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Princess|Natural|GIA

1.51ct I SI1 Princess Natural Diamond

EX • I/SI1 • GIA 6522970143

Certificate GIA 6522970143

Diamond specifications and retailer prices

From £3,298 GBP
As of November 5, 2026
Save £3,764 GBP (53%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £7,062 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.51ct natural princess diamond

This 1.51ct natural princess sits in the one-and-a-half to two carat band, graded I 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 6522970143. Listed at 20 retailers as of November 5, 2026, with prices from £3,298 to £7,062, a £3,764 spread on the same certified stone. NZ Jewellers lists it at £7,062. 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

1.51
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle23.6°
Pavilion angle39.98°
OriginNatural
Grading LabGIA
CertificateGIA 6522970143
Dimensions6.29 × 6.28 × 4.51 mm
L/W Ratio1.00
Top View
6.29 mm6.28 mm1.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6522970143
Side View
Table 74.0%Crown 23.6°Girdle: STK-THKPavilion 39.98°Culet: NoneDepth 71.8%

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 5
Current: £3,496 GBP|Low: £3,059 GBP|High: £6,805 GBP|Avg: £4,468 GBP|+8.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 2£3,336 GBP
Retailer 1£3,496 GBP
Retailer 10£3,593 GBP
Retailer 3£3,825 GBP
Retailer 5£4,078 GBP
Retailer 11£4,245 GBP
Retailer 7£4,371 GBP
Retailer 9£4,659 GBP
Retailer 4£4,705 GBP
Retailer 6£5,151 GBP
Retailer 8£6,707 GBP

46 data points across 11 retailers

20 retailers£3,298 GBP to £7,062 GBP

A
Cheapest Retailer
-
£3,298 GBP
A
Retailer 2
-
£3,336 GBP
View
B+
Retailer 3
-
£3,480 GBP
View
B+
Retailer 4
-
£3,496 GBP
View
Final sale: no returns
B+
Retailer 5
-
£3,593 GBP
View
B+
Retailer 6
-
£3,594 GBP
View
B+
Retailer 7
-
£3,787 GBP
View
Retailer 8
-
£3,825 GBP
View
Price last confirmed 8 days ago
B+
Retailer 9
-
£3,825 GBP
View
B+
Retailer 10
-
£3,825 GBP
View
B+
Retailer 11
-
£3,928 GBP
View
B+
Retailer 12
-
£4,078 GBP
View
B+
Retailer 13
-
£4,193 GBP
View
Retailer 14
-
£4,245 GBP
View
Price last confirmed 19 days ago
B+
Retailer 15
-
£4,371 GBP
View
B
Retailer 16
-
£4,677 GBP
View
B+
Retailer 17
-
£4,705 GBP
View
B+
Retailer 18
-
£5,151 GBP
View
B
Retailer 19
-
£6,707 GBP
View
Most Expensive
B
NZ Jewellers
5274aeab-c718-48bf-9f4e-8a8ecabfa146 · Nov 5
£7,062 GBP
$9,453 USD
View
19 more retailers have this diamond
Prices start from £3,298 GBPSave up to £3,764 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
1.51ct Princess
£3,298 GBP