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Marquise|Lab Grown|IGI

5.09ct D VS1 Marquise Lab Grown Diamond

EX • D/VS1 • IGI LG843668517

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG843668517

Diamond specifications and retailer prices

From $1,845 AUD
$1,296 USD
As of October 30, 2026
Save $10,910 AUD (86%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $12,755 AUD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 5.09ct lab-grown marquise diamond

This 5.09ct lab-grown marquise sits in the over five carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG843668517 or 843668517. Listed at 23 retailers as of October 30, 2026, with prices from $1,845 to $12,755, a $10,910 spread on the same certified stone. Brilliant Earth lists it at $12,755. 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

5.09
Carat
D
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.2°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG843668517
Dimensions17.42 × 8.87 × 5.61 mm
L/W Ratio1.96
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
17.42 mm8.87 mm5.09 ctD / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG843668517
Side View
Table 60.0%Crown 38.2°Girdle: STK-THKPavilion 40.2°Culet: NoneDepth 63.2%

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: Oct 30
Current: $12,755 AUD|Low: $1,845 AUD|High: $12,755 AUD|Avg: $4,167 AUD
Brilliant Earth
Retailer 2
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Retailer 17
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Retailer 23
November 1, 2026
Retailer 9$1,845 AUD
Retailer 22$2,007 AUD
Retailer 14$2,064 AUD
Retailer 5$2,140 AUD
Retailer 8$2,329 AUD
Retailer 23$2,385 AUD
Retailer 12$2,582 AUD
Retailer 16$2,807 AUD
Retailer 2$3,016 AUD
Retailer 20$3,561 AUD
Retailer 18$3,751 AUD
Retailer 3$3,822 AUD
Retailer 11$4,010 AUD
Retailer 13$4,336 AUD
Retailer 19$4,347 AUD
Retailer 15$5,164 AUD
Retailer 7$6,139 AUD
Retailer 6$6,366 AUD
Retailer 21$6,883 AUD
Retailer 17$7,176 AUD
Retailer 10$7,512 AUD
Retailer 4$8,050 AUD
Brilliant Earth$12,755 AUD

18 data points across 23 retailers

23 retailers$1,845 AUD to $12,755 AUD

A
Cheapest Retailer
-
$1,845 AUD
$1,296 USD
A
Retailer 2
-
$2,007 AUD
$1,410 USD
View
A
Retailer 3
-
$2,064 AUD
$1,450 USD
View
Final sale: no returns
A
Retailer 4
-
$2,140 AUD
$1,503 USD
View
Retailer 5
-
$2,329 AUD
£1,288 GBP
View
Price last confirmed 15 days ago
A
Retailer 6
-
$2,385 AUD
$1,675 USD
View
A
Retailer 7
-
$2,582 AUD
$1,814 USD
View
A
Retailer 8
-
$2,807 AUD
$1,972 USD
View
A
Retailer 9
-
$3,016 AUD
£1,668 GBP
View
B+
Retailer 10
-
$3,561 AUD
€2,382 EUR
View
B+
Retailer 11
-
$3,751 AUD
$2,635 USD
View
B+
Retailer 12
-
$3,822 AUD
$2,685 USD
View
B+
Retailer 13
-
$4,010 AUD
$2,817 USD
View
B+
Retailer 14
-
$4,336 AUD
View
B+
Retailer 15
-
$4,347 AUD
ZAR 49,330 ZAR
View
B
Retailer 16
-
$5,164 AUD
£2,856 GBP
View
B
Retailer 17
-
$6,139 AUD
$4,312 USD
View
B
Retailer 18
-
$6,366 AUD
$4,472 USD
View
B
Retailer 19
-
$6,883 AUD
£3,807 GBP
View
B
Retailer 20
-
$7,176 AUD
View
B
Retailer 21
-
$7,512 AUD
$5,276 USD
View
B
Retailer 22
-
$8,050 AUD
$5,655 USD
View
Most Expensive
B
Brilliant Earth
22286823A · Oct 31
$12,755 AUD
$8,960 USD
View
22 more retailers have this diamond
Prices start from $1,845 AUDSave up to $10,910 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
5.09ct Marquise
$1,845 AUD