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Oval|Lab Grown|IGI

3.12ct H SI1 Oval Lab Grown Diamond

ID • H/SI1 • IGI LG632405978

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG632405978

Diamond specifications and retailer prices

From $2,710 USD
As of October 31, 2026
1 retailer carries this diamond
Only listing: $2,710 USD at Brilliant Earth
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Brilliant Earth

About this 3.12ct lab-grown oval diamond

This 3.12ct lab-grown oval sits in the three to five carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG632405978 or 632405978. Listed at a single retailer as of October 31, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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

3.12
Carat
H
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG632405978
Dimensions11.93 × 8.33 × 5.03 mm
L/W Ratio1.43
Girdle conditionFaceted
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
11.93 mm8.33 mm3.12 ctH / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG632405978
Side View
Table 61.0%Crown 34.2°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 60.4%

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: $2,710 USD|Low: $2,710 USD|High: $2,710 USD|Avg: $2,710 USD
December 30, 2025
Brilliant Earth$2,710 USD

4 data points across 1 retailer

1 retailer

B
Brilliant Earth
10212772B · Oct 31
$2,710 USD
View

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
3.12ct Oval
$2,710 USD