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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 HK$4,629 HKD
$590 USD
As of October 29, 2026
2 retailers carry this diamond
Most expensive: HK$4,629 HKD 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

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

Price History

Last verified: Oct 29
Current: HK$4,629 HKD|Low: HK$706 HKD|High: HK$8,025 HKD|Avg: HK$3,406 HKD|-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 10HK$706 HKD
Retailer 5HK$910 HKD
Retailer 8HK$2,252 HKD
Retailer 2HK$2,354 HKD
Retailer 9HK$2,432 HKD
Retailer 7HK$3,368 HKD
Retailer 3HK$4,378 HKD
Brilliant EarthHK$4,629 HKD
Retailer 6HK$5,016 HKD
Retailer 4HK$8,025 HKD

13 data points across 10 retailers

2 retailers

B+
Retailer 1
-
HK$3,368 HKD
$429 USD
Price last confirmed 59 days ago
Most Expensive
B
Brilliant Earth
21141103A · Oct 29
HK$4,629 HKD
$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
HK$4,629 HKD