1 carat diamond
1 carat diamond for sale on Ireland's largest auction and classifieds sites
Carat lab grown diamond stud - 1, - £339.93
Brand new never • Worn this carat • Total weight lab - Free postage - New and Used
Brand new never • Worn this carat • Total weight lab - Free postage - New and Used
Carat labcreated diamond - carat, - £65.00
Cut too shallow • Set two 0.75 • Lab created diamonds - Free postage - New and Used
Cut too shallow • Set two 0.75 • Lab created diamonds - Free postage - New and Used
Carat lab created diamond - carat, - £65.00
This refers how • Free from imperfections • Diamond understand most - Free postage - New and Used
This refers how • Free from imperfections • Diamond understand most - Free postage - New and Used
Carat lab created diamond - carat, - £65.00
Cut too shallow • Light will pass • Through diamond not - Free postage - New and Used
Cut too shallow • Light will pass • Through diamond not - Free postage - New and Used
Looking for more 1 carat diamond?
Search eBay live — fresh results filtered for the best value, updated every hour.
Cttw certified igi - 1/2, lab - £904.52
Four prong 14k • White gold stud • Earrings feature two - Free postage - New and Used
Four prong 14k • White gold stud • Earrings feature two - Free postage - New and Used
📊
47 listings · from £10.8 · avg £222.9
⚠️ These listings were last updated more than 9 days ago.
Search for fresh listings
Browse 47 1 carat diamond listings currently in our index. Prices range from £10.8 to £1448.84, with an average of £222.9. Whether you are hunting for a bargain or looking for a top-spec model, the selection below covers all price points — new, used and refurbished. More about 1 carat diamond →
18ct white gold - baguette, 1.5 - £822.70
Beautiful 18ct white • Gold baguette diamond • Bridge arch ring - Free postage - New and Used
Beautiful 18ct white • Gold baguette diamond • Bridge arch ring - Free postage - New and Used
Natural carat princess - natural, - £1400.00
Natural princess diamond • Half eternity ring • Weight 1.00 carat - Free postage - New and Used
Natural princess diamond • Half eternity ring • Weight 1.00 carat - Free postage - New and Used
Carat lab created - 1.0, - £65.00
Cut too shallow • Loosing its sparkle • All our set - Free postage - New and Used
Cut too shallow • Loosing its sparkle • All our set - Free postage - New and Used
Carat mm antique - antique, hexagon - £124.72
Photos related item • You have ordered • Are meant only - Free postage - New and Used
Photos related item • You have ordered • Are meant only - Free postage - New and Used
Grinding wheel diamond dresser - diamond, - £15.95
Sold rdgtools grinding • Wheel diamond dresser • Used dress - Free postage - New and Used
Sold rdgtools grinding • Wheel diamond dresser • Used dress - Free postage - New and Used
Carat lab created diamond - 1.9, - £65.00
Cut too shallow • Light will pass • Through diamond not - Free postage - New and Used
Cut too shallow • Light will pass • Through diamond not - Free postage - New and Used
51ct lab grown - 1.51ct, - £699.00
Lab grown round • Diamond solitaire pendant • Platinum hatton garden - Free postage - New and Used
Lab grown round • Diamond solitaire pendant • Platinum hatton garden - Free postage - New and Used
Natural ct certified - natural, 1.00 - £52.40
Due lighting effects • Shooting angles there • Color difference product - Free postage - New and Used
Due lighting effects • Shooting angles there • Color difference product - Free postage - New and Used
Carat lab created diamond - , - £65.00
Cut too shallow • Loosing its sparkle • All our set - Free postage - New and Used
Cut too shallow • Loosing its sparkle • All our set - Free postage - New and Used
Carat lab created diamond - 1.72, - £65.00
Cut too shallow • Light will pass • Through diamond not - Free postage - New and Used
Cut too shallow • Light will pass • Through diamond not - Free postage - New and Used
Carat moissanite claws - 1, 6 - £80.00
Total carat weight • Carats stone 6.5 • Finish high polished - Free postage - New and Used
Total carat weight • Carats stone 6.5 • Finish high polished - Free postage - New and Used
