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Oval|Natural|GIA

1.20ct D SI2 Oval Natural Diamond

ID • D/SI2 • GIA 2566223748

Certificate GIA 2566223748

Diamond specifications and retailer prices

From £2,008 GBP
As of November 6, 2026
Save £2,628 GBP (57%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £4,773 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 D 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 2566223748. Listed at 20 retailers as of November 5, 2026, with a 131% 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
D
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2566223748
Dimensions8.22 × 5.95 × 3.79 mm
L/W Ratio1.38
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cavity, Indented Natural, Natural
Top View
8.22 mm5.95 mm1.20 ctD / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2566223748
Side View
Table 64.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 63.6%

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: £4,773 GBP|Low: £1,989 GBP|High: £4,811 GBP|Avg: £2,983 GBP|-0.8%
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
Retailer 18
Retailer 19
November 6, 2026
Retailer 18£2,008 GBP
Retailer 2£2,083 GBP
Retailer 15£2,363 GBP
Retailer 10£2,406 GBP
Retailer 8£2,412 GBP
Retailer 7£2,456 GBP
Retailer 12£2,616 GBP
Retailer 6£2,661 GBP
Retailer 19£2,661 GBP
Retailer 14£2,754 GBP
Retailer 3£2,764 GBP
Retailer 11£2,769 GBP
Retailer 13£2,791 GBP
Retailer 9£2,824 GBP
Retailer 4£3,071 GBP
Retailer 17£3,114 GBP
Retailer 16£4,439 GBP
Retailer 5£4,636 GBP
Queensmith£4,773 GBP

23 data points across 19 retailers

20 retailers£2,008 GBP to £4,636 GBP

A
Cheapest Retailer
-
£2,008 GBP
A
Retailer 2
-
£2,083 GBP
View
A
Retailer 3
-
£2,363 GBP
View
A
Retailer 4
-
£2,406 GBP
View
A
Retailer 5
-
£2,412 GBP
View
A
Retailer 6
-
£2,456 GBP
View
Final sale: no returns
A
Retailer 7
-
£2,487 GBP
View
A
Retailer 8
-
£2,616 GBP
View
Retailer 9
-
£2,661 GBP
View
Price last confirmed 8 days ago
B+
Retailer 10
-
£2,661 GBP
View
B+
Retailer 11
-
£2,754 GBP
View
B+
Retailer 12
-
£2,764 GBP
View
B+
Retailer 13
-
£2,769 GBP
View
B+
Retailer 14
-
£2,791 GBP
View
B+
Retailer 15
-
£2,824 GBP
View
B+
Retailer 16
-
£3,071 GBP
View
B+
Retailer 17
-
£3,114 GBP
View
B
Retailer 18
-
£4,439 GBP
View
B
Retailer 19
-
£4,636 GBP
View
Most Expensive
Queensmith
2566223748 · Oct 28
£4,773 GBP
View
Price last confirmed 9 days ago
19 more retailers have this diamond
Prices start from £2,008 GBPSave up to £2,628 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
£2,008 GBP