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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 $282 USD
As of November 2, 2026
Save $1,190 USD (81%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $1,472 USD 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 $282 to $1,472, a $1,190 spread on the same certified stone. With Clarity lists it at $1,472. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $409 USD|Low: $282 USD|High: $1,472 USD|Avg: $765 USD|-2.2%
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$282 USD
Retailer 11$315 USD
Retailer 7$327 USD
Retailer 4$350 USD
Retailer 6$350 USD
Retailer 1$409 USD
Retailer 3$505 USD
Retailer 20$577 USD
Retailer 14$603 USD
Retailer 12$612 USD
Retailer 18$696 USD
Retailer 8$697 USD
Retailer 19$813 USD
Retailer 16$908 USD
Retailer 17$1,080 USD
Retailer 13$1,122 USD
Retailer 5$1,124 USD
Retailer 9$1,174 USD
Retailer 2$1,235 USD
Retailer 15$1,401 USD
With Clarity$1,472 USD

25 data points across 21 retailers

22 retailers$282 USD to $1,472 USD

A
Cheapest Retailer
-
$282 USD
A
Retailer 2
-
$315 USD
View
Final sale: no returns
A
Retailer 3
-
$327 USD
View
Retailer 4
-
$350 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
$350 USD
View
A
Retailer 6
-
$409 USD
£322 GBP
View
A
Retailer 7
-
$505 USD
View
A
Retailer 8
-
$577 USD
View
A
Retailer 9
-
$603 USD
ZAR 9,739 ZAR
View
A
Retailer 10
-
$612 USD
£482 GBP
View
A
Retailer 11
-
$696 USD
View
A
Retailer 12
-
$697 USD
View
A
Retailer 13
-
$813 USD
A$1,251 AUD
View
B+
Retailer 14
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$908 USD
View
B+
Retailer 15
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$1,080 USD
A$1,661 AUD
View
B+
Retailer 16
-
$1,122 USD
SGD 1,516 SGD
View
B+
Retailer 17
-
$1,124 USD
View
B+
Retailer 18
-
$1,174 USD
View
B+
Retailer 19
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$1,235 USD
View
B+
Retailer 20
-
$1,345 USD
View
B+
Retailer 21
-
$1,401 USD
£1,103 GBP
View
Most Expensive
B
With Clarity
818682269 · Nov 1
$1,472 USD
View
21 more retailers have this diamond
Prices start from $282 USDSave up to $1,190 USD

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
$282 USD