CaratHunter
Plans
Marquise|Lab Grown|IGI

1.78ct F VVS1 Marquise Lab Grown Diamond

VG • F/VVS1 • IGI LG788646744

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG788646744

Diamond specifications and retailer prices

From $458 AUD
$321 USD
As of November 1, 2026
Save $2,339 AUD (84%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $2,797 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 LG788646744 or 788646744. Listed at 19 retailers as of November 1, 2026, with prices from $458 to $2,797, a $2,339 spread on the same certified stone. Brilliant Earth lists it at $2,797. 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 angle33.1°
Pavilion angle39.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG788646744
Dimensions13.26 × 6.34 × 3.69 mm
L/W Ratio2.09
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
13.26 mm6.34 mm1.78 ctF / VVS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG788646744
Side View
Table 61.0%Crown 33.1°Girdle: MED-STKPavilion 39.1°Culet: NoneDepth 58.2%

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 1
Current: $2,797 AUD|Low: $458 AUD|High: $3,082 AUD|Avg: $1,413 AUD|-9.3%
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
Retailer 17
Retailer 18
November 3, 2026
Retailer 7$458 AUD
Retailer 3$474 AUD
Retailer 4$685 AUD
Retailer 11$728 AUD
Retailer 18$872 AUD
Retailer 2$894 AUD
Retailer 8$938 AUD
Retailer 5$1,002 AUD
Retailer 9$1,194 AUD
Retailer 16$1,194 AUD
Retailer 15$1,554 AUD
Retailer 17$1,626 AUD
Retailer 6$1,704 AUD
Retailer 14$1,955 AUD
Retailer 13$2,028 AUD
Retailer 12$2,113 AUD
Retailer 10$2,547 AUD
Brilliant Earth$2,797 AUD

19 data points across 18 retailers

19 retailers$458 AUD to $2,797 AUD

A
Cheapest Retailer
-
$458 AUD
$321 USD
Final sale: no returns
A
Retailer 2
-
$474 AUD
$332 USD
View
B+
Retailer 3
-
$685 AUD
$480 USD
View
A
Retailer 4
-
$728 AUD
$510 USD
View
A
Retailer 5
-
$872 AUD
ZAR 9,878 ZAR
View
A
Retailer 6
-
$894 AUD
£493 GBP
View
A
Retailer 7
-
$938 AUD
€626 EUR
View
A
Retailer 8
-
$1,002 AUD
$702 USD
View
B+
Retailer 9
-
$1,194 AUD
View
A
Retailer 10
-
$1,194 AUD
$837 USD
View
B
Retailer 11
-
$1,554 AUD
$1,089 USD
View
B+
Retailer 12
-
$1,626 AUD
SGD 1,540 SGD
View
B+
Retailer 13
-
$1,704 AUD
$1,194 USD
View
B
Retailer 14
-
$1,955 AUD
$1,370 USD
View
B
Retailer 15
-
$2,028 AUD
£1,119 GBP
View
B
Retailer 16
-
$2,113 AUD
$1,481 USD
View
Retailer 17
-
$2,122 AUD
View
Price last confirmed 29 days ago
B
Retailer 18
-
$2,547 AUD
$1,785 USD
View
Most Expensive
B
Brilliant Earth
18729050A · Nov 2
$2,797 AUD
$1,960 USD
View
18 more retailers have this diamond
Prices start from $458 AUDSave up to $2,339 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
$458 AUD