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Princess|Natural|GIA

1.00ct J SI2 Princess Natural Diamond

EX • J/SI2 • GIA 1569717563

Certificate GIA 1569717563

Diamond specifications and retailer prices

From £808 GBP
As of November 4, 2026
Save £640 GBP (44%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £1,448 GBP at Helzberg Diamonds · As of November 6, 2026
View at Helzberg Diamonds

About this 1ct natural princess diamond

This 1ct 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 1569717563. Listed at 9 retailers as of November 4, 2026, with prices from £808 to £1,448, a £640 spread on the same certified stone. Helzberg Diamonds lists it at £1,448. 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

1.00
Carat
J
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle25.69°
Pavilion angle39.78°
OriginNatural
Grading LabGIA
CertificateGIA 1569717563
Dimensions5.40 × 5.39 × 3.94 mm
L/W Ratio1.00
Culet sizeNone
Top View
5.40 mm5.39 mm1.00 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1569717563
Side View
Table 73.0%Crown 25.69°Girdle: STK-THKPavilion 39.78°Culet: NDepth 73.1%

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 4
Current: £1,448 GBP|Low: £808 GBP|High: £1,448 GBP|Avg: £998 GBP
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 5£808 GBP
Retailer 6£850 GBP
Retailer 9£871 GBP
Retailer 8£880 GBP
Retailer 3£905 GBP
Retailer 2£1,162 GBP
Retailer 7£1,177 GBP
Retailer 4£1,349 GBP
Helzberg Diamonds£1,448 GBP

9 data points across 9 retailers

9 retailers£808 GBP to £1,448 GBP

A
Cheapest Retailer
-
£808 GBP
A
Retailer 2
-
£850 GBP
View
A
Retailer 3
-
£871 GBP
View
A
Retailer 4
-
£880 GBP
View
A
Retailer 5
-
£905 GBP
View
B+
Retailer 6
-
£1,162 GBP
View
B+
Retailer 7
-
£1,177 GBP
View
B
Retailer 8
-
£1,349 GBP
View
Most Expensive
B
Helzberg Diamonds
XZRHLMPNHNLMJ · Nov 6
£1,448 GBP
$1,949 USD
View
8 more retailers have this diamond
Prices start from £808 GBPSave up to £640 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
1.00ct Princess
£808 GBP