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Round|Natural|GIA

1.50ct M SI2 Round Natural Diamond

EX • M/SI2 • GIA 1493259273

Certificate GIA 1493259273

Diamond specifications and retailer prices

From £1,317 GBP
As of November 5, 2026
Save £2,504 GBP (66%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £3,820 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1493259273. Listed at 12 retailers as of November 5, 2026, with prices from £1,317 to £3,820, a £2,504 spread on the same certified stone. NZ Jewellers lists it at £3,820. 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
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1493259273
Dimensions7.35 × 7.38 × 4.45 mm
L/W Ratio1.00
Star length55%
Lower girdle75%
Culet sizeNone
Key to symbols
Crystal, Twinning Wisp, Feather, Cavity, Needle
Top View
7.35 mm7.38 mm1.50 ctM / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 1493259273
Side View
Table 61.0%Crown 35°Girdle: THN-STKPavilion 40.8°Culet: NoneDepth 60.4%

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: £3,820 GBP|Low: £1,198 GBP|High: £3,820 GBP|Avg: £1,781 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 5£1,317 GBP
Retailer 7£1,322 GBP
Retailer 3£1,650 GBP
Retailer 12£1,691 GBP
Retailer 9£1,827 GBP
Retailer 11£1,827 GBP
Retailer 10£1,912 GBP
Retailer 8£1,931 GBP
Retailer 6£2,016 GBP
Retailer 4£2,109 GBP
Retailer 2£2,412 GBP
NZ Jewellers£3,820 GBP

41 data points across 12 retailers

12 retailers£1,317 GBP to £3,820 GBP

A
Cheapest Retailer
-
£1,317 GBP
A
Retailer 2
-
£1,322 GBP
View
B+
Retailer 3
-
£1,650 GBP
View
B+
Retailer 4
-
£1,691 GBP
View
B+
Retailer 5
-
£1,827 GBP
View
Retailer 6
-
£1,827 GBP
View
Price last confirmed 8 days ago
B+
Retailer 7
-
£1,912 GBP
View
B+
Retailer 8
-
£1,931 GBP
View
B+
Retailer 9
-
£2,016 GBP
View
B+
Retailer 10
-
£2,109 GBP
View
B
Retailer 11
-
£2,412 GBP
View
Most Expensive
C
NZ Jewellers
76efc528-bf8a-47eb-9347-ac5303557ee5 · Nov 5
£3,820 GBP
$5,142 USD
View
11 more retailers have this diamond
Prices start from £1,317 GBPSave up to £2,504 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
£1,317 GBP