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Radiant|Lab Grown|IGI

1.49ct D SI1 Radiant Lab Grown Diamond

ID • D/SI1 • IGI LG537223370

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

Certificate IGI LG537223370

Diamond specifications and retailer prices

From £144 GBP
$193 USD
As of October 30, 2026
Save £689 GBP (83%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £833 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 1.49ct lab-grown radiant diamond

This 1.49ct lab-grown radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG537223370 or 537223370. Listed at 17 retailers as of October 30, 2026, with prices from £144 to £833, a £689 spread on the same certified stone. MOH London lists it at £833. 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

1.49
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.3°
Pavilion angle36.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG537223370
Dimensions8.05 × 5.77 × 3.86 mm
L/W Ratio1.40
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
8.05 mm5.77 mm1.49 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG537223370
Side View
Table 70.0%Crown 39.3°Girdle: Slightly ThickPavilion 36.6°Culet: NoneDepth 66.9%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: £833 GBP|Low: £143 GBP|High: £1,291 GBP|Avg: £454 GBP|-4.4%
MOH London
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
Retailer 16
November 1, 2026
Retailer 4£144 GBP
Retailer 5£161 GBP
Retailer 16£166 GBP
Retailer 12£178 GBP
Retailer 2£213 GBP
Retailer 15£240 GBP
Retailer 9£325 GBP
Retailer 7£337 GBP
Retailer 13£370 GBP
Retailer 3£474 GBP
Retailer 14£573 GBP
Retailer 10£575 GBP
Retailer 6£613 GBP
Retailer 8£713 GBP
Retailer 11£813 GBP
MOH London£833 GBP

36 data points across 16 retailers

17 retailers£144 GBP to £833 GBP

A
Cheapest Retailer
-
£144 GBP
$193 USD
A
Retailer 2
-
£161 GBP
$216 USD
View
Final sale: no returns
A
Retailer 3
-
£166 GBP
$223 USD
View
A
Retailer 4
-
£178 GBP
$239 USD
View
Retailer 5
-
£184 GBP
$247 USD
View
Price last confirmed 7 days ago
A
Retailer 6
-
£213 GBP
View
B+
Retailer 7
-
£240 GBP
$322 USD
View
A
Retailer 8
-
£325 GBP
View
A
Retailer 9
-
£337 GBP
€430 EUR
View
B+
Retailer 10
-
£370 GBP
$496 USD
View
B+
Retailer 11
-
£474 GBP
$635 USD
View
B
Retailer 12
-
£573 GBP
$768 USD
View
B+
Retailer 13
-
£575 GBP
$770 USD
View
B
Retailer 14
-
£613 GBP
$821 USD
View
Retailer 15
-
£713 GBP
$955 USD
View
Price last confirmed 11 days ago
B
Retailer 16
-
£813 GBP
$1,090 USD
View
Most Expensive
B
MOH London
LG537223370 · Nov 1
£833 GBP
View
16 more retailers have this diamond
Prices start from £144 GBPSave up to £689 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
1.49ct Radiant
£144 GBP