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 €542 EUR
$605 USD
As of October 27, 2026
Save €3,200 EUR (86%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €3,741 EUR at Brilliant Earth · As of October 29, 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 €542 to €3,741, a €3,200 spread on the same certified stone. Brilliant Earth lists it at €3,741. 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
Color
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

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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: Oct 27
Current: €3,741 EUR|Low: €520 EUR|High: €3,777 EUR|Avg: €1,676 EUR|-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€542 EUR
Retailer 4€598 EUR
Retailer 9€630 EUR
Retailer 10€779 EUR
Retailer 3€888 EUR
Retailer 2€1,020 EUR
Retailer 5€1,354 EUR
Retailer 8€1,404 EUR
Retailer 15€1,543 EUR
Retailer 12€1,742 EUR
Retailer 13€2,008 EUR
Retailer 6€2,779 EUR
Retailer 11€2,890 EUR
Retailer 14€2,921 EUR
Brilliant Earth€3,741 EUR

32 data points across 15 retailers

15 retailers€542 EUR to €3,741 EUR

A
Cheapest Retailer
-
€542 EUR
$605 USD
A
Retailer 2
-
€598 EUR
$668 USD
View
A
Retailer 3
-
€630 EUR
$704 USD
View
Final sale: no returns
A
Retailer 4
-
€779 EUR
$870 USD
View
B+
Retailer 5
-
€888 EUR
$992 USD
View
A
Retailer 6
-
€1,020 EUR
View
Retailer 7
-
€1,354 EUR
A$2,327 AUD
View
Price last confirmed 11 days ago
A
Retailer 8
-
€1,404 EUR
$1,569 USD
View
A
Retailer 9
-
€1,543 EUR
$1,724 USD
View
B+
Retailer 10
-
€1,742 EUR
$1,946 USD
View
B+
Retailer 11
-
€2,008 EUR
$2,243 USD
View
B
Retailer 12
-
€2,779 EUR
$3,105 USD
View
B+
Retailer 13
-
€2,890 EUR
£2,542 GBP
View
B
Retailer 14
-
€2,921 EUR
$3,263 USD
View
Most Expensive
B
Brilliant Earth
21304716A · Oct 29
€3,741 EUR
$4,180 USD
View
14 more retailers have this diamond
Prices start from €542 EURSave up to €3,200 EUR

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
€542 EUR