Book an Appointment in London or Manchester (or Virtual)
Flash Sale 5% off everything -
Use code SUMMER22
0 days 0 hours 0 mins 0 secs
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-Made 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 hoops & dropsearrings
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 or Book Virtual Appointment

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 Three Stone Design Gemstone Rings

Learn more

No matter your gemstone preference, you'll discover something truly wonderful in our platinum three stone design gemstone rings collection. The use of platinum with any gemstone gives you a show stopping result every time.

Filter By Gemstone colour

Filter By metal

Filter By Style

Other options

All our diamonds are naturally mined and ethically sourced
At Purely Diamonds, we believe in the magic of natural diamonds. Formed over billions of years and found naturally in the ground, these precious gems add to the story of your own diamond journey. We also make sure all our diamonds are conflict-free as the ethical mining and sourcing is very important to us.
A timeless 3 stone sapphire & diamond ring in platinum
PDS567PL
A timeless 3 stone sapphire & diamond ring in platinum
From: £805 to £3,699
An elegant three stone emerald & diamond ring in platinum
PDM389PL
An elegant three stone emerald & diamond ring in platinum
From: £1,465 to £1,869
A stylish three stone emerald & diamond ring in platinum
PDM499PL
A stylish three stone emerald & diamond ring in platinum
From: £1,549 to £2,420
A stunning emerald & diamond ring in platinum
PDM279PL
A stunning emerald & diamond ring in platinum
Only: £3,015
An elegant round brilliant cut diamond ring with sapphire shoulders in platinum
PDSS528PL
An elegant round brilliant cut diamond ring with sapphire shoulders in platinum
From: £1,625 to £3,160
A delightful sapphire & diamond three stone ring in platinum
PDS523PL
A delightful sapphire & diamond three stone ring in platinum
From: £1,406 to £2,586
A timeless aqua & diamond 3 stone ring in platinum
PDAQ567PL
A timeless aqua & diamond 3 stone ring in platinum
From: £1,533 to £2,943
A classic three stone sapphire & diamond ring in platinum
PDS462PL
A classic three stone sapphire & diamond ring in platinum
From: £1,018 to £2,340
A luxurious sapphire & diamond ring with shoulder stones in platinum
PDSS404PL
A luxurious sapphire & diamond ring with shoulder stones in platinum
From: £1,314 to £3,897
A timeless three stone ruby & diamond ring in platinum
PDR491PL
A timeless three stone ruby & diamond ring in platinum
From: £766 to £1,138
A timeless three stone sapphire & diamond ring in platinum
PDS491PL
A timeless three stone sapphire & diamond ring in platinum
From: £793 to £1,230
A beautiful round brilliant cut three stone ruby and diamond ring in platinum
PDRR491PL
A beautiful round brilliant cut three stone ruby and diamond ring in platinum
From: £1,744 to £2,650
A delightful emerald and diamond ring in platinum
PDM714PL
A delightful emerald and diamond ring in platinum
Only: £2,178
A stunning sapphire & diamond 3 stone ring in platinum
PDS279PL
A stunning sapphire & diamond 3 stone ring in platinum
Only: £2,280
A delightful emerald & diamond three stone ring in platinum
PDM523PL
A delightful emerald & diamond three stone ring in platinum
From: £1,530 to £2,244
A stylish three stone sapphire & diamond ring in platinum
PDS499PL
A stylish three stone sapphire & diamond ring in platinum
From: £1,438 to £2,309
A classic emerald & diamond three stone ring in platinum
PDM528PL
A classic emerald & diamond three stone ring in platinum
From: £1,323 to £1,996
A stylish three stone emerald & diamond ring in platinum
PDM388PL
A stylish three stone emerald & diamond ring in platinum
From: £1,655 to £1,701

Set Ascending Direction

per page

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

  • 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)