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Oval|Lab Grown|IGI

0.51ct E SI1 Oval Lab Grown Diamond

EX • E/SI1 • IGI LG843636789

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG843636789

Diamond specifications and retailer prices

From $103 USD
As of October 31, 2026
Save $707 USD (87%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $810 USD at MOH London · As of November 2, 2026
View at MOH London

About this 0.51ct lab-grown oval diamond

This 0.51ct lab-grown oval sits in the half to three-quarter carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG843636789 or 843636789. Listed at 11 retailers as of October 31, 2026, with prices from $103 to $810, a $707 spread on the same certified stone. MOH London lists it at $810. 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

0.51
Carat
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG843636789
Dimensions6.57 × 4.48 × 2.76 mm
L/W Ratio1.47
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.57 mm4.48 mm0.51 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG843636789
Side View
Table 61.0%Crown 34.4°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.6%

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 31
Current: $810 USD|Low: $100 USD|High: $814 USD|Avg: $310 USD|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 12$100 USD
Retailer 7$103 USD
Retailer 4$150 USD
Retailer 2$203 USD
Retailer 5$208 USD
Retailer 9$260 USD
Retailer 10$266 USD
Retailer 8$270 USD
Retailer 3$314 USD
Retailer 6$354 USD
Retailer 11$395 USD
MOH London$810 USD

13 data points across 12 retailers

11 retailers$103 USD to $810 USD

A
Cheapest Retailer
-
$103 USD
B+
Retailer 2
-
$150 USD
View
A
Retailer 3
-
$203 USD
View
A
Retailer 4
-
$208 USD
View
A
Retailer 5
-
$260 USD
View
A
Retailer 6
-
$266 USD
View
A
Retailer 7
-
$270 USD
View
B+
Retailer 8
-
$314 USD
View
B+
Retailer 9
-
$354 USD
View
B
Retailer 10
-
$395 USD
View
Most Expensive
B
MOH London
LG843636789 · Nov 2
$810 USD
£638 GBP
View
10 more retailers have this diamond
Prices start from $103 USDSave up to $707 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.

A
0.51ct Oval
$103 USD