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Oval|Lab Grown|IGI

0.40ct D SI1 Oval Lab Grown Diamond

ID • D/SI1 • IGI LG782652238

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG782652238

Diamond specifications and retailer prices

From $277 NZD
£123 GBP
As of October 26, 2026
Save $377 NZD (58%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $1,253 NZD at MOH London · As of October 25, 2026
View at MOH London

About this 0.4ct lab-grown oval diamond

This 0.4ct lab-grown oval sits in the sub-half-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG782652238 or 782652238. Listed at 5 retailers as of October 25, 2026, with a 136% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

0.40
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle35.5°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG782652238
Dimensions6.11 × 4.19 × 2.54 mm
L/W Ratio1.46
Girdle conditionFaceted
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
6.11 mm4.19 mm0.40 ctD / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG782652238
Side View
Table 62.0%Crown 35.5°Girdle: THN-STKPavilion 40.2°CuletDepth 60.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 26
Current: $1,253 NZD|Low: $276 NZD|High: $1,442 NZD|Avg: $647 NZD|-13.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 26, 2026
Retailer 2$277 NZD
Retailer 4$378 NZD
Retailer 3$494 NZD
Retailer 5$654 NZD
MOH London$1,253 NZD

9 data points across 5 retailers

5 retailers$277 NZD to $654 NZD

A
Cheapest Retailer
-
$277 NZD
£123 GBP
Retailer 2
-
$378 NZD
$213 USD
View
Price last confirmed 7 days ago
B+
Retailer 3
-
$494 NZD
£219 GBP
View
B
Retailer 4
-
$654 NZD
$369 USD
View
Most Expensive
MOH London
LG782652238 · Oct 25
$1,253 NZD
£556 GBP
View
Price last confirmed 7 days ago
4 more retailers have this diamond
Prices start from $277 NZDSave up to $377 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
0.40ct Oval
$277 NZD