Gold ring with diamond - with, - £307.50
Gold ring diamond • Specifically made from • 14k describes classic - Free postage - New and Used
Gold ring diamond • Specifically made from • 14k describes classic - Free postage - New and Used
Gold ring diamonds - ring, diamonds. - £465.70
Total eleven diamonds • Which are very • Nice quality diamond - Free postage - New and Used
Total eleven diamonds • Which are very • Nice quality diamond - Free postage - New and Used
Carat lab created diamond - 1.0, - £75.00
Cut too shallow • Light will pass • Through diamond not - Free postage - New and Used
Cut too shallow • Light will pass • Through diamond not - Free postage - New and Used
Natural diamond lot carat - natural, - £83.15
Photos related item • You have ordered • Are meant only - Free postage - New and Used
Photos related item • You have ordered • Are meant only - Free postage - New and Used
Carat brown gray - brown, si3 - £207.50
This diamond • Natural guaranteed earth • Sold loose non - Free postage - New and Used
This diamond • Natural guaranteed earth • Sold loose non - Free postage - New and Used
Drilled herkimer diamond - herkimer, - £11.99
They help tuning • Healer patient - Free postage - New and Used
They help tuning • Healer patient - Free postage - New and Used
Carat 10k gold natural - gold, - £106.41
These earrings have • Screw back closures • Ensuring secure fit - Free postage - New and Used
These earrings have • Screw back closures • Ensuring secure fit - Free postage - New and Used
Diamond eternity rainbow - diamond, - £65.00
Set 1.8 carat • Brilliant round cut • Lab created diamonds - Free postage - New and Used
Set 1.8 carat • Brilliant round cut • Lab created diamonds - Free postage - New and Used
9ct yellow gold necklace - yellow, - £315.35
These premium quality • Classic diamond cut • Curb chains 9ct - Free postage - New and Used
These premium quality • Classic diamond cut • Curb chains 9ct - Free postage - New and Used
Carat natural loose - natural, - £133.03
Photos related item • You have ordered • Are meant only - Free postage - New and Used
Photos related item • You have ordered • Are meant only - Free postage - New and Used
9ct white gold necklace - 9ct, - £257.70
These premium quality • Classic diamond cut • Curb chains 9ct - Free postage - New and Used
These premium quality • Classic diamond cut • Curb chains 9ct - Free postage - New and Used
Natural certified pink - natural, ct - £89.24
Due lighting effects • Shooting angles there • Color difference product - Free postage - New and Used
Due lighting effects • Shooting angles there • Color difference product - Free postage - New and Used
Round cut vvs1 - 9, - £62.03
These exquisite premium • Quality lab created • White sapphirestud ear - Free postage - New and Used
These exquisite premium • Quality lab created • White sapphirestud ear - Free postage - New and Used
3.38carats pear cut natural - £305.70
Photos related item • You have ordered • Are meant only - Free postage - New and Used
Photos related item • You have ordered • Are meant only - Free postage - New and Used
Ruby ring size - , 57 - £242.55
Die steine wirken • Wie ein gro • Diamant durch das - Free postage - New and Used
Die steine wirken • Wie ein gro • Diamant durch das - Free postage - New and Used
35carat fancy black color - black, - £28.86
Photos related item • You have ordered • Are meant only - Free postage - New and Used
Photos related item • You have ordered • Are meant only - Free postage - New and Used
Carat green color diamond - color, - £48.91
Photos related item • You have ordered • Are meant only - Free postage - New and Used
Photos related item • You have ordered • Are meant only - Free postage - New and Used
Carat lab grown - carat, simulant - £10.80
Are wholesale supplier • Stones precious semiprecious • Lots pieced round - Free postage - New and Used
Are wholesale supplier • Stones precious semiprecious • Lots pieced round - Free postage - New and Used
Carat yellow brown vvs1 - 0.11, - £34.16
Please advised that • International customers might • Encounter delays caused - Free postage - New and Used
