to deposit layer by layer onto the seed crystal, gradually growing a diamond. CVD diamonds often exhibit a square shape in their rough form.
High Pressure/High Temperature (HPHT)
Mimicking the natural diamond formation process, HPHT involves placing carbon material (often graphite) under immense pressure and temperature within a specialized press. This intense environment transforms the carbon into a diamond.
Regardless of the method used, the resulting lab grown diamonds are then cut, polished, and graded just like natural diamonds.
Are Lab Grown Diamonds “Real”?
Absolutely. Lab grown diamonds are chemically, physically, and optically identical to natural diamonds. The Federal Trade Commission (FTC) officially recognizes lab grown diamonds as real diamonds, further solidifying their legitimacy. The Gemological Institute of America (GIA), a leading authority in diamond grading, also certifies lab grown diamonds using the same rigorous standards applied to natural diamonds.
Comparing the 4Cs: Cut, Color, Clarity, Carat
Both lab grown and natural diamonds are evaluated based on the 4Cs:
- Cut: Refers to the diamond’s proportions, symmetry, and polish, impacting its brilliance and fire.
- Color: Graded on a scale ranging from colorless (D) to light yellow or brown (Z).
- Clarity: Assesses the presence of internal inclusions or external blemishes.
- Carat: Measures the diamond’s weight (1 carat = 0.2 grams).
Lab grown diamonds can achieve the same high grades as natural diamonds across all 4Cs.
Lab Grown Diamonds: Pros and Cons
Pros:
- Lower Cost: Lab grown diamonds typically cost 30-50% less than comparable natural diamonds.
- Larger Size: The lower cost allows for purchasing a larger diamond for the same budget.
- Ethical Considerations: Lab grown diamonds bypass the environmental and social concerns associated with diamond mining.
Cons:
- Resale Value: Lab grown diamonds generally have a lower resale value compared to natural diamonds.
- Sustainability Concerns: While avoiding mining impacts, lab grown diamond production requires significant energy consumption.
GIA Certification for Lab Grown Diamonds
Just like natural diamonds, lab grown diamonds can be certified by the GIA. This certification provides an independent assessment of the diamond’s 4Cs, ensuring its quality and authenticity. GIA reports for lab grown diamonds clearly identify them as such, distinguishing them from natural diamonds.
Making the Right Choice: Lab Grown or Natural?
The decision between a lab grown and a natural diamond is ultimately a personal one. Factors to consider include budget, personal values, and the importance of resale value. If cost-effectiveness and ethical considerations are priorities, a lab grown diamond may be the ideal choice. If tradition and long-term investment value are paramount, a natural diamond might be preferred.
Consult with a reputable jeweler to discuss your individual needs and preferences to make the best decision for your unique situation.
