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Round|Natural|GIA

1.50ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 6492040977

Certificate GIA 6492040977

Diamond specifications and retailer prices

From £3,846 GBP
As of November 6, 2026
Save £4,737 GBP (55%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £8,582 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 J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6492040977. Listed at 21 retailers as of November 5, 2026, with prices from £3,846 to £8,582, a £4,737 spread on the same certified stone. NZ Jewellers lists it at £8,582. 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
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6492040977
Dimensions7.36 × 7.31 × 4.47 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
7.36 mm7.31 mm1.50 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6492040977
Side View
Table 60.0%Crown 34.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 60.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £8,582 GBP|Low: £3,576 GBP|High: £8,582 GBP|Avg: £5,303 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£3,846 GBP
Retailer 7£3,908 GBP
Retailer 8£4,292 GBP
Retailer 3£4,649 GBP
Retailer 9£4,649 GBP
Retailer 12£4,649 GBP
Retailer 2£4,841 GBP
Retailer 5£5,272 GBP
Retailer 11£5,364 GBP
Retailer 4£5,656 GBP
Retailer 6£7,540 GBP
NZ Jewellers£8,582 GBP

42 data points across 12 retailers

21 retailers£3,846 GBP to £8,582 GBP

B+
Cheapest Retailer
-
£3,846 GBP
B+
Retailer 2
-
£3,908 GBP
View
B
Retailer 3
-
£3,941 GBP
View
B+
Retailer 4
-
£4,054 GBP
View
B+
Retailer 5
-
£4,213 GBP
View
B
Retailer 6
-
£4,292 GBP
View
Final sale: no returns
B
Retailer 7
-
£4,294 GBP
View
B
Retailer 8
-
£4,327 GBP
View
B
Retailer 9
-
£4,649 GBP
View
Retailer 10
-
£4,649 GBP
View
Price last confirmed 8 days ago
B
Retailer 11
-
£4,649 GBP
View
B
Retailer 12
-
£4,841 GBP
View
B
Retailer 13
-
£4,903 GBP
View
B
Retailer 14
-
£5,171 GBP
View
B
Retailer 15
-
£5,171 GBP
View
B
Retailer 16
-
£5,272 GBP
View
B
Retailer 17
-
£5,350 GBP
View
B
Retailer 18
-
£5,364 GBP
View
Retailer 19
-
£5,656 GBP
View
Price last confirmed 14 days ago
B
Retailer 20
-
£7,540 GBP
View
Most Expensive
B
NZ Jewellers
685f6d57-6f08-4fdb-9fdc-7553c50ef302 · Nov 5
£8,582 GBP
$11,551 USD
View
20 more retailers have this diamond
Prices start from £3,846 GBPSave up to £4,737 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.

B+
1.50ct Round
£3,846 GBP