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Radiant|Lab Grown|IGI

3.91ct D VS1 Radiant Lab Grown Diamond

EX • D/VS1 • IGI LG777614739

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

Certificate IGI LG777614739

Diamond specifications and retailer prices

From $918 AUD
$645 USD
As of October 29, 2026
Save $6,754 AUD (88%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $7,672 AUD at Frank Darling · As of October 28, 2026
View at Frank Darling

About this 3.91ct lab-grown radiant diamond

This 3.91ct 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 LG777614739 or 777614739. Listed at 6 retailers as of October 28, 2026, with prices from $918 to $7,672, a $6,754 spread on the same certified stone. Frank Darling lists it at $7,672. 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

3.91
Carat
D
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.4°
Pavilion angle35.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG777614739
Dimensions10.81 × 7.86 × 5.35 mm
L/W Ratio1.38
Culet sizePointed
Top View
10.81 mm7.86 mm3.91 ctD / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG777614739
Side View
Table 66.0%Crown 44.4°Girdle: Slightly ThickPavilion 35.5°Culet: NoneDepth 68.1%

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 29
Current: $7,672 AUD|Low: $612 AUD|High: $8,613 AUD|Avg: $3,509 AUD|-0.0%
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 28, 2026
Retailer 2$918 AUD
Retailer 11$1,146 AUD
Retailer 8$1,267 AUD
Retailer 14$1,345 AUD
Retailer 12$1,604 AUD
Retailer 6$2,269 AUD
Retailer 15$2,907 AUD
Retailer 3$3,098 AUD
Retailer 4$3,246 AUD
Retailer 10$3,405 AUD
Retailer 7$4,438 AUD
Retailer 9$5,303 AUD
Retailer 13$6,819 AUD
Frank Darling$7,672 AUD
Retailer 5$8,613 AUD

17 data points across 15 retailers

6 retailers$918 AUD to $7,672 AUD

A
Cheapest Retailer
-
$918 AUD
$645 USD
Final sale: no returns
B+
Retailer 2
-
$1,267 AUD
$890 USD
View
Retailer 3
-
$3,405 AUD
$2,392 USD
View
Price last confirmed 25 days ago
Retailer 4
-
$4,438 AUD
View
Price last confirmed 118 days ago
Retailer 5
-
$5,303 AUD
$3,725 USD
View
Price last confirmed 11 days ago
Most Expensive
B
Frank Darling
100752997414KD · Oct 28
$7,672 AUD
$5,389 USD
View
5 more retailers have this diamond
Prices start from $918 AUDSave up to $6,754 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
3.91ct Radiant
$918 AUD