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Round|Natural|GIA

1.50ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 2557356180

Certificate GIA 2557356180

Diamond specifications and retailer prices

From £2,339 GBP
As of November 6, 2026
Save £3,250 GBP (58%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £5,589 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 H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2557356180. Listed at 7 retailers as of November 5, 2026, with prices from £2,339 to £5,589, a £3,250 spread on the same certified stone. NZ Jewellers lists it at £5,589. 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
H
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2557356180
Dimensions7.24 × 7.28 × 4.50 mm
L/W Ratio1.01
Key to symbols
Feather, Crystal, Needle, Pinpoint
Top View
7.24 mm7.28 mm1.50 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557356180
Side View
Table 58.0%CrownGirdle: Slightly ThickPavilion 40.6°Culet: NoneDepth 62.0%

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 6
Current: £5,589 GBP|Low: £2,339 GBP|High: £5,974 GBP|Avg: £3,872 GBP|-6.5%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 2£2,339 GBP
Retailer 3£2,949 GBP
Retailer 6£3,207 GBP
Retailer 7£3,207 GBP
Retailer 4£3,634 GBP
Retailer 5£5,095 GBP
NZ Jewellers£5,589 GBP

33 data points across 7 retailers

7 retailers£2,339 GBP to £5,589 GBP

A
Cheapest Retailer
-
£2,339 GBP
A
Retailer 2
-
£2,949 GBP
View
A
Retailer 3
-
£3,207 GBP
View
A
Retailer 4
-
£3,207 GBP
View
A
Retailer 5
-
£3,634 GBP
View
B+
Retailer 6
-
£5,095 GBP
View
Most Expensive
B
NZ Jewellers
790f15a6-c248-4e9e-9255-f1ed77dfcb14 · Nov 5
£5,589 GBP
$7,522 USD
View
6 more retailers have this diamond
Prices start from £2,339 GBPSave up to £3,250 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
£2,339 GBP