Oval|Lab Grown|IGI

4.00ct D IF Oval Lab Grown Diamond

EX • D/IF • IGI LG683578081

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG683578081

Diamond specifications and retailer prices

From $6,148 NZD

$3,465 USD

As of October 31, 2026

Save $32,461 NZD (84%) vs most expensive(unlock to see where)

22 retailers carry this diamond

Most expensive: $38,609 NZD at Mervis Diamond Importers · As of October 31, 2026

View at Mervis Diamond Importers

About this 4ct lab-grown oval diamond

This 4ct lab-grown oval sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG683578081 or 683578081. Listed at 22 retailers as of October 31, 2026, with prices from $6,148 to $38,609, a $32,461 spread on the same certified stone. Mervis Diamond Importers lists it at $38,609. 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

4.00

Carat

Colour

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle36°

Pavilion angle40.2°

OriginLab Grown

Grading LabIGI

CertificateIGI LG683578081

Dimensions12.76 × 8.97 × 5.58 mm

L/W Ratio1.42

Girdle conditionFaceted

Culet sizePointed

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 LG683578081

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 31

Current: $38,609 NZD|Low: $5,270 NZD|High: $38,609 NZD|Avg: $13,846 NZD

Mervis Diamond Importers

Retailer 2

Retailer 3

Retailer 4

Retailer 5

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Retailer 7

Retailer 8

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Retailer 11

Retailer 12

Retailer 13

Retailer 14

Retailer 15

Retailer 16

Retailer 17

Retailer 18

Retailer 19

November 1, 2026

Retailer 3$5,270 NZD

Retailer 6$5,972 NZD

Retailer 8$6,148 NZD

Retailer 9$6,368 NZD

Retailer 7$6,505 NZD

Retailer 17$6,645 NZD

Retailer 16$8,962 NZD

Retailer 2$9,304 NZD

Retailer 4$9,892 NZD

Retailer 10$10,735 NZD

Retailer 15$10,876 NZD

Retailer 12$14,959 NZD

Retailer 14$15,188 NZD

Retailer 19$15,962 NZD

Retailer 13$17,912 NZD

Retailer 11$20,215 NZD

Retailer 5$23,800 NZD

Retailer 18$34,830 NZD

Mervis Diamond Importers$38,609 NZD

42 data points across 19 retailers

22 retailers$6,148 NZD to $38,609 NZD

Cheapest Retailer

$6,148 NZD

$3,465 USD

Final sale: no returns

Retailer 2

$6,368 NZD

$3,589 USD

View

Price last confirmed 29 days ago

Retailer 3

$6,505 NZD

$3,666 USD

View

Retailer 4

$6,645 NZD

$3,745 USD

View

Retailer 5

$7,136 NZD

$4,022 USD

View

Retailer 6

$8,783 NZD

$4,950 USD

View

Price last confirmed 24 days ago

Retailer 7

$8,962 NZD

$5,051 USD

View

Retailer 8

$9,304 NZD

£4,129 GBP

View

Retailer 9

$9,892 NZD

$5,575 USD

View

B+

Retailer 10

$10,735 NZD

£4,764 GBP

View

Retailer 11

$10,876 NZD

$6,130 USD

View

B+

Retailer 12

$14,959 NZD

ZAR 136,198 ZAR

View

Retailer 13

$15,188 NZD

A$13,169 AUD

View

Price last confirmed 9 days ago

B+

Retailer 14

$15,962 NZD

$8,996 USD

View

Retailer 15

$17,532 NZD

$9,881 USD

View

B+

Retailer 16

$17,912 NZD

£7,949 GBP

View

Retailer 17

$20,215 NZD

$11,393 USD

View

Retailer 18

$23,800 NZD

$13,414 USD

View

Retailer 19

$24,688 NZD

$13,914 USD

View

Retailer 20

$34,830 NZD

$19,630 USD

View

Retailer 21

$37,775 NZD

$21,290 USD

View

Most Expensive

Mervis Diamond Importers

1985409298 · Oct 31

$38,609 NZD

$21,760 USD

View

21 more retailers have this diamond

Prices start from $6,148 NZDSave up to $32,461 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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