Ladies Platinum Engagement Rings

Explore our stunning collection of women’s platinum engagement rings and find an opulent array of sparkling diamonds, classic aesthetics and beautiful finishes. Versatile enough to be paired with any outfit, our platinum engagement rings for women make an ideal choice as their elegance is truly timeless. Our expertly crafted selection features a wide variety of new and pre-owned styles, along with an array of gemstone shapes and sizes for you to find your perfect fit. We can also offer you the best wedding ring to match, so browse our extensive range of ladies platinum jewellery and let us take care of the details.
216 Items
950 Platinum Diamond Engagement Ring - Size M½ - 1.00ct
950 Platinum Diamond Engagement Ring - Size M½ - 1.00ct
950 Platinum Diamond Engagement Ring - Size M½ - 1.00ct
950 Platinum Diamond Engagement Ring - Size M½ - 1.00ct
950 Platinum Diamond Engagement Ring - Size M½ - 1.00ct
950 Platinum Diamond Engagement Ring - Size M½ - 1.00ct
Miltons Diamonds
950 Platinum Diamond Engagement Ring - Size M½ - 1.00ct
£5,950.00
950 Platinum Diamond Halo Ring - Size L½ - 0.44ct
950 Platinum Diamond Halo Ring - Size L½ - 0.44ct
950 Platinum Diamond Halo Ring - Size L½ - 0.44ct
950 Platinum Diamond Halo Ring - Size L½ - 0.44ct
950 Platinum Diamond Halo Ring - Size L½ - 0.44ct
Miltons Diamonds
950 Platinum Diamond Halo Ring - Size L½ - 0.44ct
£1,395.00
3.30ct Platinum Certified Oval Diamond Engagement Ring - D/VVS2
3.30ct Platinum Certified Oval Diamond Engagement Ring - D/VVS2
3.30ct Platinum Certified Oval Diamond Engagement Ring - D/VVS2
3.30ct Platinum Certified Oval Diamond Engagement Ring - D/VVS2
3.30ct Platinum Certified Oval Diamond Engagement Ring - D/VVS2
3.30ct Platinum Certified Oval Diamond Engagement Ring - D/VVS2
3.30ct Platinum Certified Oval Diamond Engagement Ring - D/VVS2
Miltons Diamonds
3.30ct Platinum Certified Oval Diamond Engagement Ring - D/VVS2
£2,495.00
Ladies GIA Certified 0.60ct Diamond Platinum Ring - Colour D
Ladies GIA Certified 0.60ct Diamond Platinum Ring - Colour D
Ladies GIA Certified 0.60ct Diamond Platinum Ring - Colour D
Ladies GIA Certified 0.60ct Diamond Platinum Ring - Colour D
Ladies GIA Certified 0.60ct Diamond Platinum Ring - Colour D
Ladies GIA Certified 0.60ct Diamond Platinum Ring - Colour D
Ladies GIA Certified 0.60ct Diamond Platinum Ring - Colour D
Ladies GIA Certified 0.60ct Diamond Platinum Ring - Colour D
Miltons Diamonds
Ladies GIA Certified 0.60ct Diamond Platinum Ring - Colour D
£2,145.00
950 Platinum Diamond Engagement Ring - Size N - 0.48ct
950 Platinum Diamond Engagement Ring - Size N - 0.48ct
950 Platinum Diamond Engagement Ring - Size N - 0.48ct
950 Platinum Diamond Engagement Ring - Size N - 0.48ct
950 Platinum Diamond Engagement Ring - Size N - 0.48ct
Miltons Diamonds
950 Platinum Diamond Engagement Ring - Size N - 0.48ct
£1,495.00
Ladies Platinum 1.10ct Certified Diamond Engagement Ring - J/VS1
Ladies Platinum 1.10ct Certified Diamond Engagement Ring - J/VS1
Ladies Platinum 1.10ct Certified Diamond Engagement Ring - J/VS1
Ladies Platinum 1.10ct Certified Diamond Engagement Ring - J/VS1
Ladies Platinum 1.10ct Certified Diamond Engagement Ring - J/VS1
Ladies Platinum 1.10ct Certified Diamond Engagement Ring - J/VS1
Ladies Platinum 1.10ct Certified Diamond Engagement Ring - J/VS1
Miltons Diamonds
Ladies Platinum 1.10ct Certified Diamond Engagement Ring - J/VS1
£2,750.00
950 Platinum Diamond Engagement Ring - Size J - 0.37ct
950 Platinum Diamond Engagement Ring - Size J - 0.37ct
950 Platinum Diamond Engagement Ring - Size J - 0.37ct
950 Platinum Diamond Engagement Ring - Size J - 0.37ct
950 Platinum Diamond Engagement Ring - Size J - 0.37ct
950 Platinum Diamond Engagement Ring - Size J - 0.37ct
950 Platinum Diamond Engagement Ring - Size J - 0.37ct
Miltons Diamonds
950 Platinum Diamond Engagement Ring - Size J - 0.37ct
£495.00
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Platinum Diamond Solitaire Engagement Ring - Size N½ - 0.33ct
Platinum Diamond Solitaire Engagement Ring - Size N½ - 0.33ct
Platinum Diamond Solitaire Engagement Ring - Size N½ - 0.33ct
Platinum Diamond Solitaire Engagement Ring - Size N½ - 0.33ct
Platinum Diamond Solitaire Engagement Ring - Size N½ - 0.33ct
Miltons Diamonds
Platinum Diamond Solitaire Engagement Ring - Size N½ - 0.33ct
£695.00
