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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 $681 AUD
$477 USD
As of November 2, 2026
Save $921 AUD (58%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $1,602 AUD 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 $681 to $1,602, a $921 spread on the same certified stone. Novita Diamonds lists it at $1,602. 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 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: $1,602 AUD|Low: $681 AUD|High: $1,602 AUD|Avg: $859 AUD
Novita Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 29, 2026
Retailer 5$681 AUD
Retailer 6$725 AUD
Retailer 4$795 AUD
Retailer 7$876 AUD
Retailer 2$895 AUD
Retailer 3$930 AUD
Novita Diamonds$1,602 AUD

13 data points across 7 retailers

6 retailers$681 AUD to $1,602 AUD

A
Cheapest Retailer
-
$681 AUD
$477 USD
B+
Retailer 2
-
$725 AUD
$508 USD
View
A
Retailer 3
-
$795 AUD
$557 USD
View
A
Retailer 4
-
$805 AUD
$564 USD
View
A
Retailer 5
-
$930 AUD
€621 EUR
View
Most Expensive
B+
Novita Diamonds
cert_837615313 · Oct 29
$1,602 AUD
View
5 more retailers have this diamond
Prices start from $681 AUDSave up to $921 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
$681 AUD