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Radiant|Lab Grown|IGI

3.90ct D VS1 Radiant Lab Grown Diamond

ID • D/VS1 • IGI LG762540392

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

Certificate IGI LG762540392

Diamond specifications and retailer prices

From $588 USD
As of October 29, 2026
Save $4,302 USD (88%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $4,890 USD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 3.9ct lab-grown radiant diamond

This 3.9ct lab-grown radiant sits in the three to five carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG762540392 or 762540392. Listed at 4 retailers as of October 29, 2026, with prices from $588 to $4,890, a $4,302 spread on the same certified stone. Brilliant Earth lists it at $4,890. 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

3.90
Carat
D
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46.3°
Pavilion angle35.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG762540392
Dimensions7.89 × 7.89 × 10.69 mm
L/W Ratio1.00
Culet sizePointed
Top View
7.89 mm7.89 mm3.90 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG762540392
Side View
Table 67.0%Crown 46.3°Girdle: Slightly ThickPavilion 35.4°Culet: NoneDepth 67.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 29
Current: $4,890 USD|Low: $430 USD|High: $5,030 USD|Avg: $1,880 USD|-2.8%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 4$588 USD
Retailer 6$805 USD
Retailer 8$832 USD
Retailer 7$946 USD
Retailer 3$1,010 USD
Retailer 2$1,060 USD
Retailer 9$2,032 USD
Retailer 10$2,174 USD
Retailer 11$2,278 USD
Retailer 5$3,950 USD
Brilliant Earth$4,890 USD

38 data points across 11 retailers

4 retailers$588 USD to $4,890 USD

A
Cheapest Retailer
-
$588 USD
Final sale: no returns
A
Retailer 2
-
$1,060 USD
£835 GBP
View
Retailer 3
-
$3,950 USD
View
Price last confirmed 32 days ago
Most Expensive
B
Brilliant Earth
17192827A · Oct 30
$4,890 USD
View
3 more retailers have this diamond
Prices start from $588 USDSave up to $4,302 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
3.90ct Radiant
$588 USD