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Marquise|Lab Grown|IGI

1.78ct F VS1 Marquise Lab Grown Diamond

EX • F/VS1 • IGI LG837615313

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG837615313

Diamond specifications and retailer prices

From $477 USD
As of November 2, 2026
Save $646 USD (58%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $1,123 USD at Novita Diamonds · As of October 29, 2026
View at Novita Diamonds

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 LG837615313 or 837615313. Listed at 6 retailers as of October 29, 2026, with prices from $477 to $1,123, a $646 spread on the same certified stone. Novita Diamonds lists it at $1,123. 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 angle34.8°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG837615313
Dimensions12.55 × 6.30 × 4.04 mm
L/W Ratio1.99
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.55 mm6.30 mm1.78 ctF / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG837615313
Side View
Table 57.0%Crown 34.8°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 64.1%

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: $1,123 USD|Low: $477 USD|High: $1,123 USD|Avg: $602 USD
Novita Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 29, 2026
Retailer 5$477 USD
Retailer 6$508 USD
Retailer 4$557 USD
Retailer 7$614 USD
Retailer 2$627 USD
Retailer 3$652 USD
Novita Diamonds$1,123 USD

13 data points across 7 retailers

6 retailers$477 USD to $1,123 USD

A
Cheapest Retailer
-
$477 USD
B+
Retailer 2
-
$508 USD
View
A
Retailer 3
-
$557 USD
View
A
Retailer 4
-
$564 USD
View
A
Retailer 5
-
$652 USD
€621 EUR
View
Most Expensive
B+
Novita Diamonds
cert_837615313 · Oct 29
$1,123 USD
A$1,727 AUD
View
5 more retailers have this diamond
Prices start from $477 USDSave up to $646 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
$477 USD