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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 $2,339 AUD
$1,639 USD
As of October 30, 2026
Save $1,093 AUD (32%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $3,432 AUD at Friendly Diamonds · As of November 2, 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 $2,339 to $3,432, a $1,093 spread on the same certified stone. Friendly Diamonds lists it at $3,432. 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
Colour
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

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: $3,432 AUD|Low: $2,339 AUD|High: $13,070 AUD|Avg: $6,032 AUD|-9.9%
Friendly Diamonds
Retailer 2
Retailer 3
Retailer 4
November 2, 2026
Retailer 3$2,339 AUD
Friendly Diamonds$3,432 AUD
Retailer 4$7,363 AUD
Retailer 2$10,259 AUD

5 data points across 4 retailers

2 retailers$2,339 AUD to $3,432 AUD

A
Cheapest Retailer
-
$2,339 AUD
$1,639 USD
Most Expensive
B+
Friendly Diamonds
4004261 · Nov 2
$3,432 AUD
$2,405 USD
View
1 more retailer has this diamond
Prices start from $2,339 AUDSave up to $1,093 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
4.78ct Cushion
$2,339 AUD