Round|Natural|GIA

1.21ct E SI2 Round Natural Diamond

EX • E/SI2 • GIA 3535398953

Certificate GIA 3535398953

Diamond specifications and retailer prices

From £1,381 GBP
₹176,233 INR
As of October 30, 2026
Save £1,093 GBP (44%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £3,403 GBP at MOH London · As of October 8, 2026
View at MOH London

About this 1.21ct natural round diamond

This 1.21ct natural round sits in the classic one-carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 3535398953. Listed at 16 retailers as of October 29, 2026, with a 79% 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
E
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 3535398953
Dimensions6.84 × 6.81 × 4.24 mm
L/W Ratio1.00
Star length50%
Lower girdle75%
Top View
6.84 mm6.81 mm1.21 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 3535398953
Side View
Table 57.0%Crown 35.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.1%

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: Oct 30
Current: £3,403 GBP|Low: £1,381 GBP|High: £3,416 GBP|Avg: £2,049 GBP|-0.4%
MOH London
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
October 31, 2026
Retailer 11£1,381 GBP
Retailer 10£1,449 GBP
Retailer 4£1,719 GBP
Retailer 15£1,723 GBP
Retailer 3£1,924 GBP
Retailer 2£1,945 GBP
Retailer 6£2,029 GBP
Retailer 7£2,060 GBP
Retailer 5£2,082 GBP
Retailer 8£2,113 GBP
Retailer 9£2,145 GBP
Retailer 12£2,232 GBP
Retailer 14£2,383 GBP
Retailer 13£2,474 GBP
MOH London£3,403 GBP

28 data points across 15 retailers

16 retailers£1,381 GBP to £2,474 GBP

A
Cheapest Retailer
-
£1,381 GBP
₹176,233 INR
A
Retailer 2
-
£1,449 GBP
$1,942 USD
View
Final sale: no returns
Retailer 3
-
£1,719 GBP
View
Price last confirmed 31 days ago
Retailer 4
-
£1,723 GBP
$2,309 USD
View
Price last confirmed 21 days ago
Retailer 5
-
£1,924 GBP
$2,578 USD
View
Price last confirmed 23 days ago
A
Retailer 6
-
£1,945 GBP
View
Retailer 7
-
£2,017 GBP
$2,702 USD
View
Price last confirmed 61 days ago
Retailer 8
-
£2,029 GBP
$2,719 USD
View
Price last confirmed 22 days ago
Retailer 9
-
£2,060 GBP
$2,760 USD
View
Price last confirmed 20 days ago
A
Retailer 10
-
£2,113 GBP
$2,831 USD
View
A
Retailer 11
-
£2,145 GBP
€2,737 EUR
View
A
Retailer 12
-
£2,232 GBP
$2,990 USD
View
Retailer 13
-
£2,327 GBP
$3,118 USD
View
Price last confirmed 54 days ago
B+
Retailer 14
-
£2,383 GBP
$3,193 USD
View
A
Retailer 15
-
£2,474 GBP
$3,315 USD
View
Most Expensive
MOH London
9FE46CAFF · Oct 8
£3,403 GBP
View
Price last confirmed 23 days ago
15 more retailers have this diamond
Prices start from £1,381 GBPSave up to £1,093 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 Round
£1,381 GBP