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Oval|Natural|GIA

1.21ct I SI1 Oval Natural Diamond

EX • I/SI1 • GIA 2537021463

Certificate GIA 2537021463

Diamond specifications and retailer prices

From £2,344 GBP
As of November 4, 2026
Save £3,253 GBP (58%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £5,597 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 I 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 2537021463. Listed at 20 retailers as of November 4, 2026, with prices from £2,344 to £5,597, a £3,253 spread on the same certified stone. NZ Jewellers lists it at £5,597. 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2537021463
Dimensions8.61 × 5.74 × 3.67 mm
L/W Ratio1.50
Top View
8.61 mm5.74 mm1.21 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2537021463
Side View
Table 62.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 63.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: £3,234 GBP|Low: £2,344 GBP|High: £5,177 GBP|Avg: £3,387 GBP|+1.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 7£2,344 GBP
Retailer 3£2,560 GBP
Retailer 11£2,686 GBP
Retailer 2£2,779 GBP
Retailer 4£3,022 GBP
Retailer 9£3,166 GBP
Retailer 1£3,234 GBP
Retailer 12£3,425 GBP
Retailer 8£3,635 GBP
Retailer 5£3,921 GBP
Retailer 10£4,643 GBP
Retailer 6£5,103 GBP

46 data points across 12 retailers

20 retailers£2,344 GBP to £5,597 GBP

B+
Cheapest Retailer
-
£2,344 GBP
B+
Retailer 2
-
£2,560 GBP
View
B
Retailer 3
-
£2,686 GBP
View
Final sale: no returns
B+
Retailer 4
-
£2,779 GBP
View
Retailer 5
-
£2,910 GBP
View
Price last confirmed 8 days ago
B
Retailer 6
-
£2,910 GBP
View
B
Retailer 7
-
£3,022 GBP
View
B
Retailer 8
-
£3,166 GBP
View
B
Retailer 9
-
£3,234 GBP
View
B
Retailer 10
-
£3,287 GBP
View
B
Retailer 11
-
£3,287 GBP
View
B
Retailer 12
-
£3,358 GBP
View
B
Retailer 13
-
£3,392 GBP
View
B
Retailer 14
-
£3,393 GBP
View
Retailer 15
-
£3,425 GBP
View
Price last confirmed 28 days ago
B
Retailer 16
-
£3,635 GBP
View
B
Retailer 17
-
£3,921 GBP
View
B
Retailer 18
-
£4,643 GBP
View
B
Retailer 19
-
£5,103 GBP
View
Most Expensive
B
NZ Jewellers
81d4bb3b-4d45-438a-afe8-31a16914d4ec · Nov 5
£5,597 GBP
$7,491 USD
View
19 more retailers have this diamond
Prices start from £2,344 GBPSave up to £3,253 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+
1.21ct Oval
£2,344 GBP