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Marquise|Lab Grown|IGI

1.53ct D SI1 Marquise Lab Grown Diamond

EX • D/SI1 • IGI LG838612517

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG838612517

Diamond specifications and retailer prices

From £174 GBP
$233 USD
As of November 1, 2026
Save £819 GBP (82%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £993 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.53ct lab-grown marquise diamond

This 1.53ct lab-grown marquise 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 LG838612517 or 838612517. Listed at 3 retailers as of October 31, 2026, with prices from £174 to £993, a £819 spread on the same certified stone. Brilliant Earth lists it at £993. 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 angle35.4°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG838612517
Dimensions11.47 × 6.01 × 3.88 mm
L/W Ratio1.91
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.47 mm6.01 mm1.53 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG838612517
Side View
Table 57.0%Crown 35.4°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 64.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: £993 GBP|Low: £174 GBP|High: £1,022 GBP|Avg: £618 GBP|-2.9%
Brilliant Earth
Retailer 2
Retailer 3
November 1, 2026
Retailer 3£174 GBP
Retailer 2£368 GBP
Brilliant Earth£993 GBP

34 data points across 3 retailers

3 retailers£174 GBP to £993 GBP

A
Cheapest Retailer
-
£174 GBP
$233 USD
Final sale: no returns
A
Retailer 2
-
£368 GBP
View
Most Expensive
B
Brilliant Earth
21485084A · Oct 31
£993 GBP
$1,330 USD
View
2 more retailers have this diamond
Prices start from £174 GBPSave up to £819 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 Marquise
£174 GBP