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Synthetic diamonds

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Synthetic diamonds for sale on largest auction and classifieds sites

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Harlembling inch 7mm - 26,

Harlembling inch 7mm - 26,

£540.34
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Synthetic diamond - ct--,

Synthetic diamond - ct--,

£73.50
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Egl certified ct cvd - certified,

Egl certified ct cvd - certified,

£183.50
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Cvd lab grown diamond - 8, ct

Cvd lab grown diamond - 8, ct

£53.15
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Antique 18kt gold platinum - antique,

Antique 18kt gold platinum - antique,

£3369.61
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14k heavy hip - heavy, cuban

14k heavy hip - heavy, cuban

£2236.40
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Synthetic diamond - ct--,

Synthetic diamond - ct--,

£85.98
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Carat synthetic diamonds - 1,

Carat synthetic diamonds - 1,

£6.45
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Aaa dark green - dark,

Aaa dark green - dark,

£38.30
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Unfoiled zircon stones - unfoiled,

Unfoiled zircon stones - unfoiled,

£4.99
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Gold ring 18ct yellow - gold,

Gold ring 18ct yellow - gold,

£750.00
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Moissanite vvs1 round cut - vvs1,

Moissanite vvs1 round cut - vvs1,

£28.97
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Synthetic diamond crystals - synthetic,

Synthetic diamond crystals - synthetic,

£30.00
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Lab grown certified - grown, 15

Lab grown certified - grown, 15

£110.32
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Lab grown certified - lab,

Lab grown certified - lab,

£38.60
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Igl raw lab - grown, 6

Igl raw lab - grown, 6

£63.04
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Moissanite round cut - moissanite, loose

Moissanite round cut - moissanite, loose

£35.40
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Gram synthetic diamonds - 1,

Gram synthetic diamonds - 1,

£18.32
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2ct round cut moissanite - 2ct,

2ct round cut moissanite - 2ct,

£100.87
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Art deco 18kt - &, platinum

Art deco 18kt - &, platinum

£1988.74
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Moissanite vvs1 round cut - vvs1,

Moissanite vvs1 round cut - vvs1,

£25.43
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Silver diamonds ring women - diamonds, men

Silver diamonds ring women - diamonds, men

£5.40
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White color round cut vvs1 - cut,

White color round cut vvs1 - cut,

£83.68
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18ct gold synthetic yellow - 18ct,

18ct gold synthetic yellow - 18ct,

£623.80
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Opal ring set sterling - ,

Opal ring set sterling - ,

£24.61
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Glencarra cladagh pendant - cladagh,

Glencarra cladagh pendant - cladagh,

£21.50
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Fabulicious lip 108 5 - 108, dm/5

Fabulicious lip 108 5 - 108, dm/5

£63.10
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White color vvs1 - white,

White color vvs1 - white,

£41.84
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Igl certified raw lab - igl, 8

Igl certified raw lab - igl, 8

£53.10
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Lab grown cvd - lab, f

Lab grown cvd - lab, f

£141.42
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Aaa dark green - dark,

Aaa dark green - dark,

£40.22
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Lab grown certified - lab,

Lab grown certified - lab,

£110.32
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Single lab created - single,

Single lab created - single,

£5.99
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Gold simulated diamond cluster - simulated,

Gold simulated diamond cluster - simulated,

£10.80
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Moissanite round cut loose - cut,

Moissanite round cut loose - cut,

£28.97
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Reduced heirloom - **reduced**, 'heirloom'

Reduced heirloom - **reduced**, 'heirloom'

£11.87
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Glencara irish jewelery - irish,

Glencara irish jewelery - irish,

£18.00
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Aaa white color round - d,

Aaa white color round - d,

£42.01
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Color diamond - f-color,

Color diamond - f-color,

£367.36
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Loose lab grown - loose, cvd

Loose lab grown - loose, cvd

£132.38
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Gems and gemology - gems,

Gems and gemology - gems,

£52.53
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Lab grown certified - 35.50,

Lab grown certified - 35.50,

£97.31
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Diamond carat moissanite - diamond, 1

Diamond carat moissanite - diamond, 1

£26.91
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Gems gemology in - gems,

Gems gemology in - gems,

£52.70
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Antique 1907 9ct rose - 1907,

Antique 1907 9ct rose - 1907,

£189.00
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Synthetic diamonds gems - diamonds, &

Synthetic diamonds gems - diamonds, &

£56.29
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Diamond carat moissanite - diamond, 5

Diamond carat moissanite - diamond, 5

£49.89
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Gold simulated diamond cluster - simulated,

Gold simulated diamond cluster - simulated,

£10.80
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2026 are - -,

2026 are - -,

£4.40
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Pretty 18ct yellow gold - pretty,

Pretty 18ct yellow gold - pretty,

£995.00
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Vintage synthetic diamond - synthetic,

Vintage synthetic diamond - synthetic,

£14.99
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White color vvs1 moissanite - white,

White color vvs1 moissanite - white,

£41.84
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Geneva watch large multi dial - multi,

