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Loupe — Hatton Garden, London

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Diamond colour · D to J

Colour, in daylight.

Most shops show a stone under spotlights, where every grade looks white. We show it by the window. Slide from D to J and watch the warmth come in — then decide what you actually see.

Choose a stone How we grade
A round solitaire in a four-claw platinum setting, photographed in daylight
Grade G · near colourless
ColourlessNear colourlessFaint warmth

What a grade costs you.

Same stone, one carat, round, VS1, excellent cut. Only the colour changes. Most people can’t tell G from F once it’s set — the price can.

  1. D£12,400
  2. E£10,900
  3. F£9,800
  4. G£8,600
  5. H£7,400
  6. I£6,300
  7. J£5,400

Guide prices from today’s parcel · VAT included · G saves £3,800 against D

Ready to wear.

See every stone on the parcel →
A stacked engagement ring and wedding band set on a hexagonal stand
Nº 01

The Wren set

Oval 0.90 ct · E · VS2 · pavé band · platinum

£7,860

A two-stone crossover ring in yellow and white gold
Nº 02

Toi et moi

2 × 0.40 ct · F · VS1 · 18k two-tone

£4,120

A pair of round halo diamond earrings
Nº 03

Halo studs

2 × 0.50 ct · G · VS2 · 18k white

£5,480

Four numbers, one stone.

Carat
1.00
Weight, not size. A well-cut 0.90 can face up larger than a deep 1.00.
Cut
EX
The only grade made by hand. It decides how much light comes back to you.
Colour
G
D is ice, J is candle-light. Set in yellow gold, H looks like F.
Clarity
VS1
Marks you need a 10× loupe to find. We show you where they are.
Two hands, one wearing a new engagement ring
“We saw the stone by the window before we ever saw the ring. That’s when we knew it was ours.”
Priya & Tom · oval 1.04 ct · F · VS1 · collected May 2026

See it by the window.

Next free chairs · Hatton Garden

Book this chair

60-minute sitting at the bench · free · we hold it for 24 hours

The atelier

27 Greville Street, London EC1N 8SU

+44 20 7946 0213 · bench@loupe.studio

Tue – Sat · 10:00 – 18:00