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Gia diamond

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Gia diamond for sale on largest auction and classifieds sites

Home / Loose Gemstones / Gia diamond refurbished & used for sale | For Sale UK
1ct pear brilliant diamond - 1ct,

1ct pear brilliant diamond - 1ct,

£6086.70
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1ct natural certified - 1ct,

1ct natural certified - 1ct,

£726.00
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9ct natural certified - 0.9ct,

9ct natural certified - 0.9ct,

£462.00
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Gia diamond dossier - gia,

Gia diamond dossier - gia,

£159.96
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50ct round brilliant - 0.50ct,

50ct round brilliant - 0.50ct,

£1500.00
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James allen engagement diamond - james,

James allen engagement diamond - james,

£2628.61
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Gia certified natural - certified, diamond

Gia certified natural - certified, diamond

£126.41
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Asscher cut cert gia - cut, ct

Asscher cut cert gia - cut, ct

£4449.98
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Asscher carat cert - 1.01, cert.

Asscher carat cert - 1.01, cert.

£3238.14
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14k yellow gold - 14k, diamond

14k yellow gold - 14k, diamond

£504.69
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Natural mined diamond ct - mined, 1.26

Natural mined diamond ct - mined, 1.26

£4043.44
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Cushion cut cert - 0.91, gia

Cushion cut cert - 0.91, gia

£3625.91
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Certificate gia round - certificate,

Certificate gia round - certificate,

£4446.26
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Gia 49ct round brilliant - gia, 0.49ct

Gia 49ct round brilliant - gia, 0.49ct

£286.46
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Gia cert natural very - ct,

Gia cert natural very - ct,

£450.11
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Diamond ring - diamond,

Diamond ring - diamond,

£157.72
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Carat cert gia cushion - cert.,

Carat cert gia cushion - cert.,

£3305.23
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Gia cttw vvs2 cushion - gia,

Gia cttw vvs2 cushion - gia,

£1577.16
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Carat cert gia cushion - 1.50,

Carat cert gia cushion - 1.50,

£3435.07
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3ct natural certified - natural,

3ct natural certified - natural,

£5498.00
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14k gia certified natural - gia,

14k gia certified natural - gia,

£1126.55
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Asscher carat cert gia - asscher,

Asscher carat cert gia - asscher,

£3876.32
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Carat cert gia - carat,

Carat cert gia - carat,

£3245.36
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Antique 14k white gold ct - 5.5,

Antique 14k white gold ct - 5.5,

£1149.08
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Natural 74ct gia - 0.74ct,

Natural 74ct gia - 0.74ct,

£1254.22
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Round carat cert gia - carat, cert.

Round carat cert gia - carat, cert.

£3931.08
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Natural mined diamond carat - diamond,

Natural mined diamond carat - diamond,

£3376.88
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Cushion cut cert gia - cushion,

Cushion cut cert gia - cushion,

£6283.77
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80tcw cushion lab grown - cushion,

80tcw cushion lab grown - cushion,

£1169.17
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Gia certified cts round - certified,

Gia certified cts round - certified,

£1466.80
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Cushion diamond engagement - cushion,

Cushion diamond engagement - cushion,

£2600.92
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White gold ring igi - ring, gia

White gold ring igi - ring, gia

£828.66
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Gia certified vs2 round - certified,

Gia certified vs2 round - certified,

£4498.69
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Untreated natural - untreated,

Untreated natural - untreated,

£276.07
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Natural mined diamond - mined,

Natural mined diamond - mined,

£5251.97
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Round certificate gia - round, ct

Round certificate gia - round, ct

£3801.44
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Gia certified ct natural - gia,

Gia certified ct natural - gia,

£236.10
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Natural mined diamond - diamond, ct

Natural mined diamond - diamond, ct

£9844.51
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30tcw round cut triple lab - 2.30tcw,

30tcw round cut triple lab - 2.30tcw,

£1120.15
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Diamond ring igi gia - diamond,

Diamond ring igi gia - diamond,

£1529.04
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Natural mined diamond 30 - natural,

Natural mined diamond 30 - natural,

£5324.36
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Emerald cut cert gia - cut, ct

Emerald cut cert gia - cut, ct

£4148.85
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14k white gold natural - white,

14k white gold natural - white,

£1801.58
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Sylvie designer 18ctw - designer, 1.18ctw

Sylvie designer 18ctw - designer, 1.18ctw

£1982.73
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18ct white gold round - gold,

18ct white gold round - gold,

£1884.22
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Round certificate gia - certificate,

Round certificate gia - certificate,

£5923.37
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Natural 80ct gia - 1.80ct,

Natural 80ct gia - 1.80ct,

£2557.27
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Natural 61ct gia fancy - gia,

Natural 61ct gia fancy - gia,

£4570.03
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Cushion cut cert gia - cushion,

Cushion cut cert gia - cushion,

£2974.15
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Carat cert gia - gia, round

Carat cert gia - gia, round

£9636.66
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Natural 71ct gia vvs2 bent - n,

Natural 71ct gia vvs2 bent - n,

£1513.33
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Platinum round diamond - round,

