Lab Grown vs Natural Diamond
Lab grown diamonds are 30-70% cheaper and chemically identical. Here is the honest comparison to help you decide.
What Are Lab Grown Diamonds?
Lab grown diamonds are real diamonds — identical in chemical, physical, and optical properties to mined diamonds. They are grown in weeks using either HPHT (High Pressure High Temperature) or CVD (Chemical Vapor Deposition) processes. GIA and IGI both certify them.
Side-by-Side Comparison
| Factor | Lab Grown | Natural Mined |
|---|---|---|
| Price (1ct, VS, G) | $1,500–$3,000 | $5,000–$10,000+ |
| Appearance | Identical | Identical |
| Resale Value | Very low | Modest but higher |
| Ethical Impact | Zero mining impact | Varies by source |
| Certification | IGI / GIA | GIA / IGI / AGS |
When to Choose Lab Grown
Choose lab grown if you want a larger or better stone for the same budget, if ethical sourcing is important, or if you simply do not want to pay mining markup. It is an excellent value for everyday jewelry.
When to Choose Natural
Choose natural if you care about resale value, investment appeal, or the romantic story of a million-year-old stone. Natural diamonds also hold their value better over decades.
Tonglin Recommendation
We offer both. For engagement rings under $5,000, lab grown is the smarter choice — you can get a 2ct stone for the price of a 1ct natural. Ask us for a quote on either option via our Get a Quote page.
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Factory-direct pricing from our Panyu, Guangzhou workshop. Our team will reply within 24 hours with pricing and availability.
Get a Free Quote Chat on WhatsAppFrequently Asked Questions
Are lab grown diamonds real diamonds?
Yes. They are 100% crystallized carbon, optically identical to mined diamonds. Even gemologists need special equipment to tell them apart.
Do lab grown diamonds hold value?
Generally no. Prices have dropped as production scales up. Buy lab grown for beauty and value, not as an investment.
Which certification is best for lab grown diamonds?
IGI is the industry standard for lab grown diamonds. GIA also certifies them but at a premium.