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Princess|Natural|GIA

1.31ct I SI2 Princess Natural Diamond

EX • I/SI2 • GIA 5513423943

Certificate GIA 5513423943

Diamond specifications and retailer prices

From £1,402 GBP
As of November 1, 2026
Save £2,057 GBP (59%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £3,458 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.31ct natural princess diamond

This 1.31ct natural princess sits in the one-and-a-quarter to one-and-a-half carat band, graded I 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 5513423943. Listed at 6 retailers as of October 30, 2026, with prices from £1,402 to £3,458, a £2,057 spread on the same certified stone. NZ Jewellers lists it at £3,458. 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

1.31
Carat
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.91°
Pavilion angle39.7°
OriginNatural
Grading LabGIA
CertificateGIA 5513423943
Dimensions5.91 × 5.90 × 4.33 mm
L/W Ratio1.00
Top View
5.91 mm5.90 mm1.31 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5513423943
Side View
Table 73.0%Crown 43.91°Girdle: STK-THKPavilion 39.7°Culet: NoneDepth 73.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £3,458 GBP|Low: £1,401 GBP|High: £3,458 GBP|Avg: £1,897 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 2£1,402 GBP
Retailer 5£1,418 GBP
Retailer 4£1,483 GBP
Retailer 6£1,517 GBP
Retailer 7£1,624 GBP
Retailer 9£1,628 GBP
Retailer 8£1,809 GBP
Retailer 3£2,484 GBP
NZ Jewellers£3,458 GBP

29 data points across 9 retailers

6 retailers£1,402 GBP to £3,458 GBP

A
Cheapest Retailer
-
£1,402 GBP
A
Retailer 2
-
£1,418 GBP
$1,900 USD
View
A
Retailer 3
-
£1,483 GBP
$1,987 USD
View
A
Retailer 4
-
£1,517 GBP
$2,032 USD
View
B+
Retailer 5
-
£2,484 GBP
View
Most Expensive
B
NZ Jewellers
76fa4d29-d926-466f-9e16-570a448cd710 · Oct 30
£3,458 GBP
$4,634 USD
View
5 more retailers have this diamond
Prices start from £1,402 GBPSave up to £2,057 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
1.31ct Princess
£1,402 GBP