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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 $1,073 NZD
$605 USD
As of October 27, 2026
Save $6,343 NZD (86%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $7,417 NZD 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 $1,073 to $7,417, a $6,343 spread on the same certified stone. Brilliant Earth lists it at $7,417. 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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 27
Current: $7,417 NZD|Low: $1,031 NZD|High: $7,488 NZD|Avg: $3,321 NZD|-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
November 1, 2026
Retailer 7$1,073 NZD
Retailer 4$1,185 NZD
Retailer 10$1,249 NZD
Retailer 11$1,544 NZD
Retailer 3$1,760 NZD
Retailer 8$2,021 NZD
Retailer 5$2,684 NZD
Retailer 9$2,784 NZD
Retailer 15$3,059 NZD
Retailer 12$3,453 NZD
Retailer 13$3,980 NZD
Retailer 6$5,509 NZD
Retailer 2$5,699 NZD
Retailer 14$5,790 NZD
Brilliant Earth$7,417 NZD

33 data points across 15 retailers

15 retailers$1,073 NZD to $7,417 NZD

A
Cheapest Retailer
-
$1,073 NZD
$605 USD
A
Retailer 2
-
$1,185 NZD
$668 USD
View
A
Retailer 3
-
$1,249 NZD
$704 USD
View
Final sale: no returns
A
Retailer 4
-
$1,544 NZD
$870 USD
View
B+
Retailer 5
-
$1,760 NZD
$992 USD
View
A
Retailer 6
-
$2,021 NZD
€1,085 EUR
View
Retailer 7
-
$2,684 NZD
A$2,327 AUD
View
Price last confirmed 12 days ago
A
Retailer 8
-
$2,784 NZD
$1,569 USD
View
A
Retailer 9
-
$3,059 NZD
$1,724 USD
View
B+
Retailer 10
-
$3,453 NZD
$1,946 USD
View
B+
Retailer 11
-
$3,980 NZD
$2,243 USD
View
B
Retailer 12
-
$5,509 NZD
$3,105 USD
View
B
Retailer 13
-
$5,699 NZD
£2,529 GBP
View
B
Retailer 14
-
$5,790 NZD
$3,263 USD
View
Most Expensive
B
Brilliant Earth
21304716A · Oct 31
$7,417 NZD
$4,180 USD
View
14 more retailers have this diamond
Prices start from $1,073 NZDSave up to $6,343 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
4.78ct Radiant
$1,073 NZD