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Oval|Natural|GIA

1.20ct F SI2 Oval Natural Diamond

ID • F/SI2 • GIA 1539005392

Certificate GIA 1539005392

Diamond specifications and retailer prices

From £1,817 GBP
As of November 6, 2026
Save £2,302 GBP (56%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £4,550 GBP at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.2ct natural oval diamond

This 1.2ct natural oval sits in the classic one-carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1539005392. Listed at 19 retailers as of November 5, 2026, with a 127% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
F
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1539005392
Dimensions8.51 × 5.72 × 3.67 mm
L/W Ratio1.49
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Crystal, Feather, Cavity, Indented Natural
Top View
8.51 mm5.72 mm1.20 ctF / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1539005392
Side View
Table 63.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 64.2%

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: £4,550 GBP|Low: £1,817 GBP|High: £4,564 GBP|Avg: £2,857 GBP|-0.3%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
November 6, 2026
Retailer 5£1,817 GBP
Retailer 2£1,889 GBP
Retailer 13£2,161 GBP
Retailer 8£2,182 GBP
Retailer 10£2,324 GBP
Retailer 15£2,365 GBP
Retailer 9£2,386 GBP
Retailer 12£2,432 GBP
Retailer 17£2,455 GBP
Retailer 6£2,471 GBP
Retailer 11£2,529 GBP
Retailer 3£2,548 GBP
Retailer 4£2,728 GBP
Retailer 7£2,767 GBP
Retailer 14£3,943 GBP
Retailer 16£4,119 GBP
Queensmith£4,550 GBP

23 data points across 17 retailers

19 retailers£1,817 GBP to £4,119 GBP

A
Cheapest Retailer
-
£1,817 GBP
A
Retailer 2
-
£1,889 GBP
View
A
Retailer 3
-
£2,161 GBP
View
A
Retailer 4
-
£2,182 GBP
View
Final sale: no returns
B+
Retailer 5
-
£2,275 GBP
View
B+
Retailer 6
-
£2,324 GBP
View
B+
Retailer 7
-
£2,365 GBP
View
B+
Retailer 8
-
£2,378 GBP
View
Retailer 9
-
£2,386 GBP
View
Price last confirmed 9 days ago
B+
Retailer 10
-
£2,432 GBP
View
B+
Retailer 11
-
£2,455 GBP
View
B+
Retailer 12
-
£2,471 GBP
View
B+
Retailer 13
-
£2,529 GBP
View
B+
Retailer 14
-
£2,548 GBP
View
B+
Retailer 15
-
£2,728 GBP
View
B+
Retailer 16
-
£2,767 GBP
View
B
Retailer 17
-
£3,943 GBP
View
B
Retailer 18
-
£4,119 GBP
View
Most Expensive
Queensmith
1539005392 · Oct 28
£4,550 GBP
View
Price last confirmed 9 days ago
18 more retailers have this diamond
Prices start from £1,817 GBPSave up to £2,302 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
£1,817 GBP