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Metal Guide
What your Carat Hills piece is made of
Every piece is 925 sterling silver. Not silver-plated. Not silver-tone. Not brass with a coating that wears off in three months. 925, all the way through.
92.5%
Pure silver
7.5%
Copper, for strength
HUID
Unique code on every piece
What 925 actually means
Pure silver is too soft to hold a stone or survive daily wear — it bends. So it is alloyed: 92.5% pure silver, 7.5% copper. That is sterling silver, and 925 is the number stamped on it. Same standard used everywhere in the world.
The copper is what gives sterling its strength. It is also what makes it tarnish. Both of those are features, not faults.
The hallmark, and your HUID
Silver hallmarking in India is voluntary. There is no law forcing us to do it and no penalty for skipping it. That is precisely why most silver brands skip it.
We hallmark anyway. Every piece carries a BIS Standard Mark, its purity grade, and a HUID — a Hallmark Unique ID that belongs to your piece and no other. Type it into the BIS Care app and it will tell you the article type, the purity grade, the date it was hallmarked, and which assaying centre did it.
BIS only opened HUID hallmarking to silver in September 2025, and only on a voluntary basis. We took it up from day one.
We are not asking you to trust us. We are handing you a way to check.
How to verify your HUID
The finish
Most pieces in this collection are finished in gold plating over the 925 silver. Some carry a white rhodium finish — rhodium is a platinum-family metal that makes silver brighter, whiter and slower to tarnish. Every product page tells you which finish that piece has.
Gold plating over 925 silver — warm finish
White rhodium finish — bright silver-white
Read this part, because most brands are vague about it
Plating is a finish. It is not the metal. Under it is 925 silver, and it stays 925 silver.
On pieces worn every day, the plating on high-friction surfaces — the inner band of a ring, the back of a stud, the underside of a bracelet — will gradually thin. Depending on how you wear it, that takes anywhere from several months to a couple of years. It is normal wear, not a defect, and no brand's plating is exempt from it, whatever they tell you.
Re-plating service
When the finish does wear, we re-plate it. Available on any Carat Hills piece six months or more after purchase.
Step 1
Write to us with your order number and a photo of the piece.
Step 2
Post the piece to our Jaipur workshop at the address we send you.
Step 3
We re-plate, polish and check the stone setting.
Step 4
It ships back to you looking the way it did on day one.
Charges: Rs. 459. Turnaround: 7-10 working days from the day it reaches us.
Gold-toned is not gold
Where a piece is described as a gold finish, it is 925 silver with gold plating. It is not gold. We say it on the product page, we say it here, and we will never use the word "gold" to make silver sound like something it isn't.
We do not sell gold jewellery.
What we don't use
No brass or copper base metal.
No "silver-plated" anything.
No cubic zirconia. Not at any price, not in any design.
Why we refused CZSilver tarnishes — and that's useful
Sterling silver darkens over time. It is reversible in about two minutes with a polishing cloth, and it is one of the simplest ways to tell real silver from plated brass: brass doesn't tarnish the way silver does, it just wears through to a different colour underneath.
How to care for your silver