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Round|Natural|GIA

1.21ct E SI2 Round Natural Diamond

EX • E/SI2 • GIA 6552105693

Certificate GIA 6552105693

Diamond specifications and retailer prices

From £1,911 GBP
HK$20,000 HKD
As of October 31, 2026
Save £2,244 GBP (54%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £4,406 GBP at NZ Jewellers · As of September 25, 2026
View at NZ Jewellers

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 6552105693. Listed at 12 retailers as of October 29, 2026, with a 117% 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 6552105693
Dimensions6.79 × 6.77 × 4.26 mm
L/W Ratio1.00
Top View
6.79 mm6.77 mm1.21 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6552105693
Side View
Table 56.0%Crown 35.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.8%

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 31
Current: £1,911 GBP|Low: £1,891 GBP|High: £4,280 GBP|Avg: £2,785 GBP|-7.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 31, 2026
Retailer 1£1,911 GBP
Retailer 7£2,251 GBP
Retailer 6£2,280 GBP
Retailer 8£2,517 GBP
Retailer 2£2,545 GBP
Retailer 9£2,651 GBP
Retailer 3£2,892 GBP
Retailer 5£3,800 GBP
Retailer 4£4,154 GBP

30 data points across 9 retailers

12 retailers£1,911 GBP to £4,154 GBP

A
Cheapest Retailer
-
£1,911 GBP
HK$20,000 HKD
A
Retailer 2
-
£2,196 GBP
A$4,527 AUD
View
A
Retailer 3
-
£2,251 GBP
$3,016 USD
View
A
Retailer 4
-
£2,280 GBP
$3,055 USD
View
Final sale: no returns
A
Retailer 5
-
£2,517 GBP
$3,372 USD
View
A
Retailer 6
-
£2,545 GBP
View
Retailer 7
-
£2,651 GBP
SGD 4,800 SGD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
£2,892 GBP
€3,691 EUR
View
Retailer 9
-
£3,800 GBP
$5,091 USD
View
Price last confirmed 8 days ago
B+
Retailer 10
-
£4,154 GBP
View
Retailer 11
-
£4,305 GBP
$5,768 USD
View
Price last confirmed 20 days ago
Most Expensive
NZ Jewellers
761f3a10-8010-4362-948f-597dc9aeb9f5 · Sep 25
£4,406 GBP
$5,904 USD
View
Price last confirmed 36 days ago
11 more retailers have this diamond
Prices start from £1,911 GBPSave up to £2,244 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
£1,911 GBP