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Marquise|Lab Grown|IGI

1.78ct F VVS1 Marquise Lab Grown Diamond

VG • F/VVS1 • IGI LG762550421

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG762550421

Diamond specifications and retailer prices

From $374 AUD
$262 USD
As of November 2, 2026
Save $2,380 AUD (86%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $2,754 AUD at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

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 VVS1 clarity (very-very-slightly-included), with a very-good cut grade and certified by IGI LG762550421 or 762550421. Listed at 11 retailers as of November 2, 2026, with prices from $374 to $2,754, a $2,380 spread on the same certified stone. Brilliant Earth lists it at $2,754. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.78
Carat
F
Colour
VVS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle38.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG762550421
Dimensions13.28 × 6.32 × 3.67 mm
L/W Ratio2.10
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
13.28 mm6.32 mm1.78 ctF / VVS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG762550421
Side View
Table 59.0%Crown 33°Girdle: MED-STKPavilion 38.6°Culet: NoneDepth 58.1%

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: $2,754 AUD|Low: $374 AUD|High: $3,239 AUD|Avg: $1,294 AUD|-15.0%
Brilliant Earth
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
November 2, 2026
Retailer 10$374 AUD
Retailer 11$434 AUD
Retailer 2$495 AUD
Retailer 6$639 AUD
Retailer 3$642 AUD
Retailer 14$642 AUD
Retailer 16$860 AUD
Retailer 7$1,040 AUD
Retailer 15$1,088 AUD
Retailer 5$1,206 AUD
Retailer 9$1,423 AUD
Retailer 13$1,490 AUD
Retailer 4$1,815 AUD
Retailer 12$1,856 AUD
Retailer 8$2,659 AUD
Brilliant Earth$2,754 AUD

34 data points across 16 retailers

11 retailers$374 AUD to $2,754 AUD

A
Cheapest Retailer
-
$374 AUD
$262 USD
A
Retailer 2
-
$434 AUD
$304 USD
View
A
Retailer 3
-
$495 AUD
£273 GBP
View
B+
Retailer 4
-
$642 AUD
$450 USD
View
A
Retailer 5
-
$642 AUD
$450 USD
View
A
Retailer 6
-
$860 AUD
€574 EUR
View
A
Retailer 7
-
$1,088 AUD
View
B+
Retailer 8
-
$1,423 AUD
$997 USD
View
B+
Retailer 9
-
$1,490 AUD
$1,044 USD
View
B+
Retailer 10
-
$1,856 AUD
£1,024 GBP
View
Most Expensive
B
Brilliant Earth
18247344A · Nov 2
$2,754 AUD
$1,930 USD
View
10 more retailers have this diamond
Prices start from $374 AUDSave up to $2,380 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
$374 AUD