CaratHunter
Plans
Princess|Natural|GIA

1.21ct J SI2 Princess Natural Diamond

EX • J/SI2 • GIA 2567739869

Certificate GIA 2567739869

Diamond specifications and retailer prices

From £1,142 GBP
As of November 4, 2026
Save £905 GBP (44%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £2,047 GBP at Helzberg Diamonds · As of November 6, 2026
View at Helzberg Diamonds

About this 1.21ct natural princess diamond

This 1.21ct natural princess sits in the classic one-carat band, graded J 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 2567739869. Listed at 11 retailers as of November 4, 2026, with prices from £1,142 to £2,047, a £905 spread on the same certified stone. Helzberg Diamonds lists it at £2,047. 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
J
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle24.14°
Pavilion angle39.58°
OriginNatural
Grading LabGIA
CertificateGIA 2567739869
Dimensions5.80 × 5.77 × 4.22 mm
L/W Ratio1.01
Culet sizeNone
Top View
5.80 mm5.77 mm1.21 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2567739869
Side View
Table 72.0%Crown 24.14°Girdle: STK-THKPavilion 39.58°Culet: NDepth 73.0%

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: £2,047 GBP|Low: £1,142 GBP|High: £2,047 GBP|Avg: £1,399 GBP
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 9£1,142 GBP
Retailer 10£1,142 GBP
Retailer 2£1,198 GBP
Retailer 3£1,243 GBP
Retailer 6£1,267 GBP
Retailer 8£1,378 GBP
Retailer 11£1,527 GBP
Retailer 5£1,603 GBP
Retailer 4£1,612 GBP
Retailer 7£1,889 GBP
Helzberg Diamonds£2,047 GBP

10 data points across 11 retailers

11 retailers£1,142 GBP to £2,047 GBP

A
Cheapest Retailer
-
£1,142 GBP
A
Retailer 2
-
£1,142 GBP
View
A
Retailer 3
-
£1,198 GBP
View
B+
Retailer 4
-
£1,243 GBP
View
B+
Retailer 5
-
£1,267 GBP
View
B+
Retailer 6
-
£1,378 GBP
View
B
Retailer 7
-
£1,527 GBP
View
B
Retailer 8
-
£1,603 GBP
View
B
Retailer 9
-
£1,612 GBP
View
B
Retailer 10
-
£1,889 GBP
View
Most Expensive
B
Helzberg Diamonds
XZRILMNNJPOMP · Nov 6
£2,047 GBP
$2,740 USD
View
10 more retailers have this diamond
Prices start from £1,142 GBPSave up to £905 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
£1,142 GBP