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Marquise|Lab Grown|IGI

6.09ct F VS1 Marquise Lab Grown Diamond

ID • F/VS1 • IGI LG717578690

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG717578690

Diamond specifications and retailer prices

From $3,228 AUD
CA$3,142 CAD
As of November 2, 2026
Save $1,430 AUD (31%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $4,657 AUD at The Diamond Guys · As of November 1, 2026
View at The Diamond Guys

About this 6.09ct lab-grown marquise diamond

This 6.09ct lab-grown marquise sits in the over five carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG717578690 or 717578690. Listed at 2 retailers as of November 1, 2026, with prices from $3,228 to $4,657, a $1,430 spread on the same certified stone. The Diamond Guys lists it at $4,657. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

6.09
Carat
F
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG717578690
Dimensions18.97 × 9.44 mm
L/W Ratio2.01
Girdle conditionFaceted
Culet sizePointed
Top View
18.97 mm9.44 mm6.09 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG717578690
Side View
Table 62.0%Crown 34.9°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 62.5%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 2
Current: $1,642 AUD|Low: $1,167 AUD|High: $8,019 AUD|Avg: $3,613 AUD|-14.9%
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
The Diamond Guys
September 16, 2026
Retailer 8$1,167 AUD
Retailer 1$1,642 AUD
Retailer 5$1,659 AUD
Retailer 3$1,834 AUD
Retailer 2$1,859 AUD
Retailer 14$2,339 AUD
Retailer 7$2,687 AUD
Retailer 12$3,082 AUD
Retailer 13$3,228 AUD
Retailer 10$3,642 AUD
Retailer 6$3,914 AUD
The Diamond Guys$4,657 AUD
Retailer 4$6,152 AUD
Retailer 9$6,906 AUD
Retailer 11$7,630 AUD

56 data points across 15 retailers

2 retailers$3,228 AUD to $4,657 AUD

B+
Cheapest Retailer
-
$3,228 AUD
CA$3,142 CAD
Most Expensive
B
The Diamond Guys
1954435164 · Nov 1
$4,657 AUD
$3,264 USD
View
1 more retailer has this diamond
Prices start from $3,228 AUDSave up to $1,430 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.

B+
6.09ct Marquise
$3,228 AUD