CaratHunter
Plans
Marquise|Lab Grown|IGI

1.78ct F VS1 Marquise Lab Grown Diamond

ID • F/VS1 • IGI LG840631245

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG840631245

Diamond specifications and retailer prices

From $442 AUD
$310 USD
As of November 2, 2026
Save $1,762 AUD (80%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $2,205 AUD at Reve Diamonds · As of November 1, 2026
View at Reve 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 LG840631245 or 840631245. Listed at 19 retailers as of November 1, 2026, with prices from $442 to $2,205, a $1,762 spread on the same certified stone. Reve Diamonds lists it at $2,205. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle39.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840631245
Dimensions13.14 × 6.18 × 3.82 mm
L/W Ratio2.13
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
13.14 mm6.18 mm1.78 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840631245
Side View
Table 57.0%Crown 34.1°Girdle: MED-STKPavilion 39.2°Culet: NoneDepth 61.8%

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: $1,687 AUD|Low: $438 AUD|High: $2,269 AUD|Avg: $1,128 AUD|+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
Reve Diamonds
November 2, 2026
Retailer 12$442 AUD
Retailer 6$495 AUD
Retailer 9$544 AUD
Retailer 18$549 AUD
Retailer 11$641 AUD
Retailer 16$739 AUD
Retailer 17$771 AUD
Retailer 14$946 AUD
Retailer 10$948 AUD
Retailer 13$977 AUD
Retailer 3$1,010 AUD
Retailer 7$1,268 AUD
Retailer 8$1,571 AUD
Retailer 1$1,687 AUD
Retailer 2$1,764 AUD
Retailer 5$1,830 AUD
Retailer 4$2,109 AUD
Retailer 15$2,200 AUD
Reve Diamonds$2,205 AUD

28 data points across 19 retailers

19 retailers$442 AUD to $2,205 AUD

A
Cheapest Retailer
-
$442 AUD
$310 USD
A
Retailer 2
-
$495 AUD
$347 USD
View
Final sale: no returns
Retailer 3
-
$544 AUD
$381 USD
View
Price last confirmed 8 days ago
A
Retailer 4
-
$549 AUD
$385 USD
View
A
Retailer 5
-
$641 AUD
£354 GBP
View
B+
Retailer 6
-
$739 AUD
$518 USD
View
A
Retailer 7
-
$771 AUD
$540 USD
View
A
Retailer 8
-
$946 AUD
ZAR 10,714 ZAR
View
A
Retailer 9
-
$977 AUD
£539 GBP
View
A
Retailer 10
-
$1,010 AUD
$708 USD
View
A
Retailer 11
-
$1,268 AUD
View
Retailer 12
-
$1,571 AUD
View
Price last confirmed 8 days ago
B
Retailer 13
-
$1,687 AUD
$1,182 USD
View
B+
Retailer 14
-
$1,764 AUD
$1,236 USD
View
Retailer 15
-
$1,805 AUD
$1,265 USD
View
B+
Retailer 16
-
$1,830 AUD
$1,283 USD
View
B
Retailer 17
-
$2,109 AUD
$1,478 USD
View
B
Retailer 18
-
$2,200 AUD
£1,214 GBP
View
Most Expensive
B
Reve Diamonds
8EE645827 · Nov 1
$2,205 AUD
$1,545 USD
View
18 more retailers have this diamond
Prices start from $442 AUDSave up to $1,762 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
$442 AUD