Radiant|Lab Grown|IGI

3.91ct D VS1 Radiant Lab Grown Diamond

ID • D/VS1 • IGI LG669435205

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

Certificate IGI LG669435205

Diamond specifications and retailer prices

From HK$6,606 HKD

$842 USD

As of October 30, 2026

Save HK$34,113 HKD (84%) vs most expensive(unlock to see where)

30 retailers carry this diamond

Most expensive: HK$40,719 HKD at Brilliant Earth · As of October 30, 2026

View at Brilliant Earth

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 LG669435205 or 669435205. Listed at 30 retailers as of October 30, 2026, with prices from HK$6,606 to HK$40,719, a HK$34,113 spread on the same certified stone. Brilliant Earth lists it at HK$40,719. 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

Colour

VS1

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle50.7°

Pavilion angle29.2°

OriginLab Grown

Grading LabIGI

CertificateIGI LG669435205

Dimensions10.23 × 7.20 × 5.17 mm

L/W Ratio1.42

Culet sizePointed

Cert comments

This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa

View IGI Report →View Loupe360 Video →

Top View

OriginLab Grown

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG669435205

Side View

Caratlytics Score

How it works →

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 30

Current: HK$40,719 HKD|Low: HK$6,347 HKD|High: HK$43,387 HKD|Avg: HK$17,339 HKD|-6.1%

Brilliant Earth

Retailer 2

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Retailer 25

October 31, 2026

Retailer 3HK$6,606 HKD

Retailer 25HK$7,195 HKD

Retailer 7HK$7,391 HKD

Retailer 8HK$7,665 HKD

Retailer 12HK$7,665 HKD

Retailer 15HK$8,938 HKD

Retailer 21HK$9,062 HKD

Retailer 10HK$10,239 HKD

Retailer 22HK$10,984 HKD

Retailer 2HK$11,683 HKD

Retailer 23HK$12,159 HKD

Retailer 13HK$15,676 HKD

Retailer 5HK$16,821 HKD

Retailer 24HK$17,298 HKD

Retailer 19HK$17,802 HKD

Retailer 16HK$18,627 HKD

Retailer 17HK$21,164 HKD

Retailer 6HK$21,552 HKD

Retailer 11HK$24,157 HKD

Retailer 4HK$24,907 HKD

Retailer 9HK$25,448 HKD

Retailer 14HK$25,778 HKD

Retailer 18HK$26,571 HKD

Retailer 20HK$28,896 HKD

Brilliant EarthHK$40,719 HKD

30 data points across 25 retailers

30 retailersHK$6,606 HKD to HK$40,719 HKD

Cheapest Retailer

HK$6,606 HKD

$842 USD

Retailer 2

HK$7,195 HKD

$917 USD

View

Retailer 3

HK$7,391 HKD

$942 USD

View

Final sale: no returns

Retailer 4

HK$7,665 HKD

$977 USD

View

Retailer 5

HK$7,665 HKD

$977 USD

View

Price last confirmed 14 days ago

Retailer 6

HK$8,938 HKD

View

Retailer 7

HK$9,062 HKD

$1,155 USD

View

Retailer 8

HK$10,239 HKD

$1,305 USD

View

Retailer 9

HK$10,984 HKD

$1,400 USD

View

Retailer 10

HK$11,683 HKD

£1,173 GBP

View

Retailer 11

HK$12,159 HKD

€1,476 EUR

View

Price last confirmed 7 days ago

B+

Retailer 12

HK$15,676 HKD

$1,998 USD

View

B+

Retailer 13

HK$16,107 HKD

$2,053 USD

View

B+

Retailer 14

HK$16,821 HKD

$2,144 USD

View

Retailer 15

HK$17,298 HKD

A$3,392 AUD

View

Price last confirmed 9 days ago

B+

Retailer 16

HK$17,802 HKD

ZAR 36,656 ZAR

View

B+

Retailer 17

HK$18,627 HKD

$2,374 USD

View

B+

Retailer 18

HK$18,775 HKD

£1,884 GBP

View

B+

Retailer 19

HK$21,164 HKD

£2,124 GBP

View

B+

Retailer 20

HK$21,552 HKD

$2,747 USD

View

B+

Retailer 21

HK$22,862 HKD

$2,914 USD

View

Retailer 22

HK$24,157 HKD

$3,079 USD

View

Retailer 23

HK$24,907 HKD

A$4,884 AUD

View

Price last confirmed 23 days ago

Retailer 24

HK$25,448 HKD

$3,244 USD

View

Retailer 25

HK$25,778 HKD

SGD 4,440 SGD

View

Retailer 26

HK$26,571 HKD

$3,387 USD

View

Retailer 27

HK$27,507 HKD

$3,506 USD

View

Retailer 28

HK$28,896 HKD

£2,900 GBP

View

Retailer 29

HK$32,499 HKD

$4,142 USD

View

Price last confirmed 67 days ago

Most Expensive

Brilliant Earth

12469047A · Oct 30

HK$40,719 HKD

$5,190 USD

View

29 more retailers have this diamond

Prices start from HK$6,606 HKDSave up to HK$34,113 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.

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