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Oval|Lab Grown|IGI

1.00ct E SI1 Oval Lab Grown Diamond

ID • E/SI1 • IGI LG818629939

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG818629939

Diamond specifications and retailer prices

From €530 EUR
$590 USD
As of October 29, 2026
2 retailers carry this diamond
Most expensive: €530 EUR at Brilliant Earth
View at Brilliant Earth

About this 1ct lab-grown oval diamond

This 1ct lab-grown oval sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG818629939 or 818629939. Listed at 2 retailers as of October 29, 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

1.00
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.7°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818629939
Dimensions7.79 × 5.56 × 3.63 mm
L/W Ratio1.40
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
7.79 mm5.56 mm1.00 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818629939
Side View
Table 60.0%Crown 37.7°Girdle: STK-THKPavilion 41.1°Culet: NoneDepth 65.3%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 29
Current: €530 EUR|Low: €81 EUR|High: €919 EUR|Avg: €390 EUR|-37.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
September 7, 2026
Retailer 10€81 EUR
Retailer 5€104 EUR
Retailer 8€258 EUR
Retailer 2€270 EUR
Retailer 9€279 EUR
Retailer 7€386 EUR
Retailer 3€501 EUR
Brilliant Earth€530 EUR
Retailer 6€574 EUR
Retailer 4€919 EUR

13 data points across 10 retailers

2 retailers

Retailer 1
-
€386 EUR
$429 USD
Price last confirmed 60 days ago
Most Expensive
B
Brilliant Earth
21141103A · Oct 29
€530 EUR
$590 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
1.00ct Oval
€530 EUR