950 Platinum Diamond Engagement Ring - Size L½ - 0.44ct
950 Platinum Diamond Engagement Ring - Size L½ - 0.44ct
950 Platinum Diamond Engagement Ring - Size L½ - 0.44ct
950 Platinum Diamond Engagement Ring - Size L½ - 0.44ct
950 Platinum Diamond Engagement Ring - Size L½ - 0.44ct
Miltons Diamonds
950 Platinum Diamond Engagement Ring - Size L½ - 0.44ct
£895.00
Platinum Diamond Engagement Ring - Size L½ - 0.27ct
Platinum Diamond Engagement Ring - Size L½ - 0.27ct
Platinum Diamond Engagement Ring - Size L½ - 0.27ct
Platinum Diamond Engagement Ring - Size L½ - 0.27ct
Platinum Diamond Engagement Ring - Size L½ - 0.27ct
Miltons Diamonds
Platinum Diamond Engagement Ring - Size L½ - 0.27ct
£595.00
Platinum Ladies Princess Cut Diamond Engagement Ring - 0.47ct
Platinum Ladies Princess Cut Diamond Engagement Ring - 0.47ct
Platinum Ladies Princess Cut Diamond Engagement Ring - 0.47ct
Platinum Ladies Princess Cut Diamond Engagement Ring - 0.47ct
Platinum Ladies Princess Cut Diamond Engagement Ring - 0.47ct
Platinum Ladies Princess Cut Diamond Engagement Ring - 0.47ct
Platinum Ladies Princess Cut Diamond Engagement Ring - 0.47ct
Miltons Diamonds
Platinum Ladies Princess Cut Diamond Engagement Ring - 0.47ct
£949.00
Platinum Diamond Solitaire Engagement Ring - Size M - 1.31ct
Platinum Diamond Solitaire Engagement Ring - Size M - 1.31ct
Platinum Diamond Solitaire Engagement Ring - Size M - 1.31ct
Platinum Diamond Solitaire Engagement Ring - Size M - 1.31ct
Platinum Diamond Solitaire Engagement Ring - Size M - 1.31ct
Platinum Diamond Solitaire Engagement Ring - Size M - 1.31ct
Miltons Diamonds
Platinum Diamond Solitaire Engagement Ring - Size M - 1.31ct
£5,500.00
Authenticity, Guaranteed.
Platinum Diamond Solitaire Engagement Ring - Size N - 0.65ct
Platinum Diamond Solitaire Engagement Ring - Size N - 0.65ct
Platinum Diamond Solitaire Engagement Ring - Size N - 0.65ct
Platinum Diamond Solitaire Engagement Ring - Size N - 0.65ct
Platinum Diamond Solitaire Engagement Ring - Size N - 0.65ct
Miltons Diamonds
Platinum Diamond Solitaire Engagement Ring - Size N - 0.65ct
£1,995.00
950 Platinum Diamond Engagement Ring - Size J½ - 0.31ct
950 Platinum Diamond Engagement Ring - Size J½ - 0.31ct
950 Platinum Diamond Engagement Ring - Size J½ - 0.31ct
950 Platinum Diamond Engagement Ring - Size J½ - 0.31ct
950 Platinum Diamond Engagement Ring - Size J½ - 0.31ct
Miltons Diamonds
950 Platinum Diamond Engagement Ring - Size J½ - 0.31ct
£895.00
2.64ct Platinum Certified Oval Diamond Engagement Ring - E/VS2
2.64ct Platinum Certified Oval Diamond Engagement Ring - E/VS2
2.64ct Platinum Certified Oval Diamond Engagement Ring - E/VS2
2.64ct Platinum Certified Oval Diamond Engagement Ring - E/VS2
2.64ct Platinum Certified Oval Diamond Engagement Ring - E/VS2
2.64ct Platinum Certified Oval Diamond Engagement Ring - E/VS2
Miltons Diamonds
2.64ct Platinum Certified Oval Diamond Engagement Ring - E/VS2
£1,950.00
950 Platinum Diamond Engagement Ring - Size J½ - 0.31ct
950 Platinum Diamond Engagement Ring - Size J½ - 0.31ct
950 Platinum Diamond Engagement Ring - Size J½ - 0.31ct
950 Platinum Diamond Engagement Ring - Size J½ - 0.31ct
950 Platinum Diamond Engagement Ring - Size J½ - 0.31ct
950 Platinum Diamond Engagement Ring - Size J½ - 0.31ct
Miltons Diamonds
950 Platinum Diamond Engagement Ring - Size J½ - 0.31ct
£495.00
1.50ct Platinum Certified Rectangular Diamond Ring - D/VS1
1.50ct Platinum Certified Rectangular Diamond Ring - D/VS1
1.50ct Platinum Certified Rectangular Diamond Ring - D/VS1
1.50ct Platinum Certified Rectangular Diamond Ring - D/VS1
1.50ct Platinum Certified Rectangular Diamond Ring - D/VS1
1.50ct Platinum Certified Rectangular Diamond Ring - D/VS1
1.50ct Platinum Certified Rectangular Diamond Ring - D/VS1
1.50ct Platinum Certified Rectangular Diamond Ring - D/VS1
Miltons Diamonds
1.50ct Platinum Certified Rectangular Diamond Ring - D/VS1
£2,950.00
950 Platinum Diamond Engagement Ring - Size M½ - 0.52ct
950 Platinum Diamond Engagement Ring - Size M½ - 0.52ct
950 Platinum Diamond Engagement Ring - Size M½ - 0.52ct
950 Platinum Diamond Engagement Ring - Size M½ - 0.52ct
950 Platinum Diamond Engagement Ring - Size M½ - 0.52ct
Miltons Diamonds
950 Platinum Diamond Engagement Ring - Size M½ - 0.52ct
£1,295.00
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Are your diamonds and gemstones authentic?

