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Oval|Natural|GIA

1.21ct I SI1 Oval Natural Diamond

EX • I/SI1 • GIA 2235885504

Certificate GIA 2235885504

Diamond specifications and retailer prices

From £1,281 GBP
As of November 6, 2026
Save £2,366 GBP (65%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £3,647 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 2235885504. Listed at 14 retailers as of November 5, 2026, with prices from £1,281 to £3,647, a £2,366 spread on the same certified stone. NZ Jewellers lists it at £3,647. 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
Pavilion angle36.97°
OriginNatural
Grading LabGIA
CertificateGIA 2235885504
Dimensions8.16 × 5.87 × 3.82 mm
L/W Ratio1.39
Key to symbols
Crystal, Feather, Needle
Top View
8.16 mm5.87 mm1.21 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2235885504
Side View
Table 59.0%CrownGirdle: STK-THKPavilion 36.97°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 6
Current: £3,647 GBP|Low: £1,281 GBP|High: £3,878 GBP|Avg: £2,192 GBP|-6.0%
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
November 6, 2026
Retailer 13£1,281 GBP
Retailer 4£1,629 GBP
Retailer 5£1,656 GBP
Retailer 2£1,692 GBP
Retailer 3£1,745 GBP
Retailer 6£1,783 GBP
Retailer 12£1,825 GBP
Retailer 9£1,848 GBP
Retailer 11£1,913 GBP
Retailer 7£2,170 GBP
Retailer 10£2,659 GBP
Retailer 8£3,048 GBP
NZ Jewellers£3,647 GBP

31 data points across 13 retailers

14 retailers£1,281 GBP to £3,647 GBP

A
Cheapest Retailer
-
£1,281 GBP
A
Retailer 2
-
£1,629 GBP
View
A
Retailer 3
-
£1,656 GBP
View
Final sale: no returns
A
Retailer 4
-
£1,692 GBP
View
A
Retailer 5
-
£1,745 GBP
View
A
Retailer 6
-
£1,783 GBP
View
A
Retailer 7
-
£1,825 GBP
View
B+
Retailer 8
-
£1,848 GBP
View
A
Retailer 9
-
£1,913 GBP
View
B+
Retailer 10
-
£1,980 GBP
View
B+
Retailer 11
-
£2,170 GBP
View
B+
Retailer 12
-
£2,659 GBP
View
B
Retailer 13
-
£3,048 GBP
View
Most Expensive
B
NZ Jewellers
f2c76e6b-8d0f-4960-8497-6b0627693bb3 · Nov 5
£3,647 GBP
$4,882 USD
View
13 more retailers have this diamond
Prices start from £1,281 GBPSave up to £2,366 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
£1,281 GBP