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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 $186 NZD
As of October 31, 2026
Save $1,276 NZD (87%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,462 NZD 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 $186 to $1,462, a $1,276 spread on the same certified stone. MOH London lists it at $1,462. 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
Colour
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: $1,462 NZD|Low: $180 NZD|High: $1,469 NZD|Avg: $560 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
November 2, 2026
Retailer 12$180 NZD
Retailer 7$186 NZD
Retailer 4$271 NZD
Retailer 2$366 NZD
Retailer 5$375 NZD
Retailer 9$469 NZD
Retailer 10$480 NZD
Retailer 8$487 NZD
Retailer 3$566 NZD
Retailer 6$639 NZD
Retailer 11$713 NZD
MOH London$1,462 NZD

13 data points across 12 retailers

11 retailers$186 NZD to $1,462 NZD

A
Cheapest Retailer
-
$186 NZD
B+
Retailer 2
-
$271 NZD
View
A
Retailer 3
-
$366 NZD
View
A
Retailer 4
-
$375 NZD
View
A
Retailer 5
-
$469 NZD
View
A
Retailer 6
-
$480 NZD
View
A
Retailer 7
-
$487 NZD
View
B+
Retailer 8
-
$566 NZD
View
B+
Retailer 9
-
$639 NZD
View
B
Retailer 10
-
$713 NZD
View
Most Expensive
B
MOH London
LG843636789 · Nov 2
$1,462 NZD
£638 GBP
View
10 more retailers have this diamond
Prices start from $186 NZDSave up to $1,276 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
$186 NZD