Geneva watch large multi dial - multi,

£19.59
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Synthetic emerald and - emerald, diamond

Synthetic emerald and - emerald, diamond

£300.00
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Tjc snake ring - ring, size

Tjc snake ring - ring, size

£20.00
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White color round cut vvs1 - color,

White color round cut vvs1 - color,

£109.43
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Starburst gold earrings - gold,

Starburst gold earrings - gold,

£67.33
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Gold simulated diamond cluster - simulated,

Gold simulated diamond cluster - simulated,

£10.80
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Aaa dark green - aaa,

Aaa dark green - aaa,

£37.01
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Lab grown ct certified - lab, 4.10

Lab grown ct certified - lab, 4.10

£21.18
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Silver earrings synthetic - earrings,

Silver earrings synthetic - earrings,

£12.94
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18ct gold synthetic emerald - 18ct,

18ct gold synthetic emerald - 18ct,

£416.38
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18k yellow gold emerald - yellow,

18k yellow gold emerald - yellow,

£1485.70
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9ct gold synthetic ruby - synthetic, &

9ct gold synthetic ruby - synthetic, &

£168.00
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Luxury butterfly brooch 14k - butterfly,

Luxury butterfly brooch 14k - butterfly,

£16.15
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Emerald and diamond pendant - emerald,

Emerald and diamond pendant - emerald,

£250.00
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Ladies round cut synthetic - ladies,

Ladies round cut synthetic - ladies,

£12.94
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Platinum cluster ring set with - cluster,

Platinum cluster ring set with - cluster,

£627.98
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Lab grown certified - 7.80,

Lab grown certified - 7.80,

£39.71
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Loose lab grown cvd - grown, diamond

Loose lab grown cvd - grown, diamond

£147.09
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Certified cvd diamond lab - 3, ct

Certified cvd diamond lab - 3, ct

£18.54
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Antique platinum old european - antique,

Antique platinum old european - antique,

£1166.23
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900 platinum natural - pt,

900 platinum natural - pt,

£394.30
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London diamond centre visit - diamond,

London diamond centre visit - diamond,

£10.00
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2026 are - 25-3-2026,

2026 are - 25-3-2026,

£3.30
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5ct high carbon diamond ring - 5ct,

5ct high carbon diamond ring - 5ct,

£5.03
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Lab rough synthetic - synthetic, white

Lab rough synthetic - synthetic, white

£21.87
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9x9 white color loose - mm,

9x9 white color loose - mm,

£109.43
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Vintage 9ct gold - , synthetic

Vintage 9ct gold - , synthetic

£166.06
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Men 9ct yellow gold - men's,

Men 9ct yellow gold - men's,

£379.72
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9ct gold ring - 9ct, solitaire

9ct gold ring - 9ct, solitaire

£288.00
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Gold simulated diamond cluster - simulated,

Gold simulated diamond cluster - simulated,

£10.80
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9ct yellow gold synthetic pink - gold,

9ct yellow gold synthetic pink - gold,

£1021.32
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White color round cut - color, vvs1

White color round cut - color, vvs1

£83.68
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Single lab created - lab, cz

Single lab created - lab, cz

£5.76
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9ct gold ring with synthetic

9ct gold ring with synthetic

£83.90
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18ct yellow gold ring set - gold,

18ct yellow gold ring set - gold,

£1361.23
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Beaded diamond synthetic - beaded, "diamond"

Beaded diamond synthetic - beaded, "diamond"

£4.38
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Natural black moissanite - ct,

Natural black moissanite - ct,

£17.82
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Vintage 9ct gold synthetic - vintage,

Vintage 9ct gold synthetic - vintage,

£234.70
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Gold 25ct natural diamond - 0.25ct,

Gold 25ct natural diamond - 0.25ct,

£299.00
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Vintage 925 sterling - sterling, silver

Vintage 925 sterling - sterling, silver

£31.38
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Pink and clear synthetic - and,

Pink and clear synthetic - and,

£13.47
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2026 are - -,

2026 are - -,

£3.85
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Igl carat raw lab - igl,

Igl carat raw lab - igl,

£35.30
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Igl raw lab grown - igl,

Igl raw lab grown - igl,

£53.40
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📊96 listings · from £3.3 · avg £237.34
⚠️ These listings were last updated more than 12 days ago. Search for fresh listings

Browse 96 synthetic diamonds listings currently in our index. Prices range from £3.3 to £3369.61, with an average of £237.34. 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 synthetic diamonds →

Try this: synthetic opal | synthetic saddles | synthetic western saddle | syrena | system scaffold | systemdek ii | systemdek iix | t post | t post driver | t rex costume

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< £25 £25 – £50 £50 – £100 £100 – £200 £200 – £500 > £500

Everything you need to know about synthetic diamonds

Whether you are looking for a brand-new or second-hand synthetic diamonds, eBay offers one of the largest selections available online. With 96 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 £3.3, while premium listings can reach £3369.61 — giving you a wide budget spread to work with. The average price of £237.34 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.

🔍 synthetic diamonds Search live on eBay