Asscher|Lab Grown|IGI

4.21ct D FL Asscher Lab Grown Diamond

EX • D/FL • IGI LG831604048

Shape and cutting style on the report: Square emerald cut

Certificate IGI LG831604048

Diamond specifications and retailer prices

From $9,176 NZD

£4,072 GBP

As of November 1, 2026

Save $32,634 NZD (78%) vs most expensive(unlock to see where)

25 retailers carry this diamond

Most expensive: $41,810 NZD at With Clarity · As of October 31, 2026

View at With Clarity

About this 4.21ct lab-grown asscher diamond

This 4.21ct lab-grown asscher sits in the three to five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG831604048 or 831604048. Listed at 25 retailers as of October 31, 2026, with prices from $9,176 to $41,810, a $32,634 spread on the same certified stone. With Clarity lists it at $41,810. 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

4.21

Carat

Colour

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle35.3°

Pavilion angle41.6°

OriginLab Grown

Grading LabIGI

CertificateIGI LG831604048

Dimensions8.97 × 8.94 × 5.92 mm

L/W Ratio1.00

Cert comments

As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II

View IGI Report →View Loupe360 Video →

Top View

OriginLab Grown

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG831604048

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: Nov 1

Current: $22,416 NZD|Low: $9,063 NZD|High: $41,810 NZD|Avg: $16,815 NZD|-0.1%

Retailer 1

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

Retailer 17

Retailer 18

Retailer 19

Retailer 20

Retailer 21

Retailer 22

Retailer 23

With Clarity

November 1, 2026

Retailer 18$9,176 NZD

Retailer 16$9,384 NZD

Retailer 6$9,952 NZD

Retailer 21$10,101 NZD

Retailer 5$10,633 NZD

Retailer 19$11,017 NZD

Retailer 23$11,036 NZD

Retailer 4$11,563 NZD

Retailer 14$11,989 NZD

Retailer 20$13,078 NZD

Retailer 10$13,195 NZD

Retailer 22$14,125 NZD

Retailer 7$15,629 NZD

Retailer 15$15,915 NZD

Retailer 12$16,474 NZD

Retailer 13$17,885 NZD

Retailer 9$19,697 NZD

Retailer 1$22,416 NZD

Retailer 11$23,167 NZD

Retailer 2$25,550 NZD

Retailer 17$30,637 NZD

Retailer 8$38,174 NZD

Retailer 3$39,174 NZD

With Clarity$41,810 NZD

26 data points across 24 retailers

25 retailers$9,176 NZD to $41,810 NZD

Cheapest Retailer

$9,176 NZD

£4,072 GBP

Retailer 2

$9,384 NZD

$5,289 USD

View

Retailer 3

$9,952 NZD

$5,609 USD

View

Retailer 4

$10,101 NZD

$5,693 USD

View

Retailer 5

$10,633 NZD

$5,993 USD

View

Final sale: no returns

Retailer 6

$10,885 NZD

$6,135 USD

View

Price last confirmed 16 days ago

Retailer 7

$11,017 NZD

$6,209 USD

View

Retailer 8

$11,036 NZD

$6,220 USD

View

Retailer 9

$11,563 NZD

$6,517 USD

View

Retailer 10

$11,989 NZD

$6,757 USD

View

Retailer 11

$13,078 NZD

$7,371 USD

View

Retailer 12

$13,195 NZD

HK$58,100 HKD

View

Retailer 13

$14,125 NZD

£6,268 GBP

View

B+

Retailer 14

$15,629 NZD

£6,936 GBP

View

Retailer 15

$15,915 NZD

$8,970 USD

View

Price last confirmed 13 days ago

B+

Retailer 16

$16,474 NZD

$9,285 USD

View

B+

Retailer 17

$17,885 NZD

€9,600 EUR

View

B+

Retailer 18

$19,697 NZD

$11,101 USD

View

B+

Retailer 19

$22,416 NZD

£9,948 GBP

View

B+

Retailer 20

$23,167 NZD

ZAR 210,936 ZAR

View

B+

Retailer 21

$25,550 NZD

$14,400 USD

View

Retailer 22

$30,637 NZD

$17,267 USD

View

Retailer 23

$38,174 NZD

SGD 29,074 SGD

View

Retailer 24

$39,174 NZD

$22,078 USD

View

Most Expensive

With Clarity

831604048 · Oct 31

$41,810 NZD

$23,564 USD

View

24 more retailers have this diamond

Prices start from $9,176 NZDSave up to $32,634 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.

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