The boutique
C.R. Park, New Delhi
K-1/48, Lower Ground Floor
C.R. Park, New Delhi 110019
Wednesday to Monday, 11 am to 8 pm
Closed on Tuesdays
In the boutique, or by video from anywhere.
IGI certified
Verify your diamond
Every Diamos diamond comes with its own IGI report. Enter the report number to see it on IGI’s own register.
Opens IGI’s register in a new tab.
Gold, in every colour it comes.
Every Diamos piece is made in gold: eighteen, fourteen or nine karat, in yellow, white or rose. The gold is most of what you hold. It decides how a piece wears, how it feels in the hand and how it ages.
Gold, by the numbers
Every piece is tested and hallmarked by the Bureau of Indian Standards. How to check it
01 · The colours
All three are gold of the same purity. Their colour comes from the metals it is alloyed with.
Gold alloyed with silver and copper, keeping its natural warmth. The most traditional of the three, and the one that sets a white diamond in sharpest relief.
Gold alloyed with palladium and silver, then finished in rhodium for a bright, cool white. The metal recedes, and the stone takes the light.
Gold with a greater share of copper, which lends it a soft blush. Flattering against every skin tone, and quietly romantic beside a colourless stone.
02 · Purity
Karat counts gold in twenty-fourths. Pure gold, at twenty-four, is too soft to hold a diamond for long, so fine jewellery is made in alloys. Each of ours is chosen for a different life.
18K
750 · 75% gold
The richest colour and the greatest share of gold. A little softer than the others, with a satisfying weight in the hand, and the gentlest on sensitive skin.
Chosen forHeirlooms, engagement rings, sensitive skin, pieces worn with care
14K
585 · 58.5% gold
The balance of colour, strength and value. Hard enough for a ring worn every day, with a warm, true gold tone.
Chosen forEngagement and wedding rings, earrings, everyday pieces
9K
375 · 37.5% gold
The hardest-wearing and lightest of the three, with a paler, more delicate colour. Made for pieces that live an active life.
Chosen forEveryday stacking, active hands, sport and hands-on work, lighter budgets
Alloy figures are representative; every refiner's recipe differs slightly.
Twenty-two karat, 91.6% gold, is the traditional gold of Indian jewellery and beautiful in plain gold. Pure gold, at twenty-four, is softer still. Both bend and wear too readily to hold a diamond securely, so for anything set with stones we stop at eighteen.
More gold brings a richer colour, more weight and more value in the metal. Less gold gives a harder, lighter piece at a gentler price. Each karat is the right answer for someone.
Karat, written K, is the purity of gold. Carat, written ct, is the weight of a gemstone. They share a root, the carob seed once used for weighing, but measure different things.
03 · White gold
White gold owes its brightness to a fine plating of rhodium, a rare white metal of the platinum family. On a ring worn every day, the plating softens over a year or two where the metal meets the world, and a warmer tone begins to show beneath.
This is the nature of the metal rather than a flaw. A fresh plating, with a clean and polish, returns it to its first brilliance in about a day.
We alloy our white gold with palladium and silver, never nickel.
White gold, over time
Draw the line across the ring. On the left, white gold after a couple of years of daily wear, the warmer gold showing through. On the right, the same ring freshly plated.
After wearThe rhodium softens where the ring meets the world, and a warmer tone shows.
Re-platedA fresh plating, with a clean and polish, returns its first brilliance.
An illustration: the worn side is tinted to show the effect.
04 · Assurance
Karat cannot be seen. Every Diamos piece is therefore tested by an independent assaying centre licensed by the Bureau of Indian Standards, and struck with three marks.
The BIS mark
Tested by a licensed assaying centre, not by the jeweller.
18K750
Purity
The karat, and its gold content in parts per thousand.
AB12C3
HUID
A six-character code belonging to that piece alone.
To verify a piece, enter its HUID in the Bureau of Indian Standards' BIS CARE app, under "Verify HUID". It returns the purity, the type of article and the jeweller it was registered to. The marks shown here are an illustration.
05 · Value
The lasting value of a piece is the pure gold within it, which follows its weight and its karat. A ring of four grams in fourteen karat holds 2.34 grams of pure gold. Made in eighteen karat, the same design weighs a little more and holds over three and a half.
When you exchange a Diamos piece, we credit the full value of that gold, at the day's rate, for as long as you own it.
Our lifetime exchange
06 · Care
Gold does not rust or tarnish, which is why it passes so easily between generations. It asks only a little care.
07 · The workshop
Every design can be made in any of our three golds and three karats. Each is made to order, and passes through many pairs of hands before it reaches yours.
I
Each design begins as a precise wax model. Waxes are joined onto a central stem, a casting tree, so many pieces can be cast at once.
II
The tree is set in plaster and the wax melted out, leaving a perfect mould. Gold of your chosen karat and colour is poured in to take its place.
III
Each piece is filed, assembled and polished by hand. Stones are set one at a time, every claw pushed and shaped around its diamond. White gold is then plated in rhodium.
IV
Before it reaches you, the piece goes to a BIS-licensed assaying centre, where its gold is tested and it is marked with its purity and its own HUID.
For an engagement ring or anything worn daily, most of our clients choose fourteen karat for its balance of colour and strength. Eighteen karat gives the richest colour and is kindest to sensitive skin. Nine karat is the hardest-wearing and the most accessible.
Yes. It is 37.5% pure gold and hallmarked like every other karat. It is paler and lighter than fourteen or eighteen, and harder wearing.
The rhodium plating has worn where the ring meets the world, and the gold beneath is showing. A fresh plating restores the bright white.
Most people wear it without any trouble. It contains more copper, which a small number of people react to; eighteen karat, with less copper, is the gentler choice.
Yes. Ask us when you order. Unplated white gold has a softer, slightly warm grey tone, and never needs re-plating.
Gold itself does not tarnish. The other metals in lower karats can occasionally darken a little with some skin chemistry or chlorine, but this cleans away.
Yes. Every Diamos design can be made in yellow, white or rose gold, in nine, fourteen or eighteen karat.
Find the six-character HUID on the piece and enter it in the BIS CARE app under "Verify HUID".
