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Radiant|Lab Grown|IGI

4.78ct G VS1 Radiant Lab Grown Diamond

ID • G/VS1 • IGI LG831678037

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG831678037

Diamond specifications and retailer prices

From $861 AUD
$605 USD
As of October 27, 2026
Save $5,089 AUD (86%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $5,951 AUD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 4.78ct lab-grown radiant diamond

This 4.78ct lab-grown radiant sits in the three to five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG831678037 or 831678037. Listed at 15 retailers as of October 27, 2026, with prices from $861 to $5,951, a $5,089 spread on the same certified stone. Brilliant Earth lists it at $5,951. 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
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.1°
Pavilion angle35.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831678037
Dimensions11.74 × 8.35 × 5.67 mm
L/W Ratio1.41
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.74 mm8.35 mm4.78 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831678037
Side View
Table 68.0%Crown 44.1°Girdle: ThickPavilion 35.6°Culet: NoneDepth 67.9%

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: Oct 27
Current: $5,951 AUD|Low: $827 AUD|High: $6,008 AUD|Avg: $2,666 AUD|-0.9%
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
October 31, 2026
Retailer 7$861 AUD
Retailer 4$951 AUD
Retailer 9$1,002 AUD
Retailer 10$1,239 AUD
Retailer 3$1,412 AUD
Retailer 2$1,622 AUD
Retailer 5$2,153 AUD
Retailer 8$2,234 AUD
Retailer 15$2,454 AUD
Retailer 12$2,770 AUD
Retailer 13$3,193 AUD
Retailer 6$4,420 AUD
Retailer 11$4,596 AUD
Retailer 14$4,645 AUD
Brilliant Earth$5,951 AUD

32 data points across 15 retailers

15 retailers$861 AUD to $5,951 AUD

A
Cheapest Retailer
-
$861 AUD
$605 USD
A
Retailer 2
-
$951 AUD
$668 USD
View
A
Retailer 3
-
$1,002 AUD
$704 USD
View
Final sale: no returns
A
Retailer 4
-
$1,239 AUD
$870 USD
View
B+
Retailer 5
-
$1,412 AUD
$992 USD
View
A
Retailer 6
-
$1,622 AUD
€1,085 EUR
View
Retailer 7
-
$2,153 AUD
View
Price last confirmed 12 days ago
A
Retailer 8
-
$2,234 AUD
$1,569 USD
View
A
Retailer 9
-
$2,454 AUD
$1,724 USD
View
B+
Retailer 10
-
$2,770 AUD
$1,946 USD
View
B+
Retailer 11
-
$3,193 AUD
$2,243 USD
View
B
Retailer 12
-
$4,420 AUD
$3,105 USD
View
B+
Retailer 13
-
$4,596 AUD
£2,542 GBP
View
B
Retailer 14
-
$4,645 AUD
$3,263 USD
View
Most Expensive
B
Brilliant Earth
21304716A · Oct 31
$5,951 AUD
$4,180 USD
View
14 more retailers have this diamond
Prices start from $861 AUDSave up to $5,089 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 Radiant
$861 AUD