CaratHunter
Plans
Marquise|Lab Grown|IGI

0.40ct F SI1 Marquise Lab Grown Diamond

ID • F/SI1 • IGI LG538275500

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG538275500

Diamond specifications and retailer prices

From $148 AUD
$104 USD
As of November 2, 2026
Save $441 AUD (75%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $1,531 AUD at MOH London · As of November 1, 2026
View at MOH London

About this 0.4ct lab-grown marquise diamond

This 0.4ct lab-grown marquise sits in the sub-half-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG538275500 or 538275500. Listed at 12 retailers as of October 31, 2026, with a 297% 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

0.40
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle30.1°
Pavilion angle42.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG538275500
Dimensions7.36 × 3.89 × 2.47 mm
L/W Ratio1.89
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
7.36 mm3.89 mm0.40 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG538275500
Side View
Table 62.5%Crown 30.1°Girdle: MED-STKPavilion 42.2°Culet: NoneDepth 63.5%

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: $1,531 AUD|Low: $141 AUD|High: $1,549 AUD|Avg: $467 AUD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 6$148 AUD
Retailer 10$171 AUD
Retailer 7$195 AUD
Retailer 11$195 AUD
Retailer 4$328 AUD
Retailer 2$360 AUD
Retailer 9$370 AUD
Retailer 5$471 AUD
Retailer 3$507 AUD
Retailer 8$589 AUD
MOH London$1,531 AUD

44 data points across 11 retailers

12 retailers$148 AUD to $589 AUD

A
Cheapest Retailer
-
$148 AUD
$104 USD
A
Retailer 2
-
$171 AUD
$120 USD
View
A
Retailer 3
-
$195 AUD
$137 USD
View
Retailer 4
-
$195 AUD
$137 USD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
$328 AUD
$230 USD
View
B+
Retailer 6
-
$360 AUD
£199 GBP
View
B+
Retailer 7
-
$370 AUD
$259 USD
View
B+
Retailer 8
-
$438 AUD
HK$2,400 HKD
View
B+
Retailer 9
-
$471 AUD
£260 GBP
View
B
Retailer 10
-
$507 AUD
$355 USD
View
B
Retailer 11
-
$589 AUD
$413 USD
View
Most Expensive
MOH London
LG538275500 · Nov 1
$1,531 AUD
£845 GBP
View
Price under review
11 more retailers have this diamond
Prices start from $148 AUDSave up to $441 AUD

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
0.40ct Marquise
$148 AUD