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Marquise|Lab Grown|IGI

1.03ct F IF Marquise Lab Grown Diamond

EX • F/IF • IGI LG818677644

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG818677644

Diamond specifications and retailer prices

From $424 AUD
As of November 5, 2026
Save $1,376 AUD (76%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $1,800 AUD at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.03ct lab-grown marquise diamond

This 1.03ct lab-grown marquise sits in the classic one-carat band, graded F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818677644 or 818677644. Listed at 21 retailers as of November 4, 2026, with prices from $424 to $1,800, a $1,376 spread on the same certified stone. Brilliant Earth lists it at $1,800. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.03
Carat
F
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle38.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818677644
Dimensions9.67 × 5.46 × 3.27 mm
L/W Ratio1.77
Girdle conditionFaceted
Culet sizeNone
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
9.67 mm5.46 mm1.03 ctF / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818677644
Side View
Table 62.0%Crown 35.3°Girdle: STK-THKPavilion 38.9°Culet: NoneDepth 59.9%

Caratlytics Score

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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: Nov 5
Current: $1,800 AUD|Low: $323 AUD|High: $2,528 AUD|Avg: $1,018 AUD|-28.8%
Brilliant Earth
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
Retailer 15
November 5, 2026
Retailer 7$323 AUD
Retailer 5$423 AUD
Retailer 12$424 AUD
Retailer 4$697 AUD
Retailer 10$717 AUD
Retailer 14$729 AUD
Retailer 2$796 AUD
Retailer 3$824 AUD
Retailer 6$871 AUD
Retailer 13$1,040 AUD
Retailer 9$1,071 AUD
Retailer 8$1,364 AUD
Retailer 11$1,437 AUD
Retailer 15$1,691 AUD
Brilliant Earth$1,800 AUD

45 data points across 15 retailers

21 retailers$424 AUD to $1,800 AUD

Retailer 1
-
$323 AUD
Price last confirmed 35 days ago
Retailer 2
-
$334 AUD
View
Price last confirmed 29 days ago
Retailer 3
-
$390 AUD
View
Price last confirmed 38 days ago
Retailer 4
-
$411 AUD
View
Price last confirmed 39 days ago
Retailer 5
-
$416 AUD
View
Price last confirmed 34 days ago
Retailer 6
-
$423 AUD
View
Price last confirmed 12 days ago
A
Retailer 7
-
$424 AUD
View
Retailer 8
-
$697 AUD
View
Price last confirmed 10 days ago
A
Retailer 9
-
$717 AUD
View
A
Retailer 10
-
$729 AUD
View
B+
Retailer 11
-
$796 AUD
View
B+
Retailer 12
-
$824 AUD
View
B+
Retailer 13
-
$871 AUD
View
B+
Retailer 14
-
$1,040 AUD
View
B+
Retailer 15
-
$1,071 AUD
View
Retailer 16
-
$1,340 AUD
View
Price last confirmed 37 days ago
Retailer 17
-
$1,359 AUD
View
Price last confirmed 9 days ago
B
Retailer 18
-
$1,364 AUD
View
B
Retailer 19
-
$1,437 AUD
View
B
Retailer 20
-
$1,691 AUD
View
Most Expensive
B
Brilliant Earth
20947976A · Nov 4
$1,800 AUD
$1,260 USD
View
20 more retailers have this diamond
Prices start from $424 AUDSave up to $1,376 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
1.03ct Marquise
$424 AUD