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Radiant|Lab Grown|IGI

1.53ct E SI1 Radiant Lab Grown Diamond

EX • E/SI1 • IGI LG630449047

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG630449047

Diamond specifications and retailer prices

From £128 GBP
As of November 4, 2026
Save £702 GBP (85%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £829 GBP at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.53ct lab-grown radiant diamond

This 1.53ct lab-grown radiant sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG630449047 or 630449047. Listed at 16 retailers as of November 4, 2026, with prices from £128 to £829, a £702 spread on the same certified stone. Brilliant Earth lists it at £829. 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
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle35.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG630449047
Dimensions8.15 × 5.69 × 3.82 mm
L/W Ratio1.43
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
8.15 mm5.69 mm1.53 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG630449047
Side View
Table 66.0%Crown 35°Girdle: MediumPavilion 35.3°Culet: NoneDepth 67.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: £829 GBP|Low: £128 GBP|High: £964 GBP|Avg: £396 GBP|-14.0%
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
Retailer 15
November 5, 2026
Retailer 9£128 GBP
Retailer 4£149 GBP
Retailer 5£157 GBP
Retailer 13£159 GBP
Retailer 15£204 GBP
Retailer 2£280 GBP
Retailer 3£283 GBP
Retailer 12£285 GBP
Retailer 7£339 GBP
Retailer 6£410 GBP
Retailer 11£510 GBP
Retailer 8£538 GBP
Retailer 14£539 GBP
Retailer 10£743 GBP
Brilliant Earth£829 GBP

39 data points across 15 retailers

16 retailers£128 GBP to £829 GBP

A
Cheapest Retailer
-
£128 GBP
Retailer 2
-
£149 GBP
View
Price last confirmed 41 days ago
Retailer 3
-
£157 GBP
View
Price last confirmed 41 days ago
Retailer 4
-
£159 GBP
View
Price last confirmed 26 days ago
Retailer 5
-
£159 GBP
View
Price last confirmed 13 days ago
A
Retailer 6
-
£280 GBP
View
B+
Retailer 7
-
£283 GBP
View
A
Retailer 8
-
£285 GBP
View
A
Retailer 9
-
£339 GBP
View
B+
Retailer 10
-
£410 GBP
View
B+
Retailer 11
-
£510 GBP
View
B
Retailer 12
-
£538 GBP
View
B
Retailer 13
-
£539 GBP
View
B+
Retailer 14
-
£557 GBP
View
B
Retailer 15
-
£743 GBP
View
Most Expensive
B
Brilliant Earth
10975666A · Nov 4
£829 GBP
$1,110 USD
View
15 more retailers have this diamond
Prices start from £128 GBPSave up to £702 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 Radiant
£128 GBP