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Princess|Natural|IGI

1.50ct I SI1 Princess Natural Diamond

EX • I/SI1 • IGI 737543834

Shape and cutting style on the report: Princess cut

Certificate IGI 737543834

Diamond specifications and retailer prices

From £2,282 GBP
$3,057 USD
As of October 31, 2026
Save £2,196 GBP (49%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: £4,478 GBP at NZ Jewellers · As of October 27, 2026
View at NZ Jewellers

About this 1.5ct natural princess diamond

This 1.5ct 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 and certified by IGI 737543834. Listed at 25 retailers as of October 27, 2026, with prices from £2,282 to £4,478, a £2,196 spread on the same certified stone. NZ Jewellers lists it at £4,478. 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

1.50
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.7°
Pavilion angle40.6°
OriginNatural
Grading LabIGI
CertificateIGI 737543834
Dimensions6.28 × 6.24 × 4.47 mm
L/W Ratio1.01
Culet sizePointed
Top View
6.28 mm6.24 mm1.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 737543834
Side View
Table 72.0%Crown 42.7°Girdle: MediumPavilion 40.6°Culet: NoneDepth 71.6%

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: Oct 31
Current: £3,008 GBP|Low: £2,175 GBP|High: £4,351 GBP|Avg: £2,761 GBP|+2.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 8£2,282 GBP
Retailer 9£2,321 GBP
Retailer 10£2,373 GBP
Retailer 12£2,399 GBP
Retailer 2£2,478 GBP
Retailer 3£2,570 GBP
Retailer 11£2,570 GBP
Retailer 5£2,712 GBP
Retailer 4£2,966 GBP
Retailer 1£3,008 GBP
Retailer 7£3,159 GBP
Retailer 6£4,298 GBP

37 data points across 12 retailers

25 retailers£2,282 GBP to £4,478 GBP

A
Cheapest Retailer
-
£2,282 GBP
$3,057 USD
Retailer 2
-
£2,321 GBP
$3,110 USD
View
Price last confirmed 12 days ago
A
Retailer 3
-
£2,373 GBP
$3,179 USD
View
Final sale: no returns
A
Retailer 4
-
£2,399 GBP
$3,215 USD
View
A
Retailer 5
-
£2,478 GBP
$3,320 USD
View
Retailer 6
-
£2,570 GBP
$3,444 USD
View
Price last confirmed 49 days ago
Retailer 7
-
£2,570 GBP
$3,444 USD
View
Price last confirmed 8 days ago
Retailer 8
-
£2,570 GBP
$3,444 USD
View
Price last confirmed 38 days ago
A
Retailer 9
-
£2,570 GBP
$3,444 USD
View
Retailer 10
-
£2,570 GBP
$3,444 USD
View
Price last confirmed 31 days ago
A
Retailer 11
-
£2,570 GBP
$3,444 USD
View
A
Retailer 12
-
£2,669 GBP
$3,576 USD
View
Retailer 13
-
£2,669 GBP
$3,576 USD
View
Price last confirmed 33 days ago
A
Retailer 14
-
£2,678 GBP
$3,588 USD
View
A
Retailer 15
-
£2,712 GBP
View
Retailer 16
-
£2,966 GBP
$3,974 USD
View
Price last confirmed 48 days ago
Retailer 17
-
£2,966 GBP
$3,974 USD
View
Price last confirmed 39 days ago
Retailer 18
-
£2,966 GBP
$3,974 USD
View
Price last confirmed 33 days ago
A
Retailer 19
-
£3,008 GBP
€3,839 EUR
View
A
Retailer 20
-
£3,159 GBP
ZAR 68,387 ZAR
View
B+
Retailer 21
-
£4,298 GBP
View
Retailer 22
-
£4,478 GBP
$6,000 USD
View
Price last confirmed 48 days ago
Retailer 23
-
£4,478 GBP
$6,000 USD
View
Price last confirmed 38 days ago
Retailer 24
-
£4,478 GBP
$6,000 USD
View
Price last confirmed 32 days ago
Most Expensive
B
NZ Jewellers
f1bcd95a-569d-4706-89a4-dd9b3d98dc9e · Oct 27
£4,478 GBP
$6,000 USD
View
24 more retailers have this diamond
Prices start from £2,282 GBPSave up to £2,196 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
1.50ct Princess
£2,282 GBP