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Oval|Natural|GIA

1.21ct D SI2 Oval Natural Diamond

ID • D/SI2 • GIA 2566577539

Certificate GIA 2566577539

Diamond specifications and retailer prices

From £1,344 GBP
As of November 4, 2026
Save £2,254 GBP (63%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £3,598 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.21ct natural oval diamond

This 1.21ct 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 2566577539. Listed at 17 retailers as of November 4, 2026, with prices from £1,344 to £3,598, a £2,254 spread on the same certified stone. NZ Jewellers lists it at £3,598. 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

1.21
Carat
D
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 2566577539
Dimensions8.34 × 5.76 × 3.65 mm
L/W Ratio1.45
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cavity, Needle, Indented Natural
Top View
8.34 mm5.76 mm1.21 ctD / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 2566577539
Side View
Table 59.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 63.3%

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 4
Current: £3,598 GBP|Low: £1,344 GBP|High: £3,676 GBP|Avg: £1,925 GBP|-2.1%
NZ Jewellers
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 14£1,344 GBP
Retailer 17£1,494 GBP
Retailer 9£1,538 GBP
Retailer 5£1,588 GBP
Retailer 3£1,597 GBP
Retailer 4£1,679 GBP
Retailer 2£1,692 GBP
Retailer 8£1,721 GBP
Retailer 12£1,721 GBP
Retailer 10£1,799 GBP
Retailer 7£1,801 GBP
Retailer 11£1,815 GBP
Retailer 13£1,870 GBP
Retailer 6£1,890 GBP
Retailer 15£2,147 GBP
Retailer 16£3,015 GBP
NZ Jewellers£3,598 GBP

20 data points across 17 retailers

17 retailers£1,344 GBP to £3,598 GBP

A
Cheapest Retailer
-
£1,344 GBP
A
Retailer 2
-
£1,494 GBP
View
A
Retailer 3
-
£1,538 GBP
View
A
Retailer 4
-
£1,588 GBP
View
Final sale: no returns
A
Retailer 5
-
£1,597 GBP
View
A
Retailer 6
-
£1,679 GBP
View
A
Retailer 7
-
£1,692 GBP
View
Retailer 8
-
£1,721 GBP
View
Price last confirmed 8 days ago
A
Retailer 9
-
£1,721 GBP
View
A
Retailer 10
-
£1,799 GBP
View
A
Retailer 11
-
£1,801 GBP
View
A
Retailer 12
-
£1,815 GBP
View
A
Retailer 13
-
£1,870 GBP
View
A
Retailer 14
-
£1,890 GBP
View
A
Retailer 15
-
£2,147 GBP
View
B+
Retailer 16
-
£3,015 GBP
View
Most Expensive
B+
NZ Jewellers
81fe73c3-3bc2-47cc-83f8-91dab84fcb18 · Nov 5
£3,598 GBP
$4,816 USD
View
16 more retailers have this diamond
Prices start from £1,344 GBPSave up to £2,254 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
1.21ct Oval
£1,344 GBP