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Oval|Natural|GIA

1.20ct I SI2 Oval Natural Diamond

ID • I/SI2 • GIA 2556450165

Certificate GIA 2556450165

Diamond specifications and retailer prices

From £1,907 GBP
As of November 6, 2026
Save £2,427 GBP (56%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £4,334 GBP at NZ Jewellers · As of November 5, 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2556450165. Listed at 20 retailers as of November 5, 2026, with prices from £1,907 to £4,334, a £2,427 spread on the same certified stone. NZ Jewellers lists it at £4,334. 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
I
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle42.07°
Pavilion angle35.73°
OriginNatural
Grading LabGIA
CertificateGIA 2556450165
Dimensions8.07 × 5.76 × 3.67 mm
L/W Ratio1.40
Culet sizeNone
Key to symbols
Feather, Pinpoint, Cloud
Top View
8.07 mm5.76 mm1.20 ctI / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2556450165
Side View
Table 63.0%Crown 42.07°Girdle: THK-VTKPavilion 35.73°Culet: NoneDepth 63.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £1,907 GBP|Low: £1,907 GBP|High: £4,182 GBP|Avg: £2,550 GBP|-3.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 1£1,907 GBP
Retailer 7£1,913 GBP
Retailer 5£2,185 GBP
Retailer 9£2,296 GBP
Retailer 8£2,374 GBP
Retailer 2£2,446 GBP
Retailer 4£2,574 GBP
Retailer 3£2,897 GBP
Retailer 6£4,149 GBP

28 data points across 9 retailers

20 retailers£1,907 GBP to £4,334 GBP

A
Cheapest Retailer
-
£1,907 GBP
A
Retailer 2
-
£1,913 GBP
View
B+
Retailer 3
-
£2,124 GBP
View
B+
Retailer 4
-
£2,185 GBP
View
B+
Retailer 5
-
£2,208 GBP
View
B+
Retailer 6
-
£2,296 GBP
View
Final sale: no returns
B+
Retailer 7
-
£2,374 GBP
View
B+
Retailer 8
-
£2,446 GBP
View
B+
Retailer 9
-
£2,488 GBP
View
Retailer 10
-
£2,488 GBP
View
Price last confirmed 8 days ago
B+
Retailer 11
-
£2,574 GBP
View
B
Retailer 12
-
£2,584 GBP
View
B
Retailer 13
-
£2,595 GBP
View
B
Retailer 14
-
£2,660 GBP
View
B
Retailer 15
-
£2,662 GBP
View
B
Retailer 16
-
£2,870 GBP
View
B+
Retailer 17
-
£2,897 GBP
View
B
Retailer 18
-
£3,700 GBP
View
B
Retailer 19
-
£4,149 GBP
View
Most Expensive
B
NZ Jewellers
a1294cdc-a426-4a6d-b4d7-04d2520b6c20 · Nov 5
£4,334 GBP
$5,801 USD
View
19 more retailers have this diamond
Prices start from £1,907 GBPSave up to £2,427 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.

A
1.20ct Oval
£1,907 GBP