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Cushion|Lab Grown|IGI

4.78ct F VS1 Cushion Lab Grown Diamond

ID • F/VS1 • IGI LG598391354

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG598391354

Diamond specifications and retailer prices

From $1,639 USD
As of October 30, 2026
Save $736 USD (31%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $2,375 USD at Friendly Diamonds · As of October 31, 2026
View at Friendly Diamonds

About this 4.78ct lab-grown cushion diamond

This 4.78ct lab-grown cushion sits in the three to five carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG598391354 or 598391354. Listed at 2 retailers as of October 30, 2026, with prices from $1,639 to $2,375, a $736 spread on the same certified stone. Friendly Diamonds lists it at $2,375. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

4.78
Carat
F
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle38.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG598391354
Dimensions9.86 × 9.65 mm
L/W Ratio1.02
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
9.86 mm9.65 mm4.78 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG598391354
Side View
Table 62.0%Crown 35.7°Girdle: MED-STKPavilion 38.9°Culet: NoneDepth 66.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: $2,375 USD|Low: $1,639 USD|High: $9,160 USD|Avg: $4,259 USD|-11.0%
Friendly Diamonds
Retailer 2
Retailer 3
Retailer 4
October 16, 2026
Retailer 3$1,639 USD
Friendly Diamonds$2,375 USD
Retailer 4$5,160 USD
Retailer 2$7,190 USD

4 data points across 4 retailers

2 retailers$1,639 USD to $2,375 USD

A
Cheapest Retailer
-
$1,639 USD
Most Expensive
B+
Friendly Diamonds
4004261 · Oct 31
$2,375 USD
View
1 more retailer has this diamond
Prices start from $1,639 USDSave up to $736 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
4.78ct Cushion
$1,639 USD