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Oval|Natural|GIA

1.21ct E SI1 Oval Natural Diamond

EX • E/SI1 • GIA 1232561133

Certificate GIA 1232561133

Diamond specifications and retailer prices

From £2,455 GBP
As of November 6, 2026
Save £922 GBP (27%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £3,377 GBP at Jared · As of November 6, 2026
View at Jared

About this 1.21ct natural oval diamond

This 1.21ct natural oval sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1232561133. Listed at 8 retailers as of November 6, 2026, with prices from £2,455 to £3,377, a £922 spread on the same certified stone. Jared lists it at £3,377. 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
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.48°
Pavilion angle38.65°
OriginNatural
Grading LabGIA
CertificateGIA 1232561133
Dimensions8.11 × 5.96 × 3.77 mm
L/W Ratio1.36
Culet sizeNone
Top View
8.11 mm5.96 mm1.21 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1232561133
Side View
Table 56.0%Crown 39.48°Girdle: STK-THKPavilion 38.65°Culet: NoneDepth 63.3%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: £3,377 GBP|Low: £2,455 GBP|High: £3,377 GBP|Avg: £2,873 GBP
Jared
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 18, 2026
Retailer 4£2,455 GBP
Retailer 5£2,456 GBP
Retailer 2£2,499 GBP
Retailer 6£2,516 GBP
Retailer 3£3,082 GBP
Retailer 7£3,265 GBP
Retailer 8£3,265 GBP
Jared£3,377 GBP

5 data points across 8 retailers

8 retailers£2,455 GBP to £3,377 GBP

A
Cheapest Retailer
-
£2,455 GBP
A
Retailer 2
-
£2,456 GBP
View
A
Retailer 3
-
£2,499 GBP
View
A
Retailer 4
-
£2,516 GBP
View
B+
Retailer 5
-
£3,082 GBP
View
B+
Retailer 6
-
£3,265 GBP
View
B+
Retailer 7
-
£3,265 GBP
View
Most Expensive
B
Jared
156204466 · Nov 6
£3,377 GBP
$4,520 USD
View
7 more retailers have this diamond
Prices start from £2,455 GBPSave up to £922 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
£2,455 GBP