Oval|Lab Grown|IGI

0.40ct H SI1 Oval Lab Grown Diamond

EX • H/SI1 • IGI LG12326108

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG12326108

Diamond specifications and retailer prices

From $197 USD
As of October 29, 2026
Save $589 USD (75%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $1,144 USD at MOH London · As of October 26, 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG12326108 or 12326108. Listed at 7 retailers as of October 28, 2026, with a 299% 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
H
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishGood
SymmetryGood
FluorescenceNone
Crown angle34.5°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG12326108
Dimensions5.75 × 4.18 × 2.59 mm
L/W Ratio1.38
Culet sizeNone
Cert comments
As Grown - No indications of post-growth treatment. This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process.
Top View
5.75 mm4.18 mm0.40 ctH / SI1
OriginLab Grown
CutExcellent
PolishGood
SymmetryGood
FluorescenceNone
CertificateIGI LG12326108
Side View
Table 58.5%Crown 34.5°Girdle: STK-UNDPavilion 39.8°Culet: NoneDepth 62.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $1,144 USD|Low: $189 USD|High: $1,157 USD|Avg: $452 USD|+0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 25, 2026
Retailer 3$197 USD
Retailer 4$244 USD
Retailer 6$244 USD
Retailer 8$258 USD
Retailer 5$426 USD
Retailer 2$481 USD
Retailer 7$528 USD
MOH London$1,144 USD

14 data points across 8 retailers

7 retailers$197 USD to $786 USD

B+
Cheapest Retailer
-
$197 USD
B+
Retailer 2
-
$229 USD
View
B+
Retailer 3
-
$244 USD
View
B+
Retailer 4
-
$244 USD
View
B
Retailer 5
-
$426 USD
View
C
Retailer 6
-
$786 USD
View
Most Expensive
MOH London
LG12326108 · Oct 26
$1,144 USD
£901 GBP
View
Price under review
6 more retailers have this diamond
Prices start from $197 USDSave up to $589 USD

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+
0.40ct Oval
$197 USD