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 $1,199 AUD

$842 USD

As of October 30, 2026

Save $6,190 AUD (84%) vs most expensive(unlock to see where)

29 retailers carry this diamond

Most expensive: $7,388 AUD 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 29 retailers as of October 30, 2026, with prices from $1,199 to $7,388, a $6,190 spread on the same certified stone. Brilliant Earth lists it at $7,388. 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: $7,388 AUD|Low: $1,152 AUD|High: $7,873 AUD|Avg: $3,151 AUD|-6.1%

Brilliant Earth

Retailer 2

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October 30, 2026

Retailer 3$1,199 AUD

Retailer 25$1,305 AUD

Retailer 7$1,341 AUD

Retailer 8$1,391 AUD

Retailer 12$1,391 AUD

Retailer 15$1,622 AUD

Retailer 20$1,644 AUD

Retailer 10$1,858 AUD

Retailer 21$1,993 AUD

Retailer 2$2,138 AUD

Retailer 22$2,206 AUD

Retailer 24$2,923 AUD

Retailer 5$3,052 AUD

Retailer 23$3,139 AUD

Retailer 13$3,230 AUD

Retailer 16$3,380 AUD

Retailer 17$3,840 AUD

Retailer 6$3,911 AUD

Retailer 11$4,383 AUD

Retailer 4$4,519 AUD

Retailer 9$4,618 AUD

Retailer 14$4,677 AUD

Retailer 18$4,821 AUD

Retailer 19$5,243 AUD

Brilliant Earth$7,388 AUD

29 data points across 25 retailers

29 retailers$1,199 AUD to $7,388 AUD

Cheapest Retailer

$1,199 AUD

$842 USD

Retailer 2

$1,305 AUD

$917 USD

View

Retailer 3

$1,341 AUD

$942 USD

View

Final sale: no returns

Retailer 4

$1,391 AUD

$977 USD

View

Retailer 5

$1,391 AUD

$977 USD

View

Price last confirmed 13 days ago

Retailer 6

$1,622 AUD

HK$8,900 HKD

View

Retailer 7

$1,644 AUD

$1,155 USD

View

Retailer 8

$1,858 AUD

$1,305 USD

View

Retailer 9

$1,993 AUD

$1,400 USD

View

Retailer 10

$2,138 AUD

£1,182 GBP

View

Retailer 11

$2,206 AUD

€1,476 EUR

View

Price last confirmed 7 days ago

B+

Retailer 12

$2,923 AUD

$2,053 USD

View

B+

Retailer 13

$3,052 AUD

$2,144 USD

View

Retailer 14

$3,139 AUD

View

Price last confirmed 9 days ago

B+

Retailer 15

$3,230 AUD

ZAR 36,656 ZAR

View

B+

Retailer 16

$3,380 AUD

$2,374 USD

View

B+

Retailer 17

$3,407 AUD

£1,884 GBP

View

B+

Retailer 18

$3,840 AUD

£2,124 GBP

View

B+

Retailer 19

$3,911 AUD

$2,747 USD

View

B+

Retailer 20

$4,148 AUD

$2,914 USD

View

Retailer 21

$4,383 AUD

$3,079 USD

View

Retailer 22

$4,519 AUD

View

Price last confirmed 22 days ago

Retailer 23

$4,618 AUD

$3,244 USD

View

Retailer 24

$4,677 AUD

SGD 4,440 SGD

View

Retailer 25

$4,821 AUD

$3,387 USD

View

Retailer 26

$4,991 AUD

$3,506 USD

View

Retailer 27

$5,243 AUD

£2,900 GBP

View

Retailer 28

$5,897 AUD

$4,142 USD

View

Price last confirmed 67 days ago

Most Expensive

Brilliant Earth

12469047A · Oct 30

$7,388 AUD

$5,190 USD

View

28 more retailers have this diamond

Prices start from $1,199 AUDSave up to $6,190 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.

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