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Marquise|Lab Grown|IGI

1.51ct D VS1 Marquise Lab Grown Diamond

ID • D/VS1 • IGI LG799609421

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG799609421

Diamond specifications and retailer prices

From $401 AUD
As of November 4, 2026
Save $1,669 AUD (81%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $3,065 AUD at Brilliant Earth · As of October 4, 2026
View at Brilliant Earth

About this 1.51ct lab-grown marquise diamond

This 1.51ct lab-grown marquise sits in the one-and-a-half to two carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG799609421 or 799609421. Listed at 24 retailers as of November 4, 2026, with a 417% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
D
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.4°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG799609421
Dimensions11.93 × 6.12 × 3.69 mm
L/W Ratio1.95
Girdle conditionFaceted
Culet sizePointed
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
11.93 mm6.12 mm1.51 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG799609421
Side View
Table 61.0%Crown 32.4°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 60.3%

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: $867 AUD|Low: $401 AUD|High: $2,177 AUD|Avg: $1,009 AUD|-8.0%
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Retailer 22
November 5, 2026
Retailer 3$401 AUD
Retailer 8$448 AUD
Retailer 22$465 AUD
Retailer 4$496 AUD
Retailer 19$496 AUD
Retailer 9$547 AUD
Retailer 12$552 AUD
Retailer 10$670 AUD
Retailer 20$720 AUD
Retailer 5$770 AUD
Retailer 2$813 AUD
Retailer 17$855 AUD
Retailer 1$867 AUD
Retailer 6$868 AUD
Retailer 16$1,165 AUD
Retailer 11$1,527 AUD
Retailer 21$1,597 AUD
Retailer 14$1,598 AUD
Retailer 7$1,668 AUD
Retailer 15$1,910 AUD
Retailer 18$1,991 AUD
Retailer 13$2,070 AUD

29 data points across 22 retailers

24 retailers$401 AUD to $2,070 AUD

A
Cheapest Retailer
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$401 AUD
A
Retailer 2
-
$448 AUD
View
Final sale: no returns
A
Retailer 3
-
$465 AUD
View
Retailer 4
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$496 AUD
View
Price last confirmed 11 days ago
A
Retailer 5
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$496 AUD
View
A
Retailer 6
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$547 AUD
View
A
Retailer 7
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$552 AUD
View
A
Retailer 8
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$670 AUD
View
A
Retailer 9
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$720 AUD
View
A
Retailer 10
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$770 AUD
View
Retailer 11
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$813 AUD
View
Price last confirmed 9 days ago
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Retailer 12
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$855 AUD
View
A
Retailer 13
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$867 AUD
View
A
Retailer 14
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$868 AUD
View
B+
Retailer 15
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$1,165 AUD
View
B+
Retailer 16
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$1,527 AUD
View
B+
Retailer 17
-
$1,597 AUD
View
B+
Retailer 18
-
$1,598 AUD
View
B
Retailer 19
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$1,668 AUD
View
B
Retailer 20
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$1,773 AUD
View
B
Retailer 21
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$1,910 AUD
View
B
Retailer 22
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$1,991 AUD
View
B
Retailer 23
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$2,070 AUD
View
Most Expensive
Brilliant Earth
19046110A · Oct 4
$3,065 AUD
$2,150 USD
View
Price last confirmed 31 days ago
23 more retailers have this diamond
Prices start from $401 AUDSave up to $1,669 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
1.51ct Marquise
$401 AUD