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Cosima solitaire engagement ring setting, white gold, Luma Jewellery

Cosima

£670
  • Cosima solitaire engagement ring setting, white gold, Luma Jewellery
  • Cosima solitaire engagement ring setting, white gold, Luma Jewellery
  • Cosima solitaire engagement ring setting, white gold, Luma Jewellery
  • Cosima solitaire engagement ring setting, yellow gold, Luma Jewellery
  • Cosima solitaire engagement ring setting, rose gold, Luma Jewellery
  • Cosima solitaire engagement ring setting, white gold, Luma Jewellery
  • Cosima solitaire engagement ring setting, yellow gold, Luma Jewellery
  • Cosima solitaire engagement ring setting, rose gold, Luma Jewellery
  • Cosima solitaire engagement ring setting, white gold, Luma Jewellery
1 9

Cosima

Cosima

£670 GBP
£670 GBP
Sale Pre-order
Taxes included. Shipping calculated at checkout.

Choose your timeline

All Luma rings are handcrafted to order in our Hatton Garden workshop.

Choose your setting

Select your preferred metal and ring size. Not sure of your size? Choose "I'll decide later" and we'll confirm before we begin crafting.

Metal
Ring Size

Choose your diamond

Browse certified lab-grown diamonds. Set your preferences and hit Browse, then select your stone.

✦ Lab Grown · IGI Certified
Available Shapes
Carat Size — select one or more
Clarity — select all that apply
FLIFVVS1VVS2

FL to VVS2 — all premium, eye-clean stones.

Colour — select all that apply
DEF

D–F are colourless — the finest available.

Review your order

Your ring will be handcrafted to these exact specifications in our Hatton Garden workshop.

Ring Setting
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Metal — Edit
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Diamond
Shape — Edit
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Price includes your chosen diamond specification and setting. A 50% deposit is required to begin crafting. Our team will be in touch to confirm details and arrange payment.

Made in Hatton Garden
Ethically sourced
IGI certified
Secure checkout
Questions about this piece? Message us on WhatsApp and one of us will get back to you.
Description

Sunday lunch at hers means twelve people at a table built for eight. Someone brings a cousin, the chairs never match, and the roast is out before anyone thinks to offer help. Cosima is a round lab grown diamond engagement ring setting for a life that full: a diamond of your choice held in a four claw setting, lifted on a fine gallery with hidden accents. The band is set with graduating round lab grown diamond side stones that taper toward the centre, giving a flowing silhouette with presence and precision.

This setting is fully customisable in our ring builder, where you select your centre diamond and your metal.

Available in 9k, 14k or 18k gold, in white, yellow or rose, or 950 platinum. The setting starts at £670 and holds a round brilliant centre stone from 0.5ct to 3.0ct. You choose your IGI certified lab grown diamond separately and we price it live when you select it.

Designed in Hatton Garden, hallmarked at the London Assay Office and made to order in 4 to 6 weeks.

Our lab grown diamonds
Every diamond we set is lab grown, with the same physical and optical properties as a mined stone. The centre stone in every engagement ring comes with an IGI certificate. Our stones come straight from our own wholesale supply, so you pay closer to the source, and we check each one by hand in Hatton Garden before it is set.
Shipping and returns
Every piece is made to order in our Hatton Garden studio and finished for you. Engagement rings take 4 to 6 weeks to make, counted from the day we confirm your order, and a full bespoke commission takes 6 to 8 weeks from the day you sign the design off. Ready to ship pieces are dispatched within 1 to 2 business days, fully insured and tracked. Return most pieces within 14 days for store credit, with refunds on ready to ship pieces within 14 days under UK consumer law.
Our promise
You pay our direct price, without the high street markup. Every piece carries a 1 year manufacturing warranty, and engagement rings include one free resize in the first year.
Size and fit
Each piece is made to order in your size. If you are between sizes or not sure of your size, contact us and we will make it to suit you.
5.0 ★★★★★
10 reviews on Google
Trustpilot

Sunday lunch at hers means twelve people at a table built for eight. Someone brings a cousin, the chairs never match, and the roast is out before anyone thinks to offer help. Cosima is a round lab grown diamond engagement ring setting for a life that full: a diamond of your choice held in a four claw setting, lifted on a fine gallery with hidden accents. The band is set with graduating round lab grown diamond side stones that taper toward the centre, giving a flowing silhouette with presence and precision.

This setting is fully customisable in our ring builder, where you select your centre diamond and your metal.

Available in 9k, 14k or 18k gold, in white, yellow or rose, or 950 platinum. The setting starts at £670 and holds a round brilliant centre stone from 0.5ct to 3.0ct. You choose your IGI certified lab grown diamond separately and we price it live when you select it.

Designed in Hatton Garden, hallmarked at the London Assay Office and made to order in 4 to 6 weeks.

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Cosima
£670