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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 HK$5,060 HKD
$645 USD
As of October 29, 2026
Save HK$37,222 HKD (88%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: HK$42,283 HKD 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 HK$5,060 to HK$42,283, a HK$37,222 spread on the same certified stone. Frank Darling lists it at HK$42,283. 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: HK$42,283 HKD|Low: HK$3,374 HKD|High: HK$47,466 HKD|Avg: HK$19,339 HKD|-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 2HK$5,060 HKD
Retailer 11HK$6,316 HKD
Retailer 8HK$6,983 HKD
Retailer 14HK$7,414 HKD
Retailer 12HK$8,839 HKD
Retailer 6HK$12,506 HKD
Retailer 15HK$16,021 HKD
Retailer 3HK$17,073 HKD
Retailer 4HK$17,890 HKD
Retailer 10HK$18,767 HKD
Retailer 7HK$24,458 HKD
Retailer 9HK$29,225 HKD
Retailer 13HK$37,581 HKD
Frank DarlingHK$42,283 HKD
Retailer 5HK$47,466 HKD

17 data points across 15 retailers

6 retailersHK$5,060 HKD to HK$42,283 HKD

A
Cheapest Retailer
-
HK$5,060 HKD
$645 USD
Final sale: no returns
B+
Retailer 2
-
HK$6,983 HKD
$890 USD
View
Retailer 3
-
HK$18,767 HKD
$2,392 USD
View
Price last confirmed 25 days ago
Retailer 4
-
HK$24,458 HKD
A$4,796 AUD
View
Price last confirmed 119 days ago
Retailer 5
-
HK$29,225 HKD
$3,725 USD
View
Price last confirmed 12 days ago
Most Expensive
B
Frank Darling
100752997414KD · Oct 28
HK$42,283 HKD
$5,389 USD
View
5 more retailers have this diamond
Prices start from HK$5,060 HKDSave up to HK$37,222 HKD

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
HK$5,060 HKD