The Buyback Question Nobody Asks at the Counter
Walk into almost any lab-grown diamond store in Bangalore — Jayanagar, Indiranagar, HSR Layout — and the conversation will center on carat weight, cut grade, and price per cent. That is the right conversation to have. But there is a second conversation, usually skipped, that determines how a purchase holds up years later: what does the jeweller actually commit to once the sale is done?
Lab-grown diamond prices have declined sharply since 2020. Per Edahn Golan Diamond Research and BriteCo’s November 2025 report, wholesale prices for a 1-carat lab-grown stone fell 74% between January 2020 and December 2024, dropping from roughly $3,410 per carat to $892. That trajectory matters for resale because a buyer in the secondary market always prices against what a new stone of the same quality costs today — and new stones keep getting cheaper. On the open secondary market in India in 2026, a realistic recovery rate is 20 to 40 percent of the original retail purchase price, and some jewellers will not buy back lab-grown stones at all.
So the buyback policy a Bangalore retailer offers is not a footnote — it is a material part of the purchase price calculation. A ₹50,000 piece with an 80% cash buyback has a different financial profile than a ₹45,000 piece with no written buyback at all. The arithmetic on this is straightforward: the jeweller’s after-sales commitment changes the effective cost of ownership, particularly if you plan to upgrade or exchange the piece within a few years.
And yet, in Bangalore’s growing lab-grown diamond market, written buyback terms are still far from standard. Verbal promises at the counter are common. Policies that exist only as website text — with no mention on the invoice — are common. Policies that apply only to exchange credit, not cash, are common. Understanding the difference between these structures is the first thing to get right before you buy.
Cash Buyback vs. Exchange Credit: Two Very Different Commitments
Every buyback policy has two distinct components, and they are almost always different. Conflating them is how buyers end up surprised.
Cash buyback means the jeweller purchases the piece from you and pays you money — a stated percentage of the original purchase price, or of the current market value (these are not the same thing, and the difference matters enormously). Exchange credit means the jeweller gives you store credit toward a new purchase at a stated percentage. Exchange-only policies are not without value, but they lock your investment into a single retailer without giving you the option of realising its value as cash. If you move cities, if the retailer changes ownership, or if you simply want cash rather than a new piece, exchange-only credit does not help you.
The valuation basis is equally important. Some retailers offer a stated percentage but base it on the current market valuation of the piece rather than the original purchase price. Given that lab-grown diamond prices have fallen 74% since 2020, a buyback calculated against
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