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Princess|Natural|IGI

1.51ct K SI1 Princess Natural Diamond

VG • K/SI1 • IGI 737544384

Shape and cutting style on the report: Princess cut

Certificate IGI 737544384

Diamond specifications and retailer prices

From £1,567 GBP
As of November 5, 2026
Save £2,059 GBP (57%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £3,626 GBP at NZ Jewellers · As of October 27, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 737544384. Listed at 16 retailers as of November 5, 2026, with a 131% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
K
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle49.7°
Pavilion angle37.4°
OriginNatural
Grading LabIGI
CertificateIGI 737544384
Dimensions6.20 × 6.12 × 4.34 mm
L/W Ratio1.01
Culet sizePointed
Top View
6.20 mm6.12 mm1.51 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 737544384
Side View
Table 69.0%Crown 49.7°Girdle: STK-THKPavilion 37.4°Culet: NoneDepth 70.9%

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 5
Current: £3,626 GBP|Low: £1,567 GBP|High: £3,626 GBP|Avg: £2,092 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 10£1,567 GBP
Retailer 9£1,586 GBP
Retailer 2£1,682 GBP
Retailer 4£1,734 GBP
Retailer 12£1,734 GBP
Retailer 3£1,814 GBP
Retailer 6£1,917 GBP
Retailer 11£2,001 GBP
Retailer 7£2,117 GBP
Retailer 5£2,154 GBP
Retailer 8£3,029 GBP
NZ Jewellers£3,626 GBP

37 data points across 12 retailers

16 retailers£1,567 GBP to £3,626 GBP

A
Cheapest Retailer
-
£1,567 GBP
A
Retailer 2
-
£1,586 GBP
View
A
Retailer 3
-
£1,682 GBP
View
B+
Retailer 4
-
£1,698 GBP
View
Retailer 5
-
£1,734 GBP
View
Price last confirmed 8 days ago
B+
Retailer 6
-
£1,734 GBP
View
B+
Retailer 7
-
£1,735 GBP
View
B+
Retailer 8
-
£1,814 GBP
View
B+
Retailer 9
-
£1,837 GBP
View
B+
Retailer 10
-
£1,917 GBP
View
B+
Retailer 11
-
£2,001 GBP
View
B+
Retailer 12
-
£2,117 GBP
View
B+
Retailer 13
-
£2,154 GBP
View
B
Retailer 14
-
£3,029 GBP
View
B
Retailer 15
-
£3,626 GBP
View
Most Expensive
NZ Jewellers
58a78d14-6b04-45b1-b182-045c2f49b360 · Oct 27
£3,626 GBP
$4,880 USD
View
Price last confirmed 10 days ago
15 more retailers have this diamond
Prices start from £1,567 GBPSave up to £2,059 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
£1,567 GBP