Please advised that • International customers might • Encounter delays caused - Free postage - New and Used
Carat si1 round - carat, d - £41.02
Please advised that • International customers might • Encounter delays caused - Free postage - New and Used
Please advised that • International customers might • Encounter delays caused - Free postage - New and Used
Best seller 4 ct - best, round - £139.00
Diamond shape round • Brilliant setting type • Stud earring push - Free postage - New and Used
Diamond shape round • Brilliant setting type • Stud earring push - Free postage - New and Used
8500 carat round natural - $8500, - £206.92
This piece jewelry • Made order item • That takes better - Free postage - New and Used
This piece jewelry • Made order item • That takes better - Free postage - New and Used
Igi certified diamond - igi, - £337.83
Natural diamond igi • Certified 0.21 carat • Not sintetic guarda - Free postage - New and Used
Natural diamond igi • Certified 0.21 carat • Not sintetic guarda - Free postage - New and Used
14k gold anklets for - 14k, non - £94.17
Material 14k gold • Clasp lobster claw • Box chain gem - Free postage - New and Used
Material 14k gold • Clasp lobster claw • Box chain gem - Free postage - New and Used
Carat fancy yellow si2 - carat, - £32.30
Please advised that • International customers might • Encounter delays caused - Free postage - New and Used
Please advised that • International customers might • Encounter delays caused - Free postage - New and Used
Carat fancy yellow - 0.07, - £21.10
Please advised that • International customers might • Encounter delays caused - Free postage - New and Used
Please advised that • International customers might • Encounter delays caused - Free postage - New and Used
Genuine cts ruby - 0.69, - £266.04
Genuine ruby 0.69 • Grades free appraisal • Diamonds 0.015 carats - Free postage - New and Used
Genuine ruby 0.69 • Grades free appraisal • Diamonds 0.015 carats - Free postage - New and Used
Carat igi gia lab - gia, grown - £1448.84
Leave positive feedback • Import duties taxes • Charges are not - Free postage - New and Used
Leave positive feedback • Import duties taxes • Charges are not - Free postage - New and Used
Carat fancy yellow si1 - yellow, - £16.12
Please advised that • International customers might • Encounter delays caused - Free postage - New and Used
Please advised that • International customers might • Encounter delays caused - Free postage - New and Used
Princess cut vvs1 - ct, - £53.16
These lab created • White sapphire stud • Earrings are made - Free postage - New and Used
These lab created • White sapphire stud • Earrings are made - Free postage - New and Used
82carat grayish yellow round - yellow, - £74.82
Photos related item • You have ordered • Are meant only - Free postage - New and Used
Photos related item • You have ordered • Are meant only - Free postage - New and Used
Try this: green amber ring | pandora retired rings | pandora charm bracelet charms | pandora charms penguin | american pandora charms | pandora chicken charm | pandora moonstone charm | 18 carat gold chain | lobster floats | cartier 750
Shop by budget
Everything you need to know about 1 carat diamond
Whether you are looking for a brand-new or second-hand 1 carat diamond, eBay offers one of the largest selections available online. With 47 active listings at the time of this page's last update, you have plenty of choice across different conditions, sellers and price points. The cheapest option currently starts at £10.8, while premium listings can reach £1448.84 — giving you a wide budget spread to work with. The average price of £222.9 can serve as a useful benchmark: listings below this tend to be used or auction-style, while those above often include extra accessories, warranties, or are sold by professional sellers with high feedback scores. Always check the seller's feedback rating and return policy before committing to a purchase. If you need the item quickly, filter by "Buy It Now" to avoid the uncertainty of auctions. For used items, look closely at the condition description and photos — terms like "good", "very good" and "like new" can mean very different things depending on the seller.