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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 $1,144 NZD
$645 USD
As of October 31, 2026
Save $8,418 NZD (88%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $9,562 NZD 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 $1,144 to $9,562, a $8,418 spread on the same certified stone. Frank Darling lists it at $9,562. 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 31
Current: $9,562 NZD|Low: $691 NZD|High: $10,735 NZD|Avg: $4,137 NZD|-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
Retailer 16
October 28, 2026
Retailer 5$691 NZD
Retailer 2$1,144 NZD
Retailer 12$1,428 NZD
Retailer 9$1,579 NZD
Retailer 15$1,677 NZD
Retailer 13$1,999 NZD
Retailer 7$2,828 NZD
Retailer 16$3,623 NZD
Retailer 3$3,861 NZD
Retailer 4$4,046 NZD
Retailer 11$4,244 NZD
Retailer 8$5,531 NZD
Retailer 10$6,609 NZD
Retailer 14$8,499 NZD
Frank Darling$9,562 NZD
Retailer 6$10,735 NZD

17 data points across 16 retailers

6 retailers$1,144 NZD to $9,562 NZD

A
Cheapest Retailer
-
$1,144 NZD
$645 USD
Final sale: no returns
B+
Retailer 2
-
$1,579 NZD
$890 USD
View
Retailer 3
-
$4,244 NZD
$2,392 USD
View
Price last confirmed 26 days ago
Retailer 4
-
$5,531 NZD
A$4,796 AUD
View
Price last confirmed 119 days ago
Retailer 5
-
$6,609 NZD
$3,725 USD
View
Price last confirmed 12 days ago
Most Expensive
B
Frank Darling
100752997414KD · Oct 28
$9,562 NZD
$5,389 USD
View
5 more retailers have this diamond
Prices start from $1,144 NZDSave up to $8,418 NZD

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
$1,144 NZD