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3ct Oval Cut Lab Grown Diamond Ring in Platinum (F Color, VS2 Clarity)

Elevate your elegance with our stunning 3-carat Oval Cut Lab Grown Diamond Ring. Featuring a ... Show More

£5,497.00 £6,599.00
You save 17% (£1,102.00)

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Easy Returns

Lifetime Warranty

1 in stock

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Do you want a ring with a different weight, colour or clarity? Contact us

Custom Built Rings Made Just For You

At Pure Lab Diamonds, we take pride in our legacy of excellence established by our co-founder, Howard Levine, the pioneer who first brought lab-grown diamonds to the UK. Howard's vision ensures each of our diamond rings is custom-built to perfection, UK-designed, and UK-manufactured. With a delivery time between 2-21 days, we keep you updated on progress weekly. We provide insured shipping and guarantee a lifetime of quality. Trust in our heritage and craftsmanship for your special moments.

All of our diamonds come with a diamond grading report.

We can guarantee that all of our diamond rings come with a minimum grade GVF+ certification.

All of our diamond rings are lab grown diamonds which are 100% conflict free and environmentally friendly.

Rings for Every Occasion

Minimalist, timeless and modern designs with a focus on all things bright, geometric and eye-catching.

Shop our collections

Best Sellers

This collection contains our top selling rings from our customers!

Classic Engagement Rings

Our timeless, classic engagement ring collection.

Rings Below £1000

Minimalist rings that are good on their own and stacked together!

Request a Free Ring Sizer

If you are unsure of your ring size, we are happy to send you a complimentary ring sizer so that you can easily measure your ring size at home. Once payment has been made, you will receive an email confirming the order and asking if you know your ring size. If you don’t, we will ship out a complimentary ring sizer for you. Once received, email us the correct size and we will start making your order.

Ring sizers shipped to the UK will arrive withing 3-5 days. Ring sizers sent to Europe, Canada, US and Australia will take longer.

If the ring isn’t for you

If you are buying a ring as a surprise, ask your significant other’s friends or mother if they know her finger size. Borrow one of your significant other’s rings (from the correct finger) and use our UK Ring Size Chart to measure the ring and determine its correct size.

US Ring Size Chart

If you are based in the US and aren't sure what size ring you are, please download our US Ring Size Chart to find your exact size.

International size conversion

If ordering from outside of the UK, determine your ring size according to your country’s standard. Then download our International Ring Size Converter to convert to the corresponding UK ring size to place your order below.