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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 $283 USD
As of November 2, 2026
Save $1,197 USD (81%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $1,480 USD 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 $283 to $1,480, a $1,197 spread on the same certified stone. With Clarity lists it at $1,480. 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
Color
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

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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: $917 USD|Low: $283 USD|High: $1,495 USD|Avg: $786 USD|-7.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
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Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
With Clarity
November 2, 2026
Retailer 10$283 USD
Retailer 11$316 USD
Retailer 7$329 USD
Retailer 4$351 USD
Retailer 6$351 USD
Retailer 12$411 USD
Retailer 2$510 USD
Retailer 20$579 USD
Retailer 16$606 USD
Retailer 15$615 USD
Retailer 8$697 USD
Retailer 18$698 USD
Retailer 19$817 USD
Retailer 1$917 USD
Retailer 3$1,087 USD
Retailer 13$1,128 USD
Retailer 5$1,129 USD
Retailer 9$1,180 USD
Retailer 21$1,235 USD
Retailer 14$1,351 USD
Retailer 17$1,407 USD
With Clarity$1,480 USD

21 data points across 22 retailers

22 retailers$283 USD to $1,480 USD

A
Cheapest Retailer
-
$283 USD
A
Retailer 2
-
$316 USD
View
Final sale: no returns
A
Retailer 3
-
$329 USD
View
Retailer 4
-
$351 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
$351 USD
View
A
Retailer 6
-
$411 USD
£323 GBP
View
A
Retailer 7
-
$510 USD
View
A
Retailer 8
-
$579 USD
View
A
Retailer 9
-
$606 USD
ZAR 9,785 ZAR
View
A
Retailer 10
-
$615 USD
£484 GBP
View
A
Retailer 11
-
$697 USD
View
A
Retailer 12
-
$698 USD
View
A
Retailer 13
-
$817 USD
A$1,257 AUD
View
A
Retailer 14
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$917 USD
View
Retailer 15
-
$1,087 USD
A$1,672 AUD
View
Price last confirmed 8 days ago
B+
Retailer 16
-
$1,128 USD
SGD 1,524 SGD
View
B+
Retailer 17
-
$1,129 USD
View
B+
Retailer 18
-
$1,180 USD
View
B+
Retailer 19
-
$1,235 USD
View
B+
Retailer 20
-
$1,351 USD
View
B+
Retailer 21
-
$1,407 USD
£1,108 GBP
View
Most Expensive
B
With Clarity
825654747 · Nov 1
$1,480 USD
View
21 more retailers have this diamond
Prices start from $283 USDSave up to $1,197 USD

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
$283 USD