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Marquise|Lab Grown|IGI

1.78ct F VS1 Marquise Lab Grown Diamond

ID • F/VS1 • IGI LG847640520

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG847640520

Diamond specifications and retailer prices

From $381 AUD
$267 USD
As of November 2, 2026
Save $1,659 AUD (81%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $2,040 AUD at With Clarity · As of November 1, 2026
View at With Clarity

About this 1.78ct lab-grown marquise diamond

This 1.78ct lab-grown marquise sits in the one-and-a-half to two carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG847640520 or 847640520. Listed at 12 retailers as of November 1, 2026, with prices from $381 to $2,040, a $1,659 spread on the same certified stone. With Clarity lists it at $2,040. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.78
Carat
F
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG847640520
Dimensions12.53 × 6.32 × 3.95 mm
L/W Ratio1.98
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.53 mm6.32 mm1.78 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG847640520
Side View
Table 60.0%Crown 36°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 62.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $552 AUD|Low: $381 AUD|High: $2,040 AUD|Avg: $1,165 AUD|-0.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
With Clarity
November 2, 2026
Retailer 11$381 AUD
Retailer 9$442 AUD
Retailer 1$552 AUD
Retailer 5$699 AUD
Retailer 2$778 AUD
Retailer 3$969 AUD
Retailer 10$1,099 AUD
Retailer 4$1,453 AUD
Retailer 7$1,520 AUD
Retailer 8$1,734 AUD
Retailer 6$1,905 AUD
With Clarity$2,040 AUD

10 data points across 12 retailers

12 retailers$381 AUD to $2,040 AUD

A
Cheapest Retailer
-
$381 AUD
$267 USD
A
Retailer 2
-
$442 AUD
$310 USD
View
A
Retailer 3
-
$552 AUD
£305 GBP
View
A
Retailer 4
-
$699 AUD
$490 USD
View
Retailer 5
-
$778 AUD
€519 EUR
View
Price last confirmed 8 days ago
A
Retailer 6
-
$969 AUD
$679 USD
View
A
Retailer 7
-
$1,099 AUD
View
B+
Retailer 8
-
$1,453 AUD
$1,018 USD
View
B+
Retailer 9
-
$1,520 AUD
$1,065 USD
View
B
Retailer 10
-
$1,734 AUD
$1,215 USD
View
B
Retailer 11
-
$1,905 AUD
£1,051 GBP
View
Most Expensive
B
With Clarity
847640520 · Nov 1
$2,040 AUD
$1,430 USD
View
11 more retailers have this diamond
Prices start from $381 AUDSave up to $1,659 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
1.78ct Marquise
$381 AUD