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1.53ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG818664973

Shape and cutting style on the report: Round brilliant

Certificate IGI LG818664973

Diamond specifications and retailer prices

From £264 GBP
As of November 6, 2026
Save £581 GBP (69%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £845 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 1.53ct lab-grown round diamond

This 1.53ct lab-grown round sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG818664973 or 818664973. Listed at 6 retailers as of November 5, 2026, with prices from £264 to £845, a £581 spread on the same certified stone. MOH London lists it at £845. 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
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818664973
Dimensions7.42 × 7.39 × 4.51 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.42 mm7.39 mm1.53 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818664973
Side View
Table 59.0%Crown 33.9°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 61.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £845 GBP|Low: £245 GBP|High: £857 GBP|Avg: £492 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 2£264 GBP
Retailer 3£327 GBP
Retailer 6£332 GBP
Retailer 4£561 GBP
Retailer 5£622 GBP
MOH London£845 GBP

40 data points across 6 retailers

6 retailers£264 GBP to £845 GBP

B+
Cheapest Retailer
-
£264 GBP
A
Retailer 2
-
£327 GBP
View
A
Retailer 3
-
£332 GBP
View
B+
Retailer 4
-
£561 GBP
View
B+
Retailer 5
-
£622 GBP
View
Most Expensive
B
MOH London
LG818664973 · Nov 5
£845 GBP
View
5 more retailers have this diamond
Prices start from £264 GBPSave up to £581 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
£264 GBP