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Oval|Natural|GIA

1.21ct I SI2 Oval Natural Diamond

EX • I/SI2 • GIA 2235566747

Certificate GIA 2235566747

Diamond specifications and retailer prices

From £1,815 GBP
As of November 4, 2026
Save £2,297 GBP (56%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £4,297 GBP at NZ Jewellers · As of October 20, 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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2235566747. Listed at 22 retailers as of November 4, 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

1.21
Carat
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.42°
Pavilion angle41.12°
OriginNatural
Grading LabGIA
CertificateGIA 2235566747
Dimensions8.51 × 5.86 × 3.81 mm
L/W Ratio1.45
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
8.51 mm5.86 mm1.21 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2235566747
Side View
Table 60.0%Crown 36.42°Girdle: MED-THKPavilion 41.12°Culet: NoneDepth 65.1%

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: £2,870 GBP|Low: £1,780 GBP|High: £4,173 GBP|Avg: £2,498 GBP|+1.4%
Retailer 1
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
November 6, 2026
Retailer 10£1,815 GBP
Retailer 7£1,880 GBP
Retailer 6£1,950 GBP
Retailer 4£2,062 GBP
Retailer 11£2,234 GBP
Retailer 13£2,234 GBP
Retailer 12£2,320 GBP
Retailer 5£2,427 GBP
Retailer 15£2,455 GBP
Retailer 8£2,551 GBP
Retailer 2£2,592 GBP
Retailer 14£2,592 GBP
Retailer 3£2,675 GBP
Retailer 1£2,870 GBP
Retailer 9£4,113 GBP

44 data points across 15 retailers

22 retailers£1,815 GBP to £4,113 GBP

A
Cheapest Retailer
-
£1,815 GBP
A
Retailer 2
-
£1,880 GBP
View
A
Retailer 3
-
£1,892 GBP
View
B+
Retailer 4
-
£1,950 GBP
View
B+
Retailer 5
-
£2,001 GBP
View
B+
Retailer 6
-
£2,022 GBP
View
B+
Retailer 7
-
£2,062 GBP
View
Final sale: no returns
Retailer 8
-
£2,234 GBP
View
Price last confirmed 17 days ago
Retailer 9
-
£2,234 GBP
View
Price last confirmed 8 days ago
B+
Retailer 10
-
£2,234 GBP
View
Retailer 11
-
£2,320 GBP
View
Price last confirmed 21 days ago
B+
Retailer 12
-
£2,320 GBP
View
B+
Retailer 13
-
£2,427 GBP
View
B+
Retailer 14
-
£2,455 GBP
View
B+
Retailer 15
-
£2,551 GBP
View
Retailer 16
-
£2,578 GBP
View
Price last confirmed 16 days ago
B
Retailer 17
-
£2,592 GBP
View
B
Retailer 18
-
£2,592 GBP
View
B
Retailer 19
-
£2,675 GBP
View
B+
Retailer 20
-
£2,870 GBP
View
B
Retailer 21
-
£4,113 GBP
View
Most Expensive
NZ Jewellers
7d1c17a7-9865-4798-ba82-035db5a5b8f9 · Oct 20
£4,297 GBP
$5,751 USD
View
Price last confirmed 16 days ago
21 more retailers have this diamond
Prices start from £1,815 GBPSave up to £2,297 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
£1,815 GBP