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Marquise|Lab Grown|IGI

1.00ct E FL Marquise Lab Grown Diamond

ID • E/FL • IGI LG818655779

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG818655779

Diamond specifications and retailer prices

From $474 AUD
HK$2,600 HKD
As of October 31, 2026
Save $2,003 AUD (81%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $2,477 AUD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1ct lab-grown marquise diamond

This 1ct lab-grown marquise sits in the classic one-carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818655779 or 818655779. Listed at 12 retailers as of October 31, 2026, with prices from $474 to $2,477, a $2,003 spread on the same certified stone. Brilliant Earth lists it at $2,477. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.00
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818655779
Dimensions10.11 × 5.23 × 3.27 mm
L/W Ratio1.93
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
10.11 mm5.23 mm1.00 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818655779
Side View
Table 57.0%Crown 33°Girdle: MED-STKPavilion 40.1°Culet: NoneDepth 62.5%

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: Oct 31
Current: $2,477 AUD|Low: $474 AUD|High: $3,103 AUD|Avg: $1,279 AUD|-20.2%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 8$474 AUD
Retailer 12$569 AUD
Retailer 6$677 AUD
Retailer 7$693 AUD
Retailer 9$733 AUD
Retailer 5$754 AUD
Retailer 11$799 AUD
Retailer 10$877 AUD
Retailer 4$1,372 AUD
Retailer 3$1,471 AUD
Retailer 2$1,616 AUD
Brilliant Earth$2,477 AUD

45 data points across 12 retailers

12 retailers$474 AUD to $2,477 AUD

A
Cheapest Retailer
-
$474 AUD
HK$2,600 HKD
A
Retailer 2
-
$569 AUD
$400 USD
View
A
Retailer 3
-
$677 AUD
€453 EUR
View
A
Retailer 4
-
$693 AUD
ZAR 7,866 ZAR
View
A
Retailer 5
-
$733 AUD
$515 USD
View
A
Retailer 6
-
$754 AUD
£417 GBP
View
A
Retailer 7
-
$799 AUD
$561 USD
View
Retailer 8
-
$877 AUD
$616 USD
View
Price last confirmed 8 days ago
B+
Retailer 9
-
$1,372 AUD
$964 USD
View
B+
Retailer 10
-
$1,471 AUD
$1,033 USD
View
B+
Retailer 11
-
$1,616 AUD
£894 GBP
View
Most Expensive
B
Brilliant Earth
21359035A · Oct 31
$2,477 AUD
$1,740 USD
View
11 more retailers have this diamond
Prices start from $474 AUDSave up to $2,003 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
1.00ct Marquise
$474 AUD