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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 $571 NZD
$321 USD
As of November 1, 2026
Save $2,913 NZD (84%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $3,484 NZD 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 $571 to $3,484, a $2,913 spread on the same certified stone. Brilliant Earth lists it at $3,484. 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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $3,484 NZD|Low: $571 NZD|High: $3,839 NZD|Avg: $1,760 NZD|-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$571 NZD
Retailer 3$590 NZD
Retailer 4$853 NZD
Retailer 11$906 NZD
Retailer 18$1,087 NZD
Retailer 2$1,113 NZD
Retailer 8$1,168 NZD
Retailer 5$1,248 NZD
Retailer 9$1,487 NZD
Retailer 16$1,488 NZD
Retailer 15$1,935 NZD
Retailer 17$2,025 NZD
Retailer 6$2,123 NZD
Retailer 14$2,435 NZD
Retailer 13$2,526 NZD
Retailer 12$2,632 NZD
Retailer 10$3,172 NZD
Brilliant Earth$3,484 NZD

19 data points across 18 retailers

19 retailers$571 NZD to $3,484 NZD

A
Cheapest Retailer
-
$571 NZD
$321 USD
Final sale: no returns
A
Retailer 2
-
$590 NZD
$332 USD
View
B+
Retailer 3
-
$853 NZD
$480 USD
View
A
Retailer 4
-
$906 NZD
$510 USD
View
A
Retailer 5
-
$1,087 NZD
ZAR 9,878 ZAR
View
A
Retailer 6
-
$1,113 NZD
£493 GBP
View
A
Retailer 7
-
$1,168 NZD
€626 EUR
View
A
Retailer 8
-
$1,248 NZD
$702 USD
View
B+
Retailer 9
-
$1,487 NZD
A$1,287 AUD
View
A
Retailer 10
-
$1,488 NZD
$837 USD
View
B
Retailer 11
-
$1,935 NZD
$1,089 USD
View
B+
Retailer 12
-
$2,025 NZD
SGD 1,540 SGD
View
B+
Retailer 13
-
$2,123 NZD
$1,194 USD
View
B
Retailer 14
-
$2,435 NZD
$1,370 USD
View
B
Retailer 15
-
$2,526 NZD
£1,119 GBP
View
B
Retailer 16
-
$2,632 NZD
$1,481 USD
View
Retailer 17
-
$2,643 NZD
A$2,288 AUD
View
Price last confirmed 29 days ago
B
Retailer 18
-
$3,172 NZD
$1,785 USD
View
Most Expensive
B
Brilliant Earth
18729050A · Nov 2
$3,484 NZD
$1,960 USD
View
18 more retailers have this diamond
Prices start from $571 NZDSave up to $2,913 NZD

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
$571 NZD