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Marquise|Lab Grown|IGI

0.50ct I SI1 Marquise Lab Grown Diamond

ID • I/SI1 • IGI LG436047412

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG436047412

Diamond specifications and retailer prices

From €241 EUR
$270 USD
As of November 2, 2026
Save €954 EUR (80%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: €1,195 EUR at MOH London · As of November 1, 2026
View at MOH London

About this 0.5ct lab-grown marquise diamond

This 0.5ct lab-grown marquise sits in the half to three-quarter carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG436047412 or 436047412. Listed at 11 retailers as of November 1, 2026, with prices from €241 to €1,195, a €954 spread on the same certified stone. MOH London lists it at €1,195. 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
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle34.2°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436047412
Dimensions7.74 × 4.15 × 2.62 mm
L/W Ratio1.87
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.74 mm4.15 mm0.50 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG436047412
Side View
Table 56.0%Crown 34.2°Girdle: MED-THKPavilion 41.4°Culet: NoneDepth 63.1%

Caratlytics Score

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

Price History

Last verified: Nov 2
Current: €1,195 EUR|Low: €231 EUR|High: €1,209 EUR|Avg: €577 EUR|-1.0%
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
November 1, 2026
Retailer 8€241 EUR
Retailer 3€268 EUR
Retailer 13€279 EUR
Retailer 10€298 EUR
Retailer 14€298 EUR
Retailer 9€312 EUR
Retailer 4€441 EUR
Retailer 12€495 EUR
Retailer 2€556 EUR
Retailer 5€611 EUR
Retailer 7€916 EUR
Retailer 11€958 EUR
MOH London€1,195 EUR
Retailer 6€1,198 EUR

21 data points across 14 retailers

11 retailers€241 EUR to €1,195 EUR

A
Cheapest Retailer
-
€241 EUR
$270 USD
A
Retailer 2
-
€268 EUR
$301 USD
View
Final sale: no returns
B+
Retailer 3
-
€279 EUR
$313 USD
View
B+
Retailer 4
-
€298 EUR
$334 USD
View
Retailer 5
-
€298 EUR
$334 USD
View
Price last confirmed 8 days ago
B+
Retailer 6
-
€312 EUR
$350 USD
View
B
Retailer 7
-
€495 EUR
$555 USD
View
Retailer 8
-
€556 EUR
View
Price last confirmed 8 days ago
B
Retailer 9
-
€916 EUR
$1,027 USD
View
B
Retailer 10
-
€958 EUR
$1,075 USD
View
Most Expensive
B
MOH London
LG436047412 · Nov 1
€1,195 EUR
£1,055 GBP
View
10 more retailers have this diamond
Prices start from €241 EURSave up to €954 EUR

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
0.50ct Marquise
€241 EUR