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Round|Lab Grown|IGI

1.53ct D SI1 Round Lab Grown Diamond

EX • D/SI1 • IGI LG685556706

Shape and cutting style on the report: Round brilliant

Certificate IGI LG685556706

Diamond specifications and retailer prices

From £165 GBP
As of November 5, 2026
Save £653 GBP (80%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £818 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 LG685556706 or 685556706. Listed at 15 retailers as of November 5, 2026, with prices from £165 to £818, a £653 spread on the same certified stone. MOH London lists it at £818. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.8°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG685556706
Dimensions7.47 × 7.44 × 4.49 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.47 mm7.44 mm1.53 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG685556706
Side View
Table 61.0%Crown 33.8°Girdle: MediumPavilion 41.3°Culet: NoneDepth 60.3%

Caratlytics Score

How it works →
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 5
Current: £818 GBP|Low: £158 GBP|High: £829 GBP|Avg: £385 GBP|-1.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 8£165 GBP
Retailer 9£204 GBP
Retailer 7£276 GBP
Retailer 3£317 GBP
Retailer 5£331 GBP
Retailer 2£376 GBP
Retailer 4£572 GBP
Retailer 6£660 GBP
MOH London£818 GBP

41 data points across 9 retailers

15 retailers£165 GBP to £818 GBP

A
Cheapest Retailer
-
£165 GBP
A
Retailer 2
-
£192 GBP
View
Retailer 3
-
£204 GBP
View
Price last confirmed 12 days ago
A
Retailer 4
-
£204 GBP
View
B+
Retailer 5
-
£276 GBP
View
A
Retailer 6
-
£317 GBP
View
A
Retailer 7
-
£331 GBP
View
A
Retailer 8
-
£339 GBP
View
A
Retailer 9
-
£376 GBP
View
B+
Retailer 10
-
£394 GBP
View
B
Retailer 11
-
£572 GBP
View
B
Retailer 12
-
£658 GBP
View
B
Retailer 13
-
£660 GBP
View
B
Retailer 14
-
£696 GBP
View
Most Expensive
B
MOH London
LG685556706 · Nov 5
£818 GBP
View
14 more retailers have this diamond
Prices start from £165 GBPSave up to £653 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
£165 GBP