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Marquise|Lab Grown|IGI

1.78ct F VS1 Marquise Lab Grown Diamond

EX • F/VS1 • IGI LG762573614

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG762573614

Diamond specifications and retailer prices

From $408 AUD
$286 USD
As of November 2, 2026
Save $1,846 AUD (82%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $2,255 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 VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG762573614 or 762573614. Listed at 22 retailers as of November 2, 2026, with prices from $408 to $2,255, a $1,846 spread on the same certified stone. Brilliant Earth lists it at $2,255. 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 angle32.2°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG762573614
Dimensions12.87 × 6.36 × 3.84 mm
L/W Ratio2.02
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.87 mm6.36 mm1.78 ctF / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG762573614
Side View
Table 59.0%Crown 32.2°Girdle: MED-THKPavilion 40.3°Culet: NoneDepth 60.4%

Caratlytics Score

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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: $2,255 AUD|Low: $392 AUD|High: $2,383 AUD|Avg: $1,125 AUD|-5.4%
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
November 2, 2026
Retailer 17$408 AUD
Retailer 7$474 AUD
Retailer 3$507 AUD
Retailer 8$507 AUD
Retailer 4$594 AUD
Retailer 15$728 AUD
Retailer 10$872 AUD
Retailer 2$887 AUD
Retailer 16$900 AUD
Retailer 13$926 AUD
Retailer 14$1,177 AUD
Retailer 11$1,541 AUD
Retailer 6$1,554 AUD
Retailer 5$1,627 AUD
Retailer 9$1,946 AUD
Retailer 12$2,039 AUD
Brilliant Earth$2,255 AUD

35 data points across 17 retailers

22 retailers$408 AUD to $2,255 AUD

A
Cheapest Retailer
-
$408 AUD
$286 USD
A
Retailer 2
-
$474 AUD
$332 USD
View
Retailer 3
-
$507 AUD
$355 USD
View
Price last confirmed 8 days ago
A
Retailer 4
-
$507 AUD
$355 USD
View
Retailer 5
-
$594 AUD
£328 GBP
View
Price last confirmed 16 days ago
B+
Retailer 6
-
$682 AUD
$478 USD
View
A
Retailer 7
-
$728 AUD
$510 USD
View
A
Retailer 8
-
$872 AUD
ZAR 9,878 ZAR
View
A
Retailer 9
-
$887 AUD
£489 GBP
View
Retailer 10
-
$900 AUD
€601 EUR
View
Price last confirmed 8 days ago
A
Retailer 11
-
$926 AUD
View
A
Retailer 12
-
$996 AUD
$698 USD
View
A
Retailer 13
-
$1,000 AUD
$701 USD
View
A
Retailer 14
-
$1,177 AUD
View
B+
Retailer 15
-
$1,541 AUD
View
B+
Retailer 16
-
$1,554 AUD
$1,089 USD
View
B+
Retailer 17
-
$1,627 AUD
$1,140 USD
View
B+
Retailer 18
-
$1,697 AUD
$1,189 USD
View
B
Retailer 19
-
$1,946 AUD
$1,364 USD
View
B+
Retailer 20
-
$2,039 AUD
£1,125 GBP
View
B
Retailer 21
-
$2,113 AUD
$1,481 USD
View
Most Expensive
B
Brilliant Earth
20624835A · Nov 2
$2,255 AUD
$1,580 USD
View
21 more retailers have this diamond
Prices start from $408 AUDSave up to $1,846 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
$408 AUD