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Oval|Lab Grown|IGI

0.51ct D SI1 Oval Lab Grown Diamond

ID • D/SI1 • IGI LG735508929

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG735508929

Diamond specifications and retailer prices

From $121 AUD
As of November 1, 2026
Save $975 AUD (89%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,096 AUD 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG735508929 or 735508929. Listed at 15 retailers as of November 1, 2026, with prices from $121 to $1,096, a $975 spread on the same certified stone. MOH London lists it at $1,096. 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 angle31.3°
Pavilion angle41.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG735508929
Dimensions6.50 × 4.42 × 2.79 mm
L/W Ratio1.47
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.50 mm4.42 mm0.51 ctD / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG735508929
Side View
Table 59.0%Crown 31.3°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 63.1%

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: Nov 1
Current: $1,096 AUD|Low: $99 AUD|High: $1,155 AUD|Avg: $331 AUD|-5.1%
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
November 2, 2026
Retailer 12$121 AUD
Retailer 10$134 AUD
Retailer 5$140 AUD
Retailer 13$159 AUD
Retailer 6$163 AUD
Retailer 15$247 AUD
Retailer 8$263 AUD
Retailer 9$290 AUD
Retailer 4$323 AUD
Retailer 2$326 AUD
Retailer 11$359 AUD
Retailer 7$408 AUD
Retailer 3$479 AUD
Retailer 14$489 AUD
MOH London$1,096 AUD

37 data points across 15 retailers

15 retailers$121 AUD to $1,096 AUD

A
Cheapest Retailer
-
$121 AUD
A
Retailer 2
-
$134 AUD
View
Final sale: no returns
A
Retailer 3
-
$140 AUD
View
A
Retailer 4
-
$159 AUD
View
Retailer 5
-
$163 AUD
View
Price last confirmed 12 days ago
A
Retailer 6
-
$247 AUD
View
A
Retailer 7
-
$263 AUD
View
A
Retailer 8
-
$290 AUD
View
A
Retailer 9
-
$323 AUD
View
A
Retailer 10
-
$326 AUD
View
A
Retailer 11
-
$359 AUD
View
B+
Retailer 12
-
$408 AUD
View
B+
Retailer 13
-
$479 AUD
View
B+
Retailer 14
-
$489 AUD
View
Most Expensive
B
MOH London
LG735508929 · Nov 2
$1,096 AUD
£593 GBP
View
14 more retailers have this diamond
Prices start from $121 AUDSave up to $975 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.

A
0.51ct Oval
$121 AUD