Most people walk into a jewellery store knowing almost nothing about diamonds — and walk out having spent lakhs on something they don't fully understand. That is not their fault. Nobody taught them.
I grew up in a family that has been cutting, setting, and selling diamonds for over a century. The knowledge I have access to is not available in most stores — because an educated buyer is harder to oversell. This guide changes that.
The Myths — Debunked
"A bigger diamond is always a better diamond."
Cut quality matters far more than carat size. A brilliantly cut 0.5ct diamond will outsparkle a poorly cut 1ct stone every single time. The cut determines how light travels through the diamond — that is what creates the fire and brilliance you actually see.
"Higher clarity means a more beautiful diamond."
Anything above SI1 clarity is invisible to the naked eye. The tiny inclusions (internal flaws) that differentiate a VS2 from an SI1 require 10× magnification to see. You are paying thousands extra for imperfections you will never see while wearing the diamond.
"A certified diamond is a good diamond."
A certificate tells you what a diamond is — not whether it is a good buy at that price. GIA and IGI certificates confirm the grade, but they don't tell you if you are overpaying, if the cut is flattering, or if the stone looks beautiful in person. Certification is the starting point, not the finish line.
"D-colour diamonds are the best — always buy D."
The difference between D and G colour is invisible once the diamond is set. Diamond colour is graded face-down against a white background — not in a ring, not on a hand. Once set in yellow or rose gold, even an H-colour stone looks perfectly white to the human eye. D-colour commands a massive premium for a difference you cannot see in real life.
"All jewellers charge the same for the same diamond."
Pricing varies enormously — and almost everything has room for transparency. Making charges, stone markup, wastage, and retail margins are all layers that different jewellers handle differently. A 0.5ct GIA-certified diamond can be priced anywhere from ₹60,000 to ₹1,20,000 at different stores in the same city — for the same certificate grade.
Surabhi's Take
"The jewellery industry profits from confusion. The more complicated it seems, the harder it is for you to push back on price or question quality. I built Rubeli to reverse that — because the most powerful thing you can do before buying a diamond is understand what you are actually looking at."Surabhi Agarwal
Before you buy — 3 things to always do
Ask for the 4Cs in writing. Cut, Colour, Clarity, Carat — with grades, not just descriptions. Any jeweller confident in their diamond will give you this.
See the stone in natural daylight. Step outside or near a window. Diamonds look different under artificial light — that is by design.
Ask what the resale policy is. A transparent answer tells you a lot about the jeweller's confidence in their own pricing.
Quick reference — what actually matters
"Still have questions? Just ask me."
Every question you have is valid. There is no such thing as too basic when it comes to spending this kind of money. Message me and I will answer honestly.
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