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Princess|Natural|GIA

1.21ct E SI1 Princess Natural Diamond

EX • E/SI1 • GIA 5241037151

Certificate GIA 5241037151

Diamond specifications and retailer prices

From £1,223 GBP
HK$12,800 HKD
As of October 27, 2026
Save £2,294 GBP (65%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £3,517 GBP at NZ Jewellers · As of October 24, 2026
View at NZ Jewellers

About this 1.21ct natural princess diamond

This 1.21ct natural princess 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 5241037151. Listed at 11 retailers as of October 24, 2026, with prices from £1,223 to £3,517, a £2,294 spread on the same certified stone. NZ Jewellers lists it at £3,517. 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
SymmetryVery Good
FluorescenceNone
Pavilion angle55.65°
OriginNatural
Grading LabGIA
CertificateGIA 5241037151
Dimensions5.99 × 5.98 × 4.33 mm
L/W Ratio1.00
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
5.99 mm5.98 mm1.21 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5241037151
Side View
Table 76.0%CrownGirdle: Slightly ThickPavilion 55.65°Culet: NoneDepth 72.4%

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 27
Current: £1,526 GBP|Low: £1,223 GBP|High: £2,983 GBP|Avg: £1,916 GBP|+1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 26, 2026
Retailer 5£1,223 GBP
Retailer 1£1,526 GBP
Retailer 4£1,567 GBP
Retailer 7£1,720 GBP
Retailer 8£1,755 GBP
Retailer 3£2,148 GBP
Retailer 6£2,563 GBP
Retailer 2£2,952 GBP

36 data points across 8 retailers

11 retailers£1,223 GBP to £3,517 GBP

A
Cheapest Retailer
-
£1,223 GBP
HK$12,800 HKD
Retailer 2
-
£1,526 GBP
€1,947 EUR
View
Price last confirmed 4 days ago
A
Retailer 3
-
£1,567 GBP
$2,100 USD
View
A
Retailer 4
-
£1,682 GBP
$2,254 USD
View
A
Retailer 5
-
£1,720 GBP
SGD 3,115 SGD
View
A
Retailer 6
-
£1,755 GBP
A$3,618 AUD
View
A
Retailer 7
-
£1,760 GBP
$2,358 USD
View
B+
Retailer 8
-
£2,148 GBP
€2,741 EUR
View
B
Retailer 9
-
£2,563 GBP
€3,270 EUR
View
B+
Retailer 10
-
£2,952 GBP
View
Most Expensive
B
NZ Jewellers
00bdecad-ab76-4164-9369-abfc656bff54 · Oct 24
£3,517 GBP
$4,712 USD
View
10 more retailers have this diamond
Prices start from £1,223 GBPSave up to £2,294 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 Princess
£1,223 GBP