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Round|Lab Grown|IGI

1.53ct D SI1 Round Lab Grown Diamond

EX • D/SI1 • IGI LG747578077

Shape and cutting style on the report: Round brilliant

Certificate IGI LG747578077

Diamond specifications and retailer prices

From £158 GBP
As of November 1, 2026
Save £1,038 GBP (87%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £1,196 GBP at Brilliant Earth · As of November 5, 2026
View at Brilliant Earth

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 LG747578077 or 747578077. Listed at 19 retailers as of November 1, 2026, with prices from £158 to £1,196, a £1,038 spread on the same certified stone. Brilliant Earth lists it at £1,196. 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 angle36.4°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG747578077
Dimensions7.39 × 7.33 × 4.53 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
7.39 mm7.33 mm1.53 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG747578077
Side View
Table 58.0%Crown 36.4°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 61.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: £788 GBP|Low: £152 GBP|High: £1,196 GBP|Avg: £438 GBP|-4.5%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 6, 2026
Retailer 13£158 GBP
Retailer 3£196 GBP
Retailer 14£196 GBP
Retailer 2£236 GBP
Retailer 8£314 GBP
Retailer 6£337 GBP
Retailer 11£357 GBP
Retailer 10£385 GBP
Retailer 5£386 GBP
Retailer 7£564 GBP
Retailer 9£568 GBP
Retailer 4£631 GBP
Brilliant Earth£788 GBP
Retailer 12£791 GBP

44 data points across 14 retailers

19 retailers£158 GBP to £1,196 GBP

Retailer 1
-
£158 GBP
Price last confirmed 44 days ago
A
Retailer 2
-
£158 GBP
View
Retailer 3
-
£184 GBP
View
Price last confirmed 45 days ago
Retailer 4
-
£194 GBP
View
Price last confirmed 42 days ago
A
Retailer 5
-
£196 GBP
View
Retailer 6
-
£196 GBP
View
Price last confirmed 12 days ago
B+
Retailer 7
-
£236 GBP
View
A
Retailer 8
-
£314 GBP
View
A
Retailer 9
-
£337 GBP
View
B+
Retailer 10
-
£357 GBP
View
B+
Retailer 11
-
£385 GBP
View
B+
Retailer 12
-
£386 GBP
View
B+
Retailer 13
-
£515 GBP
View
B+
Retailer 14
-
£564 GBP
View
B
Retailer 15
-
£568 GBP
View
B
Retailer 16
-
£631 GBP
View
B
Retailer 17
-
£788 GBP
View
Retailer 18
-
£791 GBP
View
Price last confirmed 8 days ago
Most Expensive
B
Brilliant Earth
21116661A · Nov 5
£1,196 GBP
$1,610 USD
View
18 more retailers have this diamond
Prices start from £158 GBPSave up to £1,038 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
£158 GBP