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Radiant|Lab Grown|IGI

3.91ct D VS1 Radiant Lab Grown Diamond

ID • D/VS1

Diamond specifications and retailer prices

From $1,018 AUD
$715 USD
As of October 30, 2026
Save $4,726 AUD (82%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $5,744 AUD at The Diamond Guys · As of October 30, 2026
View at The Diamond Guys

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. Listed at 8 retailers as of October 30, 2026, with prices from $1,018 to $5,744, a $4,726 spread on the same certified stone. The Diamond Guys lists it at $5,744. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
Dimensions11.00 × 7.89 × 5.26 mm
L/W Ratio1.39
Top View
11.00 mm7.89 mm3.91 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI
Side View
Table 68.0%CrownGirdle: MediumPavilionCulet: NoneDepth 66.7%

Caratlytics Score

How it works →
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 30
Current: $1,750 AUD|Low: $1,018 AUD|High: $6,234 AUD|Avg: $2,705 AUD|-6.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
The Diamond Guys
October 30, 2026
Retailer 6$1,018 AUD
Retailer 5$1,108 AUD
Retailer 3$1,415 AUD
Retailer 1$1,750 AUD
Retailer 7$2,227 AUD
Retailer 2$3,257 AUD
Retailer 4$3,664 AUD
The Diamond Guys$5,744 AUD

32 data points across 8 retailers

8 retailers$1,018 AUD to $5,744 AUD

A
Cheapest Retailer
-
$1,018 AUD
$715 USD
A
Retailer 2
-
$1,108 AUD
$778 USD
View
A
Retailer 3
-
$1,415 AUD
$994 USD
View
A
Retailer 4
-
$1,750 AUD
£968 GBP
View
Retailer 5
-
$2,227 AUD
$1,564 USD
View
Price last confirmed 16 days ago
B+
Retailer 6
-
$3,257 AUD
CA$3,178 CAD
View
B+
Retailer 7
-
$3,664 AUD
$2,574 USD
View
Most Expensive
B
The Diamond Guys
1920168594 · Oct 30
$5,744 AUD
$4,035 USD
View
7 more retailers have this diamond
Prices start from $1,018 AUDSave up to $4,726 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
$1,018 AUD