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Oval|Lab Grown|IGI

0.51ct D SI1 Oval Lab Grown Diamond

EX • D/SI1 • IGI LG764605608

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG764605608

Diamond specifications and retailer prices

From $125 AUD
As of November 1, 2026
Save $479 AUD (79%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,150 AUD at MOH London · As of October 29, 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 LG764605608 or 764605608. Listed at 15 retailers as of November 1, 2026, with a 383% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle32.5°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG764605608
Dimensions6.19 × 4.56 × 2.85 mm
L/W Ratio1.36
Girdle conditionFaceted
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
6.19 mm4.56 mm0.51 ctD / SI1
OriginLab Grown
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG764605608
Side View
Table 58.0%Crown 32.5°Girdle: STK-THKPavilion 40.8°Culet: NoneDepth 62.5%

Caratlytics Score

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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: $1,150 AUD|Low: $121 AUD|High: $1,157 AUD|Avg: $364 AUD|-0.6%
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
November 2, 2026
Retailer 9$125 AUD
Retailer 13$141 AUD
Retailer 5$166 AUD
Retailer 12$166 AUD
Retailer 7$247 AUD
Retailer 6$281 AUD
Retailer 10$298 AUD
Retailer 3$332 AUD
Retailer 2$333 AUD
Retailer 8$375 AUD
Retailer 11$408 AUD
Retailer 4$604 AUD
MOH London$1,150 AUD

41 data points across 13 retailers

15 retailers$125 AUD to $604 AUD

A
Cheapest Retailer
-
$125 AUD
A
Retailer 2
-
$146 AUD
View
A
Retailer 3
-
$166 AUD
View
Retailer 4
-
$166 AUD
View
Price last confirmed 12 days ago
A
Retailer 5
-
$247 AUD
View
A
Retailer 6
-
$281 AUD
View
A
Retailer 7
-
$298 AUD
View
A
Retailer 8
-
$332 AUD
View
B+
Retailer 9
-
$333 AUD
View
A
Retailer 10
-
$375 AUD
View
B+
Retailer 11
-
$408 AUD
View
B+
Retailer 12
-
$501 AUD
View
B
Retailer 13
-
$587 AUD
View
B
Retailer 14
-
$604 AUD
View
Most Expensive
MOH London
LG764605608 · Oct 29
$1,150 AUD
£622 GBP
View
Price last confirmed 8 days ago
14 more retailers have this diamond
Prices start from $125 AUDSave up to $479 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
$125 AUD