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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 $915 AUD
$643 USD
As of October 31, 2026
Save $6,737 AUD (88%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $7,653 AUD 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 $915 to $7,653, a $6,737 spread on the same certified stone. Frank Darling lists it at $7,653. 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
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.8°
Pavilion angle35.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG774634791
Dimensions11.01 × 7.80 × 5.25 mm
L/W Ratio1.41
Culet sizePointed
Top View
11.01 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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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $7,653 AUD|Low: $611 AUD|High: $8,100 AUD|Avg: $3,452 AUD|-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$915 AUD
Retailer 12$954 AUD
Retailer 8$1,264 AUD
Retailer 4$1,342 AUD
Retailer 11$1,600 AUD
Retailer 6$2,265 AUD
Retailer 5$2,266 AUD
Retailer 15$2,842 AUD
Retailer 3$3,212 AUD
Retailer 10$3,397 AUD
Retailer 13$3,557 AUD
Retailer 9$5,303 AUD
Retailer 14$6,805 AUD
Frank Darling$7,653 AUD
Retailer 7$8,100 AUD

17 data points across 15 retailers

5 retailers$915 AUD to $7,653 AUD

A
Cheapest Retailer
-
$915 AUD
$643 USD
Final sale: no returns
B+
Retailer 2
-
$1,264 AUD
$888 USD
View
Retailer 3
-
$3,397 AUD
$2,386 USD
View
Price last confirmed 26 days ago
Retailer 4
-
$5,303 AUD
$3,725 USD
View
Price last confirmed 12 days ago
Most Expensive
B
Frank Darling
100751875740KD · Oct 29
$7,653 AUD
$5,375 USD
View
4 more retailers have this diamond
Prices start from $915 AUDSave up to $6,737 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
3.90ct Radiant
$915 AUD