Radiant|Lab Grown|IGI

3.90ct D VS1 Radiant Lab Grown Diamond

EX • D/VS1 • IGI LG774634791

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

Certificate IGI LG774634791

Diamond specifications and retailer prices

From $643 USD
As of October 29, 2026
Save $4,732 USD (88%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $5,375 USD at Frank Darling · As of October 29, 2026
View at Frank Darling

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 LG774634791 or 774634791. Listed at 5 retailers as of October 29, 2026, with prices from $643 to $5,375, a $4,732 spread on the same certified stone. Frank Darling lists it at $5,375. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.8°
Pavilion angle35.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG774634791
Dimensions7.80 × 7.80 × 11.01 mm
L/W Ratio1.00
Culet sizePointed
Top View
7.80 mm7.80 mm3.90 ctD / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG774634791
Side View
Table 67.0%Crown 45.8°Girdle: MediumPavilion 35.6°Culet: NoneDepth 67.3%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 29
Current: $5,375 USD|Low: $429 USD|High: $5,690 USD|Avg: $2,425 USD|-5.4%
Frank Darling
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 27, 2026
Retailer 2$643 USD
Retailer 12$670 USD
Retailer 8$888 USD
Retailer 4$943 USD
Retailer 11$1,124 USD
Retailer 6$1,591 USD
Retailer 5$1,592 USD
Retailer 15$1,996 USD
Retailer 3$2,257 USD
Retailer 10$2,386 USD
Retailer 13$2,499 USD
Retailer 9$3,725 USD
Retailer 14$4,780 USD
Frank Darling$5,375 USD
Retailer 7$5,690 USD

17 data points across 15 retailers

5 retailers$643 USD to $5,375 USD

A
Cheapest Retailer
-
$643 USD
Final sale: no returns
B+
Retailer 2
-
$888 USD
View
Retailer 3
-
$2,386 USD
View
Price last confirmed 25 days ago
Retailer 4
-
$3,725 USD
View
Price last confirmed 11 days ago
Most Expensive
B
Frank Darling
100751875740KD · Oct 29
$5,375 USD
View
4 more retailers have this diamond
Prices start from $643 USDSave up to $4,732 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
$643 USD