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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 $270 USD
As of October 30, 2026
Save $1,076 USD (80%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,346 USD at MOH London · As of October 29, 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 October 29, 2026, with prices from $270 to $1,346, a $1,076 spread on the same certified stone. MOH London lists it at $1,346. 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
Color
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: Oct 30
Current: $1,346 USD|Low: $259 USD|High: $1,356 USD|Avg: $647 USD|-0.6%
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
October 25, 2026
Retailer 8$270 USD
Retailer 3$301 USD
Retailer 13$313 USD
Retailer 10$334 USD
Retailer 14$334 USD
Retailer 9$350 USD
Retailer 4$495 USD
Retailer 12$555 USD
Retailer 2$624 USD
Retailer 5$685 USD
Retailer 7$1,027 USD
Retailer 11$1,075 USD
Retailer 6$1,344 USD
MOH London$1,346 USD

20 data points across 14 retailers

11 retailers$270 USD to $1,346 USD

A
Cheapest Retailer
-
$270 USD
A
Retailer 2
-
$301 USD
View
Final sale: no returns
B+
Retailer 3
-
$313 USD
View
B+
Retailer 4
-
$334 USD
View
B+
Retailer 5
-
$334 USD
View
B+
Retailer 6
-
$350 USD
View
B
Retailer 7
-
$555 USD
View
B
Retailer 8
-
$624 USD
€594 EUR
View
B
Retailer 9
-
$1,027 USD
View
B
Retailer 10
-
$1,075 USD
View
Most Expensive
B
MOH London
LG436047412 · Oct 29
$1,346 USD
£1,060 GBP
View
10 more retailers have this diamond
Prices start from $270 USDSave up to $1,076 USD

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
$270 USD