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Marquise|Lab Grown|IGI

0.50ct E SI1 Marquise Lab Grown Diamond

ID • E/SI1 • IGI LG538276900

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG538276900

Diamond specifications and retailer prices

From £218 GBP
$290 USD
As of October 28, 2026
2 retailers carry this diamond
Most expensive: £240 GBP at Ting Diamond · As of September 4, 2026
View at Ting Diamond

About this 0.5ct lab-grown marquise diamond

This 0.5ct lab-grown marquise sits in the half to three-quarter carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG538276900 or 538276900. Listed at 2 retailers as of October 28, 2026. 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

0.50
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle37.9°
Pavilion angle39.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG538276900
Dimensions8.46 × 4.01 × 2.48 mm
L/W Ratio2.11
Girdle conditionFaceted
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
8.46 mm4.01 mm0.50 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG538276900
Side View
Table 63.0%Crown 37.9°Girdle: STK-THKPavilion 39.1°Culet: NoneDepth 61.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: £221 GBP|Low: £73 GBP|High: £711 GBP|Avg: £324 GBP|-4.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
September 10, 2026
Retailer 6£73 GBP
Retailer 4£201 GBP
Retailer 2£218 GBP
Retailer 1£221 GBP
Retailer 3£279 GBP
Retailer 5£284 GBP
Retailer 7£368 GBP
Retailer 8£711 GBP

79 data points across 8 retailers

2 retailers

B+
Cheapest Retailer
-
£218 GBP
$290 USD
Most Expensive
Ting Diamond
7039212 · Sep 4
£240 GBP
HK$2,500 HKD
View
Price last confirmed 55 days ago
1 more retailer has this diamond
Prices start from £218 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.

B+
0.50ct Marquise
£218 GBP