Yes — every diamond and gemstone at Miltons Diamonds is carefully checked for authenticity. Our pieces are assessed by experienced and qualified gemmologists to ensure they meet our high standards. Where applicable, stones may also be accompanied by independent certification (such as GIA), giving you complete confidence in the quality and provenance of your purchase.

How are your items valued?

All of our jewellery is thoroughly inspected and valued by a qualified gemmologist. We assess key factors such as cut, colour, clarity, carat weight, and overall craftsmanship. This expert evaluation ensures that every piece is accurately described and fairly priced, so you can buy with confidence knowing you’re receiving genuine value.

Are your pre-owned watches authenticated?

Absolutely. Every pre-owned watch we sell undergoes a rigorous authentication process. Our watches are inspected by specialists to verify originality, condition, and performance. We ensure that each timepiece is genuine and accurately represented, so you can purchase luxury watches with complete peace of mind.

What are your delivery times and do you hold your stock?

We aim to dispatch all orders quickly and securely, with most items sent via next working day delivery after purchase. All products listed on our website are physically held in stock by Miltons Diamonds and are available to view in-store as well as online. This means you can shop confidently knowing your chosen item is ready for immediate dispatch or personal viewing.

100+ YEARS HERITAGE

2 YEAR ROLEX WARRANTY

NEXT DAY DELIVERY

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