CaratHunter
Plans
Marquise|Lab Grown|IGI

1.78ct F VS1 Marquise Lab Grown Diamond

ID • F/VS1 • IGI LG825654747

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG825654747

Diamond specifications and retailer prices

From $404 AUD
$283 USD
As of November 2, 2026
Save $1,708 AUD (81%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $2,112 AUD at With Clarity · As of November 1, 2026
View at With Clarity

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 LG825654747 or 825654747. Listed at 22 retailers as of November 1, 2026, with prices from $404 to $2,112, a $1,708 spread on the same certified stone. With Clarity lists it at $2,112. 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 angle32.3°
Pavilion angle39.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825654747
Dimensions12.37 × 6.44 × 3.87 mm
L/W Ratio1.92
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.37 mm6.44 mm1.78 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG825654747
Side View
Table 57.0%Crown 32.3°Girdle: MED-STKPavilion 39.3°Culet: NoneDepth 60.1%

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: $586 AUD|Low: $404 AUD|High: $2,133 AUD|Avg: $1,121 AUD|-3.1%
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
Retailer 19
Retailer 20
Retailer 21
With Clarity
November 2, 2026
Retailer 10$404 AUD
Retailer 11$451 AUD
Retailer 7$469 AUD
Retailer 4$501 AUD
Retailer 6$501 AUD
Retailer 1$586 AUD
Retailer 2$728 AUD
Retailer 20$826 AUD
Retailer 15$864 AUD
Retailer 12$877 AUD
Retailer 8$995 AUD
Retailer 18$996 AUD
Retailer 19$1,166 AUD
Retailer 17$1,296 AUD
Retailer 3$1,551 AUD
Retailer 13$1,609 AUD
Retailer 5$1,611 AUD
Retailer 9$1,683 AUD
Retailer 21$1,762 AUD
Retailer 14$1,928 AUD
Retailer 16$2,008 AUD
With Clarity$2,112 AUD

22 data points across 22 retailers

22 retailers$404 AUD to $2,112 AUD

A
Cheapest Retailer
-
$404 AUD
$283 USD
A
Retailer 2
-
$451 AUD
$316 USD
View
Final sale: no returns
A
Retailer 3
-
$469 AUD
$329 USD
View
Retailer 4
-
$501 AUD
$351 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
$501 AUD
$351 USD
View
A
Retailer 6
-
$586 AUD
£323 GBP
View
A
Retailer 7
-
$728 AUD
$510 USD
View
A
Retailer 8
-
$826 AUD
$579 USD
View
A
Retailer 9
-
$864 AUD
ZAR 9,785 ZAR
View
A
Retailer 10
-
$877 AUD
£484 GBP
View
A
Retailer 11
-
$995 AUD
$697 USD
View
A
Retailer 12
-
$996 AUD
$698 USD
View
A
Retailer 13
-
$1,166 AUD
View
A
Retailer 14
-
$1,296 AUD
$908 USD
View
Retailer 15
-
$1,551 AUD
View
Price last confirmed 7 days ago
B+
Retailer 16
-
$1,609 AUD
SGD 1,524 SGD
View
B+
Retailer 17
-
$1,611 AUD
$1,129 USD
View
B+
Retailer 18
-
$1,683 AUD
$1,180 USD
View
B+
Retailer 19
-
$1,762 AUD
$1,235 USD
View
B+
Retailer 20
-
$1,928 AUD
$1,351 USD
View
B+
Retailer 21
-
$2,008 AUD
£1,108 GBP
View
Most Expensive
B
With Clarity
825654747 · Nov 1
$2,112 AUD
$1,480 USD
View
21 more retailers have this diamond
Prices start from $404 AUDSave up to $1,708 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
$404 AUD