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Round|Natural|GIA

1.53ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 1559434372

Certificate GIA 1559434372

Diamond specifications and retailer prices

From £3,157 GBP
As of November 4, 2026
Save £3,246 GBP (51%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £6,403 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 1.53ct natural round diamond

This 1.53ct 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 1559434372. Listed at 7 retailers as of November 2, 2026, with prices from £3,157 to £6,403, a £3,246 spread on the same certified stone. MOH London lists it at £6,403. 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

1.53
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 1559434372
Dimensions7.34 × 7.38 × 4.50 mm
L/W Ratio1.01
Key to symbols
Cloud, Crystal, Feather, Needle
Top View
7.34 mm7.38 mm1.53 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1559434372
Side View
Table 59.0%CrownGirdle: Slightly ThickPavilion 40.6°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 4
Current: £6,403 GBP|Low: £3,157 GBP|High: £6,754 GBP|Avg: £4,408 GBP|-5.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 5£3,157 GBP
Retailer 4£3,569 GBP
Retailer 6£3,765 GBP
Retailer 7£4,146 GBP
Retailer 2£4,399 GBP
Retailer 3£4,631 GBP
MOH London£6,403 GBP

38 data points across 7 retailers

7 retailers£3,157 GBP to £6,403 GBP

A
Cheapest Retailer
-
£3,157 GBP
A
Retailer 2
-
£3,569 GBP
View
A
Retailer 3
-
£3,765 GBP
View
Retailer 4
-
£4,146 GBP
View
Price last confirmed 22 days ago
B+
Retailer 5
-
£4,399 GBP
View
B+
Retailer 6
-
£4,631 GBP
View
Most Expensive
B
MOH London
E45123A58 · Nov 2
£6,403 GBP
View
6 more retailers have this diamond
Prices start from £3,157 GBPSave up to £3,246 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
1.53ct Round
£3,157 GBP