Platinum round diamond - round,

£4972.25
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Natural mined diamond ct - mined, 1.04

Natural mined diamond ct - mined, 1.04

£2647.01
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Cushion cut cert - cert., gia

Cushion cut cert - cert., gia

£11780.53
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Igi gia pear cut - gia,

Igi gia pear cut - gia,

£1856.07
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Gia diamond manuel - gia,

Gia diamond manuel - gia,

£29.29
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Cushion cut cert gia - 1.50,

Cushion cut cert gia - 1.50,

£8437.33
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Round brilliant gia certified - round,

Round brilliant gia certified - round,

£2703.72
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Natural mined diamond - natural, 1.01

Natural mined diamond - natural, 1.01

£4304.33
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Gia certified carat oval - gia,

Gia certified carat oval - gia,

£2636.12
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Gia certified vvs2 pear - certified, vvs2/g

Gia certified vvs2 pear - certified, vvs2/g

£4693.95
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Cert gia emerald cut - cert.,

Cert gia emerald cut - cert.,

£8194.69
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Oval cut ct certificate - 1.20,

Oval cut ct certificate - 1.20,

£5727.10
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Gia publications diamond - gia,

Gia publications diamond - gia,

£15.02
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Emerald cut cert gia - cut,

Emerald cut cert gia - cut,

£4373.70
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Natural mined diamond ct - natural,

Natural mined diamond ct - natural,

£9877.94
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Cert gia carat asscher - 1.70,

Cert gia carat asscher - 1.70,

£7674.75
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Certificate gia carat round - certificate,

Certificate gia carat round - certificate,

£2770.65
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Gia 46ct round loose diamond - gia,

Gia 46ct round loose diamond - gia,

£568.28
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Gia round brilliant - round,

Gia round brilliant - round,

£5174.62
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Cert gia emerald cut - ct,

Cert gia emerald cut - ct,

£4358.51
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Gia certified real - ct,

Gia certified real - ct,

£231.02
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Gia certified vintage platinum - certified,

Gia certified vintage platinum - certified,

£1432.97
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Round carat cert gia - round, 3.02

Round carat cert gia - round, 3.02

£20038.59
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Cert gia carat - cert., round

Cert gia carat - cert., round

£3098.93
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Round certificate gia - 2.50,

Round certificate gia - 2.50,

£58943.99
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Carat cert gia asscher - 1.50, cert.

Carat cert gia asscher - 1.50, cert.

£3291.79
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Carat diamond ring 4 - diamond, 4.5

Carat diamond ring 4 - diamond, 4.5

£1080.59
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Round certificate gia - ct,

Round certificate gia - ct,

£27066.92
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Round brilliant baguette - brilliant, &

Round brilliant baguette - brilliant, &

£3004.13
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Gia certified ct european - certified, 1.80

Gia certified ct european - certified, 1.80

£5572.66
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Cushion cut diamond stud - cut,

Cushion cut diamond stud - cut,

£2627.86
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Cert gia carat cushion - 1.30,

Cert gia carat cushion - 1.30,

£4430.72
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Carat cert gia round - 1.32,

Carat cert gia round - 1.32,

£11223.45
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Ctw round brilliant - , k

Ctw round brilliant - , k

£436.35
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Cert gia carat - cert.,

Cert gia carat - cert.,

£4477.36
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Gia diamond essentials course - essentials,

Gia diamond essentials course - essentials,

£56.31
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Carat lab grown stone 14k - 2.5,

Carat lab grown stone 14k - 2.5,

£1652.27
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Cushion diamond engagement - cushion,

Cushion diamond engagement - cushion,

£1902.64
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Cushion diamond engagement - diamond,

Cushion diamond engagement - diamond,

£1902.64
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Cushion diamond engagement - diamond,

Cushion diamond engagement - diamond,

£1902.64
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Oval diamond trilogy ring - diamond,

Oval diamond trilogy ring - diamond,

£1777.89
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950 platinum designer ct - 950, 1.50

950 platinum designer ct - 950, 1.50

£1496.06
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Emerald cut cert gia - ct,

Emerald cut cert gia - ct,

£31595.07
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Cushion diamond engagement - cushion,

Cushion diamond engagement - cushion,

£1484.93
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Wedding natural diamond ring - natural,

Wedding natural diamond ring - natural,

£1569.08
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📊96 listings · from £15.02 · avg £4489.42
⚠️ These listings were last updated more than 20 days ago. Search for fresh listings

Browse 96 gia diamond listings currently in our index. Prices range from £15.02 to £58943.99, with an average of £4489.42. 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 gia diamond →

Try this: natural loose gemstones | peridot gemstone | rubellite | ruby gemstone | rough diamond | star sapphire | tanzanite gemstones | topaz gemstones | 29x12 15 | rough gemstones

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Everything you need to know about gia diamond

Whether you are looking for a brand-new or second-hand gia diamond, 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 £15.02, while premium listings can reach £58943.99 — giving you a wide budget spread to work with. The average price of £4489.42 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.

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