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Oval|Lab Grown|IGI

4.05ct E IF Oval Lab Grown Diamond

ID • E/IF • IGI LG797669797

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG797669797

Diamond specifications and retailer prices

From $3,940 NZD
£1,743 GBP
As of October 29, 2026
Save $13,598 NZD (78%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $17,538 NZD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 4.05ct lab-grown oval diamond

This 4.05ct lab-grown oval sits in the three to five carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG797669797 or 797669797. Listed at 24 retailers as of October 29, 2026, with prices from $3,940 to $17,538, a $13,598 spread on the same certified stone. Brilliant Earth lists it at $17,538. 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

4.05
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG797669797
Dimensions12.92 × 8.87 × 5.58 mm
L/W Ratio1.46
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
12.92 mm8.87 mm4.05 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG797669797
Side View
Table 59.0%Crown 35.6°Girdle: STK-THKPavilion 40.5°Culet: NoneDepth 62.9%

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: Oct 29
Current: $17,538 NZD|Low: $3,892 NZD|High: $17,538 NZD|Avg: $7,829 NZD
Brilliant Earth
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
October 29, 2026
Retailer 12$3,940 NZD
Retailer 13$4,054 NZD
Retailer 17$4,412 NZD
Retailer 9$4,704 NZD
Retailer 15$4,704 NZD
Retailer 10$5,090 NZD
Retailer 11$6,456 NZD
Retailer 16$6,465 NZD
Retailer 6$7,072 NZD
Retailer 5$7,209 NZD
Retailer 4$7,424 NZD
Retailer 7$9,798 NZD
Retailer 2$10,012 NZD
Retailer 18$10,093 NZD
Retailer 3$10,995 NZD
Retailer 8$11,933 NZD
Retailer 14$12,778 NZD
Brilliant Earth$17,538 NZD

33 data points across 18 retailers

24 retailers$3,940 NZD to $17,538 NZD

A
Cheapest Retailer
-
$3,940 NZD
£1,743 GBP
A
Retailer 2
-
$4,054 NZD
$2,277 USD
View
A
Retailer 3
-
$4,412 NZD
$2,478 USD
View
A
Retailer 4
-
$4,538 NZD
$2,549 USD
View
Final sale: no returns
Retailer 5
-
$4,704 NZD
$2,642 USD
View
Price last confirmed 18 days ago
A
Retailer 6
-
$4,704 NZD
$2,642 USD
View
A
Retailer 7
-
$4,994 NZD
$2,805 USD
View
A
Retailer 8
-
$5,090 NZD
$2,859 USD
View
A
Retailer 9
-
$6,456 NZD
£2,855 GBP
View
A
Retailer 10
-
$6,465 NZD
$3,631 USD
View
A
Retailer 11
-
$7,072 NZD
$3,972 USD
View
A
Retailer 12
-
$7,209 NZD
$4,049 USD
View
A
Retailer 13
-
$8,927 NZD
£3,948 GBP
View
A
Retailer 14
-
$9,798 NZD
$5,503 USD
View
A
Retailer 15
-
$10,012 NZD
ZAR 90,846 ZAR
View
Retailer 16
-
$10,093 NZD
A$8,721 AUD
View
Price last confirmed 7 days ago
Retailer 17
-
$10,995 NZD
$6,175 USD
View
Price last confirmed 8 days ago
B+
Retailer 18
-
$11,933 NZD
$6,702 USD
View
B+
Retailer 19
-
$12,291 NZD
$6,903 USD
View
B+
Retailer 20
-
$12,560 NZD
$7,054 USD
View
B+
Retailer 21
-
$12,778 NZD
£5,651 GBP
View
B+
Retailer 22
-
$13,281 NZD
$7,459 USD
View
B
Retailer 23
-
$16,432 NZD
$9,229 USD
View
Most Expensive
B
Brilliant Earth
19793666A · Oct 29
$17,538 NZD
$9,850 USD
View
23 more retailers have this diamond
Prices start from $3,940 NZDSave up to $13,598 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
4.05ct Oval
$3,940 NZD