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1.50ct M SI1 Round Natural Diamond

EX • M/SI1 • GIA 6495882185

Shape and cutting style on the report: Round brilliant

Certificate GIA 6495882185

Diamond specifications and retailer prices

From £1,547 GBP
As of November 5, 2026
Save £2,921 GBP (65%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £4,468 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 M colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6495882185. Listed at 14 retailers as of November 5, 2026, with prices from £1,547 to £4,468, a £2,921 spread on the same certified stone. NZ Jewellers lists it at £4,468. 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
M
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6495882185
Dimensions7.27 × 7.31 × 4.56 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
7.27 mm7.31 mm1.50 ctM / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6495882185
Side View
Table 57.0%Crown 35.5°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 62.6%

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: Nov 5
Current: £2,327 GBP|Low: £1,540 GBP|High: £2,626 GBP|Avg: £2,044 GBP|-1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 3£1,547 GBP
Retailer 5£1,550 GBP
Retailer 7£1,914 GBP
Retailer 6£1,950 GBP
Retailer 8£2,092 GBP
Retailer 9£2,219 GBP
Retailer 1£2,327 GBP
Retailer 4£2,378 GBP
Retailer 2£2,609 GBP

43 data points across 9 retailers

14 retailers£1,547 GBP to £4,468 GBP

A
Cheapest Retailer
-
£1,547 GBP
A
Retailer 2
-
£1,550 GBP
View
B+
Retailer 3
-
£1,914 GBP
View
B+
Retailer 4
-
£1,950 GBP
View
B+
Retailer 5
-
£2,092 GBP
View
Retailer 6
-
£2,137 GBP
View
Price last confirmed 8 days ago
B+
Retailer 7
-
£2,137 GBP
View
B+
Retailer 8
-
£2,219 GBP
View
B+
Retailer 9
-
£2,242 GBP
View
B+
Retailer 10
-
£2,327 GBP
View
B+
Retailer 11
-
£2,378 GBP
View
B+
Retailer 12
-
£2,466 GBP
View
B+
Retailer 13
-
£2,609 GBP
View
Most Expensive
C
NZ Jewellers
983b77ee-52e9-4347-ae7c-1baa9bfd1310 · Nov 5
£4,468 GBP
$6,014 USD
View
13 more retailers have this diamond
Prices start from £1,547 GBPSave up to £2,921 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
£1,547 GBP