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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 $231 NZD
As of November 1, 2026
14 retailers carry this diamond
Most expensive: $1,404 NZD 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: $1,404 NZD|Low: $146 NZD|High: $1,414 NZD|Avg: $455 NZD|+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$153 NZD
Retailer 4$171 NZD
Retailer 11$179 NZD
Retailer 7$202 NZD
Retailer 8$231 NZD
Retailer 13$316 NZD
Retailer 9$323 NZD
Retailer 14$363 NZD
Retailer 12$404 NZD
Retailer 16$408 NZD
Retailer 3$485 NZD
Retailer 6$548 NZD
Retailer 10$612 NZD
Retailer 15$612 NZD
Retailer 2$704 NZD
MOH London$1,404 NZD

32 data points across 16 retailers

14 retailers

Retailer 1
-
$153 NZD
Price last confirmed 19 days ago
Retailer 2
-
$179 NZD
View
Price last confirmed 13 days ago
Retailer 3
-
$202 NZD
View
Price last confirmed 18 days ago
A
Retailer 4
-
$231 NZD
View
Retailer 5
-
$316 NZD
View
Price last confirmed 19 days ago
Retailer 6
-
$323 NZD
View
Price last confirmed 12 days ago
Retailer 7
-
$404 NZD
View
Price last confirmed 11 days ago
Retailer 8
-
$408 NZD
View
Price last confirmed 19 days ago
Retailer 9
-
$485 NZD
View
Price last confirmed 14 days ago
Retailer 10
-
$548 NZD
View
Price last confirmed 13 days ago
Retailer 11
-
$612 NZD
View
Price last confirmed 13 days ago
Retailer 12
-
$612 NZD
View
Price last confirmed 13 days ago
Retailer 13
-
$704 NZD
View
Price last confirmed 9 days ago
Most Expensive
MOH London
LG831609122 · Oct 19
$1,404 NZD
£613 GBP
View
Price last confirmed 18 days ago
13 more retailers have this diamond
Prices start from $231 NZD

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
$231 NZD