Radiant Cut Solitaire Engagement Ring
The radiant cut combines the brilliance of a round diamond with the geometry of a square — giving you fire and facets in equal measure. Set in a clean 18k white gold band, this solitaire is for those who want presence without fuss. Architectural, striking, and completely timeless.
Centre stone: 1ct radiant lab-grown diamond, IGI-certified, DEF colour, VS+ clarity. Price is a guide for 1ct — final price varies with carat weight.
All designs feature DEF VS+ lab grown diamonds unless stated otherwise.
Crafted to order. Each Rinn piece is made in 18K solid gold with an IGI-certified lab-grown diamond. Please allow three to four weeks before your piece ships. Learn about our process →
Materials & Certification
Every Rinn piece is made in 18K solid gold or platinum, never plated, so it keeps its colour
and wears beautifully for a lifetime. Our diamonds are lab-grown, DEF in colour
and VS+ in clarity, and every centre stone is IGI-certified. Lab-grown diamonds
are chemically, optically, and physically identical to mined diamonds, with none
of the ethical ambiguity and none of the inflated markup. Your certification is
included with your piece.
Shipping & Delivery
Complimentary worldwide shipping on every order. As each piece is made to order,
please allow three to four weeks for yours to be crafted before it ships. You
will receive tracking as soon as it is on its way, and we will keep in touch
personally along the journey. International orders may be subject to local
customs or duties, which are set by the destination country.
Returns & Care
Because each piece is made to order for you, made-to-order and personalised
pieces are final sale. Even so, we want your piece to feel perfect. We offer
complimentary resizing within 30 days of delivery, and we are happy to arrange
an exchange for store credit within 14 days on non-personalised pieces. If your
piece ever arrives damaged or not as it should be, contact us within 7 days at
hello@rinn.sg and we will make it right at no cost to you.
To care for your piece, store it away from moisture and perfume, and give it an
occasional gentle clean with a soft cloth.
Ring Sizing
Not sure of your size? For the most accurate fit, we recommend being sized by a
local jeweller, or measure a ring you already wear and compare it to a sizing
chart. If you are between sizes or unsure, email hello@rinn.sg and we will help.
Every ring includes complimentary resizing within 30 days, so you can order with
confidence.
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