Book an Appointment in London or Manchester (or Virtual)
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 Eternity Design Sapphire Gemstone Rings

Learn more

A wonderful declaration of love is the combination of a stunning gemstone with diamonds. Our collection of platinum sapphire eternity design gemstone rings allows you to showcase your devotion in a stunning piece of jewellery.

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 beautiful fifteen stone sapphire & diamond eternity ring in platinum
PDS166PL
A beautiful fifteen stone sapphire & diamond eternity ring in platinum
From: £705 to £1,284
An elegant five stone sapphire & diamond eternity ring in platinum
PDS367PL
An elegant five stone sapphire & diamond eternity ring in platinum
From: £691 to £1,376
A timeles nine stone sapphire & diamond eternity ring in platinum
PDS053PL
A timeles nine stone sapphire & diamond eternity ring in platinum
From: £699 to £1,561
A beautiful fifteen stone sapphire & diamond eternity ring in platinum
PDWS061PL
A beautiful fifteen stone sapphire & diamond eternity ring in platinum
From: £781 to £1,090
A beautiful seven stone sapphire & diamond eternity ring in platinum
PDS336PL
A beautiful seven stone sapphire & diamond eternity ring in platinum
From: £870 to £1,726
An elegant seven stone sapphire & diamond eternity ring in platinum
PDS036PL
An elegant seven stone sapphire & diamond eternity ring in platinum
From: £773 to £1,646
A seventeen stone sapphire & diamond eternity ring in platinum
PDWS084PL
A seventeen stone sapphire & diamond eternity ring in platinum
From: £928 to £954
A stunning princess cut sapphire & diamond seven stone ring in platinum
PDS033PL
A stunning princess cut sapphire & diamond seven stone ring in platinum
From: £950 to £1,822
A beautiful eleven stone sapphire & diamond eternity ring in platinum
PDS302PL
A beautiful eleven stone sapphire & diamond eternity ring in platinum
From: £661 to £1,384
A classic five stone sapphire & diamond eternity ring in platinum
PDS350PL
A classic five stone sapphire & diamond eternity ring in platinum
From: £966 to £2,749
A classic sapphire & diamond eleven stone eternity ring in platinum
PDS344PL
A classic sapphire & diamond eleven stone eternity ring in platinum
From: £751 to £1,202
A beautiful sapphire & diamond eternity ring in platinum
PDWS080PL
A beautiful sapphire & diamond eternity ring in platinum
From: £868 to £1,169
An elegant sapphire & diamond seven stone eternity ring in platinum
PDS244PL
An elegant sapphire & diamond seven stone eternity ring in platinum
From: £736 to £2,454
A stunning five stone princess cut sapphire & diamond eternity ring in platinum
PDS310PL
A stunning five stone princess cut sapphire & diamond eternity ring in platinum
From: £977 to £1,931
A stylish five stone sapphire & diamond eternity ring in platinum
PDS048PL
A stylish five stone sapphire & diamond eternity ring in platinum
From: £838 to £1,850
A stylish five stone sapphire & diamond ring in platinum
PDS248PL
A stylish five stone sapphire & diamond ring in platinum
From: £712 to £1,677
A stunning five stone sapphire & diamond eternity ring in platinum
PDS110PL
A stunning five stone sapphire & diamond eternity ring in platinum
From: £1,247 to £2,408
A stunning sapphire & diamond eternity ring in platinum
PDS548PL
A stunning sapphire & diamond eternity ring in platinum
From: £876 to £1,557

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)