Platinum Marquise Cut Lab Grown Diamond Signet Ring
A modern interpretation of the classic signet ring, this design showcases a marquise-cut lab-grown diamond, seamlessly flush set within a softly sculpted platinum silhouette. Clean lines and considered proportions create a timeless engagement ring with a contemporary edge.
This ring is made to order and can be tailored to your vision. Get in touch with our Bespoke team to create something truly personal.
Ethical Lab Grown Diamonds
Design Details
Made to Order
Delivery & Returns
DELIVERY
United Kingdom
- UK Standard Delivery - £6 or FREE for orders from £250
- UK Next Day Delivery (order by 1pm Mon-Fri) - £10 or FREE for orders from £500
- To collect your order from one of our London stores, select "Collect in store" at checkout.
International Shipping
See all global rates and details.
RETURNS
Please send your return to us within 14 days of receiving your order. Custom size items are not eligible for return. See our delivery and returns page for more information.
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OUR ENGAGEMENT RINGS
Our engagement rings are handcrafted using recycled precious metals and ethically sourced gemstones, including both natural and lab-grown diamonds. Defined by clean lines and timeless settings, each design is created to highlight the beauty and brilliance of the stone while remaining refined enough for everyday wear.
Rooted in thoughtful craftsmanship and modern simplicity, every style can also be recreated through our bespoke service - allowing the diamond, setting and proportions to be tailored to your vision.
ENGAGEMENT RING FAQ
Lab-grown diamonds are real diamonds created in controlled laboratory environments that replicate the natural conditions in which diamonds form. They share the same physical, chemical and optical properties as mined diamonds, offering the same brilliance, durability and sparkle.
Yes. Lab-grown diamonds are an excellent choice for engagement rings as they offer the same hardness, brilliance and longevity as natural diamonds. Their durability makes them well suited to rings designed to be worn every day.
Both lab-grown and natural diamonds are made from crystallised carbon and share the same physical and optical properties. The difference lies in their origin: natural diamonds form underground over millions of years, while lab-grown diamonds are created in controlled laboratory environments.
These engagement rings are crafted in recycled 9ct solid gold. Pure gold is alloyed with other metals to create a stronger, more durable material suited to everyday wear while maintaining its rich colour and lasting quality.
Yes. All engagement rings can be adapted through our bespoke service. Our jewellers can tailor the diamond size, setting style or band proportions to create a ring that reflects your personal vision.