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Oval|Lab Grown|IGI

0.51ct E SI1 Oval Lab Grown Diamond

VG • E/SI1 • IGI LG400929381

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG400929381

Diamond specifications and retailer prices

From $511 AUD
As of November 5, 2026
Save $627 AUD (55%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $2,471 AUD at MOH London · As of November 5, 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 very-good cut grade and certified by IGI LG400929381 or 400929381. Listed at 12 retailers as of November 5, 2026, with a 123% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.51
Carat
E
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG400929381
Dimensions6.09 × 4.47 × 2.91 mm
L/W Ratio1.36
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by high pressure high temperature process (HPHT) Type II
Top View
6.09 mm4.47 mm0.51 ctE / SI1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG400929381
Side View
Table 56.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 65.1%

Caratlytics Score

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

Price History

Last verified: Nov 5
Current: $2,471 AUD|Low: $358 AUD|High: $2,508 AUD|Avg: $960 AUD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 3$358 AUD
Retailer 6$511 AUD
Retailer 7$553 AUD
Retailer 10$572 AUD
Retailer 8$635 AUD
Retailer 11$635 AUD
Retailer 9$1,017 AUD
Retailer 4$1,129 AUD
Retailer 2$1,138 AUD
Retailer 5$1,860 AUD
MOH London$2,471 AUD

45 data points across 11 retailers

12 retailers$511 AUD to $1,138 AUD

B+
Cheapest Retailer
-
$511 AUD
B
Retailer 2
-
$553 AUD
View
B
Retailer 3
-
$572 AUD
View
Final sale: no returns
B
Retailer 4
-
$594 AUD
View
B
Retailer 5
-
$635 AUD
View
Retailer 6
-
$635 AUD
View
Price last confirmed 12 days ago
B
Retailer 7
-
$1,017 AUD
View
B
Retailer 8
-
$1,129 AUD
View
B
Retailer 9
-
$1,138 AUD
View
Retailer 10
-
$1,860 AUD
View
Price under review
Retailer 11
-
$2,039 AUD
View
Price under review
Most Expensive
MOH London
LG400929381 · Nov 5
$2,471 AUD
£1,337 GBP
View
Price under review
11 more retailers have this diamond
Prices start from $511 AUDSave up to $627 AUD

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+
0.51ct Oval
$511 AUD