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Marquise|Lab Grown|IGI

0.50ct E FL Marquise Lab Grown Diamond

ID • E/FL • IGI LG818663121

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG818663121

Diamond specifications and retailer prices

From $380 AUD
$267 USD
As of October 31, 2026
Save $1,498 AUD (80%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $1,878 AUD at Reve Diamonds · As of October 30, 2026
View at Reve Diamonds

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 FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818663121 or 818663121. Listed at 19 retailers as of October 30, 2026, with prices from $380 to $1,878, a $1,498 spread on the same certified stone. Reve Diamonds lists it at $1,878. Flawless clarity in sub-one-carat stones is rarely visible to the naked eye over VS1, so you are paying a meaningful premium for grade rather than appearance.

The 4Cs

0.50
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818663121
Dimensions8.16 × 4.10 × 2.56 mm
L/W Ratio1.99
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
8.16 mm4.10 mm0.50 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818663121
Side View
Table 60.0%Crown 36.1°Girdle: MediumPavilion 40.1°Culet: NoneDepth 62.4%

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 31
Current: $793 AUD|Low: $270 AUD|High: $1,974 AUD|Avg: $928 AUD|-5.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Reve Diamonds
October 31, 2026
Retailer 4$380 AUD
Retailer 2$423 AUD
Retailer 12$514 AUD
Retailer 13$595 AUD
Retailer 11$662 AUD
Retailer 6$698 AUD
Retailer 9$701 AUD
Retailer 8$764 AUD
Retailer 1$793 AUD
Retailer 3$923 AUD
Retailer 10$1,362 AUD
Retailer 5$1,432 AUD
Retailer 7$1,703 AUD
Reve Diamonds$1,878 AUD

34 data points across 14 retailers

19 retailers$380 AUD to $1,878 AUD

Retailer 1
-
$340 AUD
$239 USD
Price last confirmed 24 days ago
A
Retailer 2
-
$380 AUD
$267 USD
View
Final sale: no returns
Retailer 3
-
$396 AUD
$278 USD
View
Price last confirmed 33 days ago
Retailer 4
-
$417 AUD
$293 USD
View
Price last confirmed 37 days ago
Retailer 5
-
$423 AUD
$297 USD
View
Price last confirmed 20 days ago
Retailer 6
-
$423 AUD
$297 USD
View
Price last confirmed 29 days ago
A
Retailer 7
-
$514 AUD
$361 USD
View
A
Retailer 8
-
$595 AUD
$418 USD
View
A
Retailer 9
-
$662 AUD
$465 USD
View
B+
Retailer 10
-
$698 AUD
$490 USD
View
B+
Retailer 11
-
$701 AUD
€469 EUR
View
B+
Retailer 12
-
$764 AUD
ZAR 8,672 ZAR
View
B+
Retailer 13
-
$793 AUD
£439 GBP
View
B+
Retailer 14
-
$923 AUD
$648 USD
View
Retailer 15
-
$1,358 AUD
$954 USD
View
Price last confirmed 31 days ago
B
Retailer 16
-
$1,362 AUD
$957 USD
View
B
Retailer 17
-
$1,432 AUD
$1,006 USD
View
B
Retailer 18
-
$1,703 AUD
£942 GBP
View
Most Expensive
B
Reve Diamonds
C1C484CBD · Oct 30
$1,878 AUD
$1,319 USD
View
18 more retailers have this diamond
Prices start from $380 AUDSave up to $1,498 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
0.50ct Marquise
$380 AUD