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Oval|Lab Grown|IGI

4.00ct G SI1 Oval Lab Grown Diamond

EX • G/SI1 • IGI LG570365779

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG570365779

Diamond specifications and retailer prices

From $5,412 NZD
$3,050 USD
As of October 31, 2026
2 retailers carry this diamond
Most expensive: $5,412 NZD at Brilliant Earth
View at Brilliant Earth

About this 4ct lab-grown oval diamond

This 4ct lab-grown oval sits in the three to five carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG570365779 or 570365779. Listed at 2 retailers as of October 31, 2026. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

4.00
Carat
G
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG570365779
Dimensions12.69 × 8.91 × 5.62 mm
L/W Ratio1.42
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
12.69 mm8.91 mm4.00 ctG / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG570365779
Side View
Table 61.5%Crown 38°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 63.1%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 31
Current: $1,738 NZD|Low: $1,120 NZD|High: $3,747 NZD|Avg: $2,036 NZD|-0.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
September 18, 2026
Retailer 6$1,120 NZD
Retailer 5$1,578 NZD
Retailer 3$1,631 NZD
Retailer 1$1,738 NZD
Retailer 2$2,404 NZD
Retailer 4$3,747 NZD

2 data points across 6 retailers

2 retailers

Retailer 1
-
$3,486 NZD
$1,965 USD
Price last confirmed 53 days ago
Most Expensive
B
Brilliant Earth
20779748A · Oct 31
$5,412 NZD
$3,050 USD
View
1 more retailer has this diamond

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.

B
4.00ct Oval
$5,412 NZD