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Oval|Lab Grown|IGI

0.51ct D SI1 Oval Lab Grown Diamond

ID • D/SI1 • IGI LG831609122

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG831609122

Diamond specifications and retailer prices

From £96 GBP
As of November 1, 2026
14 retailers carry this diamond
Most expensive: £582 GBP at MOH London · As of October 19, 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG831609122 or 831609122. Listed at 14 retailers as of November 1, 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

0.51
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle30°
Pavilion angle38.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831609122
Dimensions6.86 × 4.42 × 2.62 mm
L/W Ratio1.55
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.86 mm4.42 mm0.51 ctD / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG831609122
Side View
Table 60.0%Crown 30°Girdle: STK-THKPavilion 38.8°Culet: NoneDepth 59.3%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: £582 GBP|Low: £61 GBP|High: £585 GBP|Avg: £188 GBP|+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
Retailer 13
Retailer 14
Retailer 15
Retailer 16
October 27, 2026
Retailer 5£64 GBP
Retailer 4£71 GBP
Retailer 11£74 GBP
Retailer 7£84 GBP
Retailer 8£96 GBP
Retailer 13£131 GBP
Retailer 9£134 GBP
Retailer 14£150 GBP
Retailer 12£167 GBP
Retailer 16£169 GBP
Retailer 3£201 GBP
Retailer 6£227 GBP
Retailer 10£253 GBP
Retailer 15£253 GBP
Retailer 2£291 GBP
MOH London£582 GBP

32 data points across 16 retailers

14 retailers

Retailer 1
-
£64 GBP
Price last confirmed 19 days ago
Retailer 2
-
£74 GBP
View
Price last confirmed 13 days ago
Retailer 3
-
£84 GBP
View
Price last confirmed 18 days ago
A
Retailer 4
-
£96 GBP
View
Retailer 5
-
£131 GBP
View
Price last confirmed 19 days ago
Retailer 6
-
£134 GBP
View
Price last confirmed 12 days ago
Retailer 7
-
£167 GBP
View
Price last confirmed 11 days ago
Retailer 8
-
£169 GBP
View
Price last confirmed 19 days ago
Retailer 9
-
£201 GBP
View
Price last confirmed 14 days ago
Retailer 10
-
£227 GBP
View
Price last confirmed 13 days ago
Retailer 11
-
£253 GBP
View
Price last confirmed 13 days ago
Retailer 12
-
£253 GBP
View
Price last confirmed 13 days ago
Retailer 13
-
£291 GBP
View
Price last confirmed 9 days ago
Most Expensive
MOH London
LG831609122 · Oct 19
£582 GBP
View
Price last confirmed 18 days ago
13 more retailers have this diamond
Prices start from £96 GBP

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
£96 GBP