CaratHunter
Plans
Round|Natural|GIA

1.50ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 2537064163

Certificate GIA 2537064163

Diamond specifications and retailer prices

From £3,978 GBP
As of November 1, 2026
Save £4,915 GBP (55%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: £8,894 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.5ct natural round diamond

This 1.5ct natural round 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 GIA 2537064163. Listed at 27 retailers as of November 1, 2026, with prices from £3,978 to £8,894, a £4,915 spread on the same certified stone. NZ Jewellers lists it at £8,894. 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 angle32°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 2537064163
Dimensions7.33 × 7.39 × 4.50 mm
L/W Ratio1.01
Star length50%
Top View
7.33 mm7.39 mm1.50 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2537064163
Side View
Table 57.0%Crown 32°Girdle: Medium to Slightly ThickPavilion 41.4°Culet: NoneDepth 61.2%

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: £8,894 GBP|Low: £3,978 GBP|High: £8,894 GBP|Avg: £5,146 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
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
Retailer 24
Retailer 25
Retailer 26
Retailer 27
November 6, 2026
Retailer 4£3,978 GBP
Retailer 7£4,030 GBP
Retailer 8£4,084 GBP
Retailer 14£4,202 GBP
Retailer 26£4,205 GBP
Retailer 9£4,257 GBP
Retailer 15£4,446 GBP
Retailer 3£4,475 GBP
Retailer 20£4,599 GBP
Retailer 17£4,708 GBP
Retailer 10£4,743 GBP
Retailer 5£4,817 GBP
Retailer 6£4,817 GBP
Retailer 11£4,817 GBP
Retailer 18£4,906 GBP
Retailer 25£4,906 GBP
Retailer 13£5,015 GBP
Retailer 27£5,161 GBP
Retailer 19£5,252 GBP
Retailer 2£5,439 GBP
Retailer 16£5,439 GBP
Retailer 12£5,558 GBP
Retailer 21£5,649 GBP
Retailer 22£6,488 GBP
Retailer 24£7,709 GBP
Retailer 23£7,813 GBP
NZ Jewellers£8,894 GBP

31 data points across 27 retailers

27 retailers£3,978 GBP to £8,894 GBP

A
Cheapest Retailer
-
£3,978 GBP
A
Retailer 2
-
£4,030 GBP
View
A
Retailer 3
-
£4,084 GBP
View
B+
Retailer 4
-
£4,202 GBP
View
B+
Retailer 5
-
£4,205 GBP
View
B+
Retailer 6
-
£4,257 GBP
View
B+
Retailer 7
-
£4,446 GBP
View
Final sale: no returns
B+
Retailer 8
-
£4,475 GBP
View
B+
Retailer 9
-
£4,599 GBP
View
B+
Retailer 10
-
£4,708 GBP
View
B+
Retailer 11
-
£4,743 GBP
View
Retailer 12
-
£4,817 GBP
View
Price last confirmed 8 days ago
B+
Retailer 13
-
£4,817 GBP
View
B+
Retailer 14
-
£4,817 GBP
View
Retailer 15
-
£4,906 GBP
View
Price last confirmed 22 days ago
B+
Retailer 16
-
£4,906 GBP
View
B+
Retailer 17
-
£5,015 GBP
View
Retailer 18
-
£5,161 GBP
View
Price last confirmed 15 days ago
B
Retailer 19
-
£5,252 GBP
View
B+
Retailer 20
-
£5,439 GBP
View
B
Retailer 21
-
£5,439 GBP
View
B
Retailer 22
-
£5,558 GBP
View
B+
Retailer 23
-
£5,649 GBP
View
B
Retailer 24
-
£6,488 GBP
View
B
Retailer 25
-
£7,709 GBP
View
B
Retailer 26
-
£7,813 GBP
View
Most Expensive
B
NZ Jewellers
7b07b6b6-6dda-4fb1-b157-9c3c62e51643 · Nov 5
£8,894 GBP
$11,904 USD
View
26 more retailers have this diamond
Prices start from £3,978 GBPSave up to £4,915 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 Round
£3,978 GBP