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Oval|Lab Grown|IGI

4.21ct D IF Oval Lab Grown Diamond

EX • D/IF • IGI LG793643349

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG793643349

Diamond specifications and retailer prices

From $5,751 NZD
$3,241 USD
As of November 1, 2026
Save $22,438 NZD (80%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $28,189 NZD at Novita Diamonds · As of November 1, 2026
View at Novita Diamonds

About this 4.21ct lab-grown oval diamond

This 4.21ct 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 LG793643349 or 793643349. Listed at 11 retailers as of November 1, 2026, with prices from $5,751 to $28,189, a $22,438 spread on the same certified stone. Novita Diamonds lists it at $28,189. 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
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG793643349
Dimensions12.98 × 9.21 × 5.73 mm
L/W Ratio1.41
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
Top View
12.98 mm9.21 mm4.21 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG793643349
Side View
Table 58.0%Crown 35.5°Girdle: MED-STKPavilion 40.1°Culet: NoneDepth 62.2%

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: Nov 1
Current: $28,189 NZD|Low: $5,692 NZD|High: $28,544 NZD|Avg: $12,966 NZD|+0.4%
Novita Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 7$5,751 NZD
Retailer 4$6,563 NZD
Retailer 2$7,576 NZD
Retailer 6$8,378 NZD
Retailer 3$8,972 NZD
Retailer 8$9,956 NZD
Retailer 5$15,161 NZD
Retailer 10$19,711 NZD
Retailer 9$20,775 NZD
Novita Diamonds$28,189 NZD

41 data points across 10 retailers

11 retailers$5,751 NZD to $28,189 NZD

A
Cheapest Retailer
-
$5,751 NZD
$3,241 USD
A
Retailer 2
-
$6,563 NZD
HK$28,900 HKD
View
A
Retailer 3
-
$7,576 NZD
£3,362 GBP
View
A
Retailer 4
-
$8,378 NZD
$4,722 USD
View
A
Retailer 5
-
$8,972 NZD
€4,816 EUR
View
A
Retailer 6
-
$9,956 NZD
$5,611 USD
View
Retailer 7
-
$12,443 NZD
$7,013 USD
View
Price last confirmed 96 days ago
B+
Retailer 8
-
$15,161 NZD
£6,728 GBP
View
B
Retailer 9
-
$19,711 NZD
$11,109 USD
View
B
Retailer 10
-
$20,775 NZD
$11,709 USD
View
Most Expensive
Novita Diamonds
cert_793643349 · Nov 1
$28,189 NZD
A$24,442 AUD
View
10 more retailers have this diamond
Prices start from $5,751 NZDSave up to $22,438 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.

A
4.21ct Oval
$5,751 NZD