Two Numbers on a Policy Page That Mean Very Different Things
Most lab-grown diamond brands in Bangalore now advertise some version of a buyback or exchange promise. You’ll see figures like
What Cash Buyback Actually Means — and What It Doesn’t
A cash buyback is a commitment by the retailer to purchase your piece back from you in exchange for actual money — not store credit, not a discount on your next purchase. The percentage quoted (commonly 80% in the Indian market) refers to the prevailing market price of the diamond component at the time of return, not the price you originally paid.
This distinction matters more than it sounds. Lab-grown diamond prices in India have declined significantly since 2020 as production technology scaled rapidly. That means if you paid ₹50,000 for a diamond two years ago, the 80% buyback is calculated on what that same quality stone costs today in the wholesale market — which may be lower than your original purchase price. A retailer offering 80% cash buyback is not promising to return 80% of what you spent. They’re promising 80% of the current market value of the stone.
So the actual cash you receive could be less than 80% of your original bill, depending on how market prices have moved. This isn’t a deceptive practice — it’s simply how commodity-linked buybacks work. The important thing is to understand it before you sign the invoice.
For the gold component, the calculation tends to be more straightforward. Gold has a transparent daily market price, and most reputable brands — including ONYA Diamonds — apply current gold rates to that portion of the piece. The uncertainty in a buyback sits almost entirely with the diamond component, not the metal.
What Exchange Credit Actually Means — and Why Brands Prefer It
Exchange credit (also called lifetime exchange or 100% exchange) is a different arrangement entirely. Instead of receiving cash, you return your piece and receive its value as credit toward a new purchase at the same brand. Most leading brands offer 100% exchange — meaning the full value of your original diamond is credited toward your upgrade.
The reason brands prefer this model is straightforward: they keep you as a customer. When you exchange rather than cash out, the retailer doesn’t need to resell your returned stone in a competitive open market. They can factor that retained customer relationship into the economics. That’s why exchange credit percentages are typically higher than cash percentages — the two aren’t equivalent offers, even when the numbers look similar.
For buyers planning to upgrade — say, moving from a 0.5-carat solitaire to a 1-carat stone for an anniversary — exchange credit is often the better route. You get more value from the transaction, and you stay within a brand ecosystem you already trust. For buyers who genuinely need liquidity (you want actual money, not jewellery), cash buyback is the relevant policy to scrutinise.
The practical mistake many Bangalore buyers make is treating a
How ONYA Diamonds Structures Its Policy
ONYA Diamonds offers 100% lifetime exchange and 80% cash buyback on its lab-grown diamond jewellery — including on custom-designed pieces, which is less common in the category. The exchange policy is documented at onyadiamonds.com/pages/exchange-policy and the buyback terms at onyadiamonds.com/pages/buyback-policy.
The 80% cash buyback applies to the diamond component at prevailing market rates. The 100% exchange means the full value of your ONYA diamond is credited when you upgrade or swap to a new piece. For customers buying lab-grown diamond rings or mangalsutras as long-term pieces they may want to upgrade later, the exchange route preserves the most value.
ONYA also extends these policies to its entire range — earrings, pendants, bracelets, necklaces — and backs every piece with IGI certification and BIS hallmarked gold. The certification matters at buyback time because, as most serious retailers confirm, the original IGI certificate is required to process any exchange or return. Keep it safe.
What to Ask Any Jeweller Before You Buy
The buyback conversation is best had before the purchase, not after. A jeweller confident in their policy answers these questions in writing without hesitation:
1. Is the buyback in cash or exchange credit? These are not the same thing. Get clarity on which one applies and whether you can choose.
2. What percentage applies to the diamond, and what applies to the gold? Policies often split these. Gold is typically valued at current market rates; the diamond percentage varies by brand.
3. Is the percentage based on your original purchase price or the current market price of the stone? For lab-grown diamonds specifically, this distinction can significantly affect your actual return, given that prices have moved over the past few years.
4. Does the policy apply to custom pieces? Many brands limit buyback to catalogue items. If you’re commissioning a bespoke design, confirm explicitly.
5. What documents do you need to bring? Almost universally: the original IGI certificate, the purchase invoice, and the brand’s warranty card. Losing any of these can complicate the process.
6. Is there a time limit? A policy that only applies within six to twelve months is not a meaningful long-term commitment. Lifetime policies — the standard among reputable Bangalore brands in 2026 — are what you should expect.
And finally: get it in writing. A verbal assurance at point of sale is not a policy. A written document, ideally linked from the brand’s website, is.
Bangalore’s lab-grown diamond market has matured enough in 2026 that clear, written policies are table stakes among serious players. If a showroom on Brigade Road or Jayanagar can’t point you to a published policy page, that’s the answer you need.
