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Oval|Natural|GIA

1.20ct J SI1 Oval Natural Diamond

ID • J/SI1 • GIA 2517859105

Certificate GIA 2517859105

Diamond specifications and retailer prices

From £2,385 GBP
$3,195 USD
As of October 30, 2026
Save £2,782 GBP (54%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £5,166 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.2ct natural oval diamond

This 1.2ct natural oval sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2517859105. Listed at 21 retailers as of October 30, 2026, with prices from £2,385 to £5,166, a £2,782 spread on the same certified stone. NZ Jewellers lists it at £5,166. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.20
Carat
J
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2517859105
Dimensions8.50 × 5.91 × 3.73 mm
L/W Ratio1.44
Top View
8.50 mm5.91 mm1.20 ctJ / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2517859105
Side View
Table 57.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 63.1%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £5,166 GBP|Low: £2,385 GBP|High: £5,166 GBP|Avg: £3,340 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 10£2,385 GBP
Retailer 7£2,479 GBP
Retailer 9£2,582 GBP
Retailer 3£2,687 GBP
Retailer 5£2,768 GBP
Retailer 11£3,100 GBP
Retailer 8£3,176 GBP
Retailer 4£3,356 GBP
Retailer 2£3,645 GBP
Retailer 6£4,986 GBP
NZ Jewellers£5,166 GBP

43 data points across 11 retailers

21 retailers£2,385 GBP to £5,166 GBP

B
Cheapest Retailer
-
£2,385 GBP
$3,195 USD
B
Retailer 2
-
£2,479 GBP
$3,322 USD
View
Final sale: no returns
B
Retailer 3
-
£2,523 GBP
$3,381 USD
View
B
Retailer 4
-
£2,525 GBP
$3,383 USD
View
B
Retailer 5
-
£2,582 GBP
$3,460 USD
View
B
Retailer 6
-
£2,687 GBP
$3,600 USD
View
B
Retailer 7
-
£2,687 GBP
$3,600 USD
View
B
Retailer 8
-
£2,689 GBP
$3,604 USD
View
B
Retailer 9
-
£2,768 GBP
View
B
Retailer 10
-
£2,790 GBP
$3,738 USD
View
B
Retailer 11
-
£2,926 GBP
$3,920 USD
View
B
Retailer 12
-
£2,926 GBP
$3,920 USD
View
B
Retailer 13
-
£3,023 GBP
$4,050 USD
View
B
Retailer 14
-
£3,047 GBP
$4,082 USD
View
B
Retailer 15
-
£3,100 GBP
$4,153 USD
View
B
Retailer 16
-
£3,174 GBP
$4,253 USD
View
Retailer 17
-
£3,176 GBP
A$6,548 AUD
View
Price last confirmed 22 days ago
B
Retailer 18
-
£3,356 GBP
€4,283 EUR
View
B
Retailer 19
-
£3,645 GBP
ZAR 78,902 ZAR
View
B
Retailer 20
-
£4,986 GBP
View
Most Expensive
B
NZ Jewellers
94f23248-e435-4f68-8375-fba0ae641fd8 · Oct 30
£5,166 GBP
$6,922 USD
View
20 more retailers have this diamond
Prices start from £2,385 GBPSave up to £2,782 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B
1.20ct Oval
£2,385 GBP