15% off all ready to ship items using code SPRING15 - Shop now
Menu
Help
Account
Your Basket
Purely Diamonds logo
Browse our engagement rings
Browse our wedding rings
Browse our diamond jewellery
Browse our eternity rings
Browse our gemstone rings
Browse our bespoke diamond jewellery service
View our Ready to Ship items

Purely Diamonds logo
Learn more about our bespoke design service Browse our engagement rings Browse our wedding rings
Solitaire style engagement ring
Solitairerings
Solitaire with shoulders style engagement ring
Solitairewith shoulders
Cluster style engagement ring
Clusterrings
Three stone style engagement ring
Three stonerings
Cluster style engagement ring
Halorings
Mens style engagement ring
Mensrings
Three stone style engagement ring
Diamond& gemstone
For Evermore engagement ring
ForEvermore

Purely Diamonds logo
Browse our engagement rings Browse our wedding rings Browse our diamond jewellery
Ladies diamond-set style wedding ring
Ladiesdiamond-set
Ladies plain band style wedding ring
Ladiesplain bands
Mens diamond-set style wedding ring
Mensdiamond-set
Mens plain bands style wedding ring
Mensplain bands
Wishbone bands style wedding ring
Wishbone bands

Purely Diamonds logo
Browse our diamond jewellery Browse our eternity rings Browse our gemstone rings
Full eternity ring
Full Eternityrings
Three Quarter eternity ring
Three Quartereternity rings
Half eternity ring
Half Eternityrings
Three stone style diamond ring
Diamond & gemstone rings
Wishbone style eternity ring
Wishbone eternity rings

Purely Diamonds logo
Browse our eternity rings Browse our gemstone rings Learn more about our bespoke design service
Emerald gemstone ring
Emerald& diamond
Ruby gemstone ring
Ruby& diamond
Sapphire gemstone ring
Sapphire& diamond
Tanzanite gemstone ring
Tanzanite& diamond
Aqua gemstone ring
Aqua& diamond
Pink Sapphire gemstone ring
Pink Sapphire& diamond
Critrine gemstone ring
Citrine& diamond
Peridot gemstone ring
Peridot & diamond

Purely Diamonds logo
Browse our wedding rings Browse our diamond earrings and pendants Browse our eternity rings
Dress style diamond ring
Dress rings
Diamond stud earring
Diamond stud earrings
Diamond hoop earring
Diamond hoopearrings
Diamond stud earring
Pearl& diamond earrings
Diamond pendants
Diamondpendants
Diamond pendants
Pearl& diamond pendants
Diamond bracelets
Diamondbracelets

Purely Diamonds logo
0207 837 2964
Email Us
Online Chat
Online Form
Visit us in London or Manchester

We are open Monday to Friday 9am - 6pm
(Phone lines close at 5.30pm on Friday).
Showroom visits by appointment only.

Diamond
education
Metal
education
Ring size
information
Delivery
information
Returns
information
Jewellery
Repairs
Bespoke
design
Try before
you buy
Ring resizing
service

Purely Diamonds logo
Visit our London showroom
Try before you buy service
Ring resizing
Jewellery repair services
Diamond education
Metal education
Ring size information
Order information
Delivery information
Returns information

Purely Diamonds logo

Call Visit whatsapp
Search
  • Login / Sign-up
  • 0
  • 0
Trustpilot

Platinum Princess Cut Three Stone Engagement Rings

Learn more

Shopping for an engagement ring can be a daunting process, but with our award winning rings, we're here to make it an enjoyable one. Each of our platinum princess cut three stone engagement rings will be made just for you.

Filter By Style

Filter By metal

Filter By Main Shape

Other options

20 Trees Planted With Every Order
We have partnered with Trees For The Future to do our part in looking after our planet and planning for the future. For every order received, we'll ensure there are 20 trees planted with the mission to recreate forests and decrease CO2 in our atmosphere.
Learn More
A stunning three stone Princess Cut diamond ring with shoulders stone in platinum
    PD111PL
    A stunning three stone Princess Cut diamond ring with shoulders stone in platinum
    From: £1,382 to £3,810
    A classic three stone Princess Cut diamond ring in platinum
      PD462PL
      A classic three stone Princess Cut diamond ring in platinum
      From: £1,154 to £3,623
      A breathtaking three stone diamond ring with shoulder stones in platinum
        PD631PL
        A breathtaking three stone diamond ring with shoulder stones in platinum
        From: £1,610 to £2,771
        A unique tension set three stone twist diamond ring in platinum
          PD214PL
          A unique tension set three stone twist diamond ring in platinum
          From: £786 to £822
          A stunning 3 stone diamond ring with shoulder stones in platinum
            PD849PL
            A stunning 3 stone diamond ring with shoulder stones in platinum
            From: £2,165 to £2,956

            Set Ascending Direction

            per page

            • Follow Us


            • Payment Methods

            • We accept Visa, Mastercard and American Express
            • SafeBuy Verification Seal We accept PayPal payments

            • Proud Member Of

            • We are a member of the National Association of Jewellers
            • We are a Goldsmiths Company member
            • Assay Assured

            • Proud Supplier Of

            • We supply certified GIA diamonds We only deal in conflict-free diamonds
            • We supply certified IGI diamonds We are a partner of Trees For The Future

            Purely Diamonds is a trading name of Stephen Tyler Limited. Registered Company Number (Incorporated in England): 01840310. VAT Number: 466237727 (GB)