Natural vs Lab-Grown Diamonds: An Honest Comparison for 2026
Lab-grown diamonds have become one of the biggest topics in jewellery. They look like natural diamonds, cost much less, and are now widely available in India. But are they the right choice for you? This guide compares natural and lab-grown diamonds honestly, so you can decide.
How each is made
Natural diamonds formed deep inside the Earth over hundreds of millions to billions of years, under intense heat and pressure, and were brought closer to the surface by volcanic activity. They are mined, then cut and polished.
Lab-grown diamonds are created in a laboratory, using one of two main methods:
- HPHT (high pressure, high temperature), which recreates the conditions deep in the Earth,
- CVD (chemical vapour deposition), where diamond is built up layer by layer from a carbon-rich gas.
Both processes produce real diamonds, not imitations like cubic zirconia or moissanite.
Look and durability
Natural and lab-grown diamonds are made of the same material, crystallised carbon, and have the same physical and optical properties. They are equally hard, equally durable and equally brilliant. To the naked eye, they look identical.
The difference can only be detected with specialised equipment. For this reason, gemmological laboratories identify whether a diamond is natural or laboratory-grown on their reports. Read IGI vs GIA Certificates.
Price
This is the biggest difference. Lab-grown diamonds cost significantly less than natural diamonds of similar size and quality, and their prices have fallen considerably as production has grown.
This means you can buy a larger or higher-grade lab-grown diamond for the same budget as a smaller natural diamond.
Resale and heirloom value
This is where natural diamonds have a clear advantage:
- Natural diamonds are finite, and they generally hold value better over time. Many jewellers offer exchange or buyback on natural diamonds, though terms vary. Read Gold Buyback and Exchange Policies.
- Lab-grown diamonds can be produced in large quantities, and their prices have been falling. Their resale value is currently much lower, and many jewellers do not buy them back.
If you think of jewellery as something to pass down, or as a store of value, this difference matters. Many Indian families see bridal and heirloom jewellery this way.
How to decide
Natural diamonds may suit you if:
- you value rarity and natural origin,
- you want jewellery to hold value over time,
- the piece is for a wedding, engagement or future heirloom.
Lab-grown diamonds may suit you if:
- you want the look of a larger diamond on a smaller budget,
- resale value matters less to you,
- the piece is for everyday or fashion wear.
Whichever you choose:
- make sure the diamond is clearly identified as natural or laboratory-grown, on both the certificate and the invoice,
- understand the jeweller's exchange and buyback terms before you buy,
- compare quality using the 4Cs. See The Diamond 4Cs for Indian Buyers.
At Tibarumal & Sons Jewellers, Shaikpet, we are happy to answer your questions about diamonds and help you understand exactly what you are buying.
Visit Tibarumal & Sons Jewellers, Shaikpet
Tibarumal & Sons Jewellers
Shop No. 102, 8-1-299/121, RP Business Park, Al Hamra Colony, Shaikpet, Hyderabad 500008
Hours: Monday to Saturday, 11am to 8:30pm
Phone: +91 88855 00805
WhatsApp: Message us on WhatsApp
Instagram: @tibarumalandsons
