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Princess|Natural|GIA

1.01ct J SI1 Princess Natural Diamond

EX • J/SI1 • GIA 5242058974

Certificate GIA 5242058974

Diamond specifications and retailer prices

From £915 GBP
$1,226 USD
As of November 1, 2026
Save £735 GBP (45%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £1,650 GBP at Helzberg Diamonds · As of November 2, 2026
View at Helzberg Diamonds

About this 1.01ct natural princess diamond

This 1.01ct natural princess sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5242058974. Listed at 16 retailers as of November 1, 2026, with prices from £915 to £1,650, a £735 spread on the same certified stone. Helzberg Diamonds lists it at £1,650. 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

1.01
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle29.9°
Pavilion angle38.88°
OriginNatural
Grading LabGIA
CertificateGIA 5242058974
Dimensions5.37 × 5.34 × 3.92 mm
L/W Ratio1.01
Culet sizeNone
Top View
5.37 mm5.34 mm1.01 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5242058974
Side View
Table 73.0%Crown 29.9°Girdle: THN-STKPavilion 38.88°Culet: NoneDepth 73.4%

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: Nov 1
Current: £1,650 GBP|Low: £915 GBP|High: £1,650 GBP|Avg: £1,155 GBP
Helzberg Diamonds
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
Retailer 16
November 2, 2026
Retailer 13£915 GBP
Retailer 12£921 GBP
Retailer 5£921 GBP
Retailer 14£936 GBP
Retailer 15£952 GBP
Retailer 16£987 GBP
Retailer 8£1,004 GBP
Retailer 9£1,037 GBP
Retailer 7£1,045 GBP
Retailer 3£1,125 GBP
Retailer 4£1,296 GBP
Retailer 10£1,299 GBP
Retailer 2£1,322 GBP
Retailer 6£1,375 GBP
Retailer 11£1,539 GBP
Helzberg Diamonds£1,650 GBP

38 data points across 16 retailers

16 retailers£915 GBP to £1,650 GBP

A
Cheapest Retailer
-
£915 GBP
$1,226 USD
A
Retailer 2
-
£921 GBP
SGD 1,667 SGD
View
A
Retailer 3
-
£921 GBP
$1,234 USD
View
A
Retailer 4
-
£936 GBP
$1,254 USD
View
A
Retailer 5
-
£952 GBP
$1,275 USD
View
A
Retailer 6
-
£987 GBP
$1,323 USD
View
B+
Retailer 7
-
£1,004 GBP
SGD 1,817 SGD
View
B+
Retailer 8
-
£1,037 GBP
View
B+
Retailer 9
-
£1,045 GBP
$1,400 USD
View
B+
Retailer 10
-
£1,125 GBP
$1,507 USD
View
B
Retailer 11
-
£1,296 GBP
$1,736 USD
View
B
Retailer 12
-
£1,299 GBP
$1,741 USD
View
B+
Retailer 13
-
£1,322 GBP
€1,687 EUR
View
B
Retailer 14
-
£1,403 GBP
$1,880 USD
View
B
Retailer 15
-
£1,539 GBP
$2,062 USD
View
Most Expensive
B
Helzberg Diamonds
XZRLIKIGLOPNK · Nov 2
£1,650 GBP
$2,211 USD
View
15 more retailers have this diamond
Prices start from £915 GBPSave up to £735 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
1.01ct Princess
£915 GBP