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Marquise|Lab Grown|IGI

0.53ct H SI1 Marquise Lab Grown Diamond

ID • H/SI1 • IGI LG436045410

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG436045410

Diamond specifications and retailer prices

From £236 GBP
$316 USD
As of October 30, 2026
Save £858 GBP (78%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £1,178 GBP at MOH London · As of October 21, 2026
View at MOH London

About this 0.53ct lab-grown marquise diamond

This 0.53ct lab-grown marquise sits in the half to three-quarter carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG436045410 or 436045410. Listed at 12 retailers as of October 30, 2026, with a 364% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

0.53
Carat
H
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436045410
Dimensions8.85 × 4.10 × 2.54 mm
L/W Ratio2.16
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
8.85 mm4.10 mm0.53 ctH / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG436045410
Side View
Table 60.0%Crown 34.3°Girdle: MED-THKPavilion 41.5°Culet: NoneDepth 62.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £1,178 GBP|Low: £226 GBP|High: £1,187 GBP|Avg: £576 GBP|+0.5%
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
October 25, 2026
Retailer 10£236 GBP
Retailer 3£263 GBP
Retailer 8£266 GBP
Retailer 15£274 GBP
Retailer 11£276 GBP
Retailer 12£293 GBP
Retailer 16£293 GBP
Retailer 5£407 GBP
Retailer 14£475 GBP
Retailer 2£532 GBP
Retailer 6£569 GBP
Retailer 9£858 GBP
Retailer 13£940 GBP
Retailer 4£1,094 GBP
Retailer 7£1,175 GBP
MOH London£1,178 GBP

23 data points across 16 retailers

12 retailers£236 GBP to £1,094 GBP

A
Cheapest Retailer
-
£236 GBP
$316 USD
A
Retailer 2
-
£263 GBP
$353 USD
View
Final sale: no returns
B+
Retailer 3
-
£274 GBP
$367 USD
View
B+
Retailer 4
-
£276 GBP
$370 USD
View
Retailer 5
-
£293 GBP
$392 USD
View
Price last confirmed 7 days ago
B+
Retailer 6
-
£293 GBP
$392 USD
View
B
Retailer 7
-
£475 GBP
$637 USD
View
Retailer 8
-
£532 GBP
€679 EUR
View
Price last confirmed 7 days ago
B
Retailer 9
-
£858 GBP
$1,149 USD
View
B
Retailer 10
-
£940 GBP
$1,260 USD
View
B
Retailer 11
-
£1,094 GBP
$1,465 USD
View
Most Expensive
MOH London
LG436045410 · Oct 21
£1,178 GBP
View
Price last confirmed 11 days ago
11 more retailers have this diamond
Prices start from £236 GBPSave up to £858 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
0.53ct Marquise
£236 GBP