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Marquise|Lab Grown|IGI

1.21ct F IF Marquise Lab Grown Diamond

ID • F/IF • IGI LG786675964

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG786675964

Diamond specifications and retailer prices

From $391 AUD
As of November 5, 2026
Save $2,137 AUD (85%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $2,528 AUD at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.21ct lab-grown marquise diamond

This 1.21ct 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 LG786675964 or 786675964. Listed at 17 retailers as of November 4, 2026, with prices from $391 to $2,528, a $2,137 spread on the same certified stone. Brilliant Earth lists it at $2,528. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
F
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle39.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG786675964
Dimensions11.19 × 5.56 × 3.40 mm
L/W Ratio2.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.19 mm5.56 mm1.21 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG786675964
Side View
Table 59.0%Crown 35.1°Girdle: MED-STKPavilion 39.3°Culet: NoneDepth 61.2%

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: Nov 5
Current: $1,518 AUD|Low: $391 AUD|High: $1,818 AUD|Avg: $1,052 AUD|-3.2%
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
Retailer 14
Retailer 15
November 6, 2026
Retailer 8$391 AUD
Retailer 12$409 AUD
Retailer 4$589 AUD
Retailer 7$671 AUD
Retailer 2$756 AUD
Retailer 6$811 AUD
Retailer 10$820 AUD
Retailer 3$884 AUD
Retailer 15$1,069 AUD
Retailer 5$1,153 AUD
Retailer 9$1,403 AUD
Retailer 13$1,407 AUD
Retailer 14$1,476 AUD
Retailer 1$1,518 AUD
Retailer 11$1,743 AUD

25 data points across 15 retailers

17 retailers$391 AUD to $2,528 AUD

A
Cheapest Retailer
-
$391 AUD
Final sale: no returns
A
Retailer 2
-
$409 AUD
View
A
Retailer 3
-
$589 AUD
View
Retailer 4
-
$671 AUD
View
Price last confirmed 13 days ago
A
Retailer 5
-
$756 AUD
View
Retailer 6
-
$811 AUD
View
Price last confirmed 8 days ago
A
Retailer 7
-
$820 AUD
View
A
Retailer 8
-
$884 AUD
View
B+
Retailer 9
-
$1,069 AUD
View
B+
Retailer 10
-
$1,153 AUD
View
B+
Retailer 11
-
$1,403 AUD
View
B+
Retailer 12
-
$1,407 AUD
View
B+
Retailer 13
-
$1,476 AUD
View
B+
Retailer 14
-
$1,518 AUD
View
Retailer 15
-
$1,593 AUD
View
Price last confirmed 32 days ago
B+
Retailer 16
-
$1,743 AUD
View
Most Expensive
B
Brilliant Earth
18735861A · Nov 4
$2,528 AUD
$1,770 USD
View
16 more retailers have this diamond
Prices start from $391 AUDSave up to $2,137 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
1.21ct Marquise
$391 AUD