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Marquise|Lab Grown|IGI

1.21ct D VS1 Marquise Lab Grown Diamond

ID • D/VS1 • IGI LG841674554

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG841674554

Diamond specifications and retailer prices

From $288 AUD
As of November 4, 2026
Save $1,551 AUD (84%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $1,839 AUD at Brilliant Earth · As of October 30, 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 D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG841674554 or 841674554. Listed at 19 retailers as of October 30, 2026, with prices from $288 to $1,839, a $1,551 spread on the same certified stone. Brilliant Earth lists it at $1,839. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
D
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle30.8°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG841674554
Dimensions10.90 × 5.59 × 3.45 mm
L/W Ratio1.95
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.90 mm5.59 mm1.21 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG841674554
Side View
Table 61.0%Crown 30.8°Girdle: MED-STKPavilion 41.3°Culet: NoneDepth 61.7%

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 4
Current: $1,839 AUD|Low: $288 AUD|High: $1,839 AUD|Avg: $811 AUD
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
Retailer 16
Retailer 17
Retailer 18
November 4, 2026
Retailer 3$288 AUD
Retailer 8$321 AUD
Retailer 6$356 AUD
Retailer 9$356 AUD
Retailer 2$475 AUD
Retailer 7$482 AUD
Retailer 14$614 AUD
Retailer 18$620 AUD
Retailer 11$647 AUD
Retailer 5$664 AUD
Retailer 12$720 AUD
Retailer 16$862 AUD
Retailer 13$868 AUD
Retailer 17$1,120 AUD
Retailer 4$1,220 AUD
Retailer 15$1,665 AUD
Retailer 10$1,708 AUD
Brilliant Earth$1,839 AUD

31 data points across 18 retailers

19 retailers$288 AUD to $1,839 AUD

A
Cheapest Retailer
-
$288 AUD
A
Retailer 2
-
$321 AUD
View
Final sale: no returns
A
Retailer 3
-
$356 AUD
View
Retailer 4
-
$356 AUD
View
Price last confirmed 10 days ago
A
Retailer 5
-
$475 AUD
View
B+
Retailer 6
-
$482 AUD
View
A
Retailer 7
-
$614 AUD
View
Retailer 8
-
$620 AUD
View
Price last confirmed 8 days ago
A
Retailer 9
-
$647 AUD
View
A
Retailer 10
-
$664 AUD
View
A
Retailer 11
-
$720 AUD
View
B+
Retailer 12
-
$862 AUD
View
B+
Retailer 13
-
$868 AUD
View
Retailer 14
-
$1,083 AUD
View
Price last confirmed 28 days ago
Retailer 15
-
$1,120 AUD
View
Price last confirmed 8 days ago
B
Retailer 16
-
$1,220 AUD
View
B
Retailer 17
-
$1,665 AUD
View
B
Retailer 18
-
$1,708 AUD
View
Most Expensive
B
Brilliant Earth
21789863A · Oct 30
$1,839 AUD
$1,290 USD
View
18 more retailers have this diamond
Prices start from $288 AUDSave up to $1,551 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
$288 AUD