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Marquise|Lab Grown|IGI

1.78ct F VS1 Marquise Lab Grown Diamond

EX • F/VS1 • IGI LG818682269

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG818682269

Diamond specifications and retailer prices

From $402 AUD
$282 USD
As of November 2, 2026
Save $1,698 AUD (81%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $2,100 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 LG818682269 or 818682269. Listed at 22 retailers as of November 1, 2026, with prices from $402 to $2,100, a $1,698 spread on the same certified stone. With Clarity lists it at $2,100. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.7°
Pavilion angle39.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818682269
Dimensions11.88 × 6.26 × 3.97 mm
L/W Ratio1.90
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.88 mm6.26 mm1.78 ctF / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818682269
Side View
Table 60.0%Crown 38.7°Girdle: STK-VTKPavilion 39.2°Culet: NoneDepth 63.4%

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: $1,308 AUD|Low: $402 AUD|High: $2,100 AUD|Avg: $1,093 AUD|-1.0%
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
With Clarity
November 2, 2026
Retailer 10$402 AUD
Retailer 11$449 AUD
Retailer 7$467 AUD
Retailer 4$499 AUD
Retailer 6$499 AUD
Retailer 12$583 AUD
Retailer 3$721 AUD
Retailer 20$823 AUD
Retailer 15$860 AUD
Retailer 14$873 AUD
Retailer 18$993 AUD
Retailer 8$995 AUD
Retailer 19$1,160 AUD
Retailer 1$1,308 AUD
Retailer 17$1,541 AUD
Retailer 13$1,601 AUD
Retailer 5$1,604 AUD
Retailer 9$1,676 AUD
Retailer 2$1,762 AUD
Retailer 16$1,999 AUD
With Clarity$2,100 AUD

25 data points across 21 retailers

22 retailers$402 AUD to $2,100 AUD

A
Cheapest Retailer
-
$402 AUD
$282 USD
A
Retailer 2
-
$449 AUD
$315 USD
View
Final sale: no returns
A
Retailer 3
-
$467 AUD
$327 USD
View
Retailer 4
-
$499 AUD
$350 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
$499 AUD
$350 USD
View
A
Retailer 6
-
$583 AUD
£322 GBP
View
A
Retailer 7
-
$721 AUD
$505 USD
View
A
Retailer 8
-
$823 AUD
$577 USD
View
A
Retailer 9
-
$860 AUD
ZAR 9,739 ZAR
View
A
Retailer 10
-
$873 AUD
£482 GBP
View
A
Retailer 11
-
$993 AUD
$696 USD
View
A
Retailer 12
-
$995 AUD
$697 USD
View
A
Retailer 13
-
$1,160 AUD
View
B+
Retailer 14
-
$1,308 AUD
$917 USD
View
B+
Retailer 15
-
$1,541 AUD
View
B+
Retailer 16
-
$1,601 AUD
SGD 1,516 SGD
View
B+
Retailer 17
-
$1,604 AUD
$1,124 USD
View
B+
Retailer 18
-
$1,676 AUD
$1,174 USD
View
B+
Retailer 19
-
$1,762 AUD
$1,235 USD
View
B+
Retailer 20
-
$1,919 AUD
$1,345 USD
View
B+
Retailer 21
-
$1,999 AUD
£1,103 GBP
View
Most Expensive
B
With Clarity
818682269 · Nov 1
$2,100 AUD
$1,472 USD
View
21 more retailers have this diamond
Prices start from $402 AUDSave up to $1,698 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
$402 AUD