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Oval|Lab Grown|IGI

1.51ct E SI1 Oval Lab Grown Diamond

ID • E/SI1 • IGI LG831691641

Shape and cutting style on the report: Oval brilliant

Certificate IGI LG831691641

Diamond specifications and retailer prices

From $594 AUD
As of November 6, 2026
Save $1,068 AUD (64%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $1,662 AUD at MOH London · As of November 5, 2026
View at MOH London

About this 1.51ct lab-grown oval diamond

This 1.51ct lab-grown oval sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG831691641 or 831691641. Listed at 7 retailers as of November 5, 2026, with prices from $594 to $1,662, a $1,068 spread on the same certified stone. MOH London lists it at $1,662. 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

1.51
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle42.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831691641
Dimensions9.00 × 6.48 × 4.13 mm
L/W Ratio1.39
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
9.00 mm6.48 mm1.51 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831691641
Side View
Table 64.0%Crown 35.3°Girdle: MED-STKPavilion 42.7°Culet: NoneDepth 63.7%

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 6
Current: $1,662 AUD|Low: $594 AUD|High: $1,676 AUD|Avg: $1,018 AUD|-0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 2$594 AUD
Retailer 6$620 AUD
Retailer 3$645 AUD
Retailer 4$661 AUD
Retailer 5$1,223 AUD
Retailer 7$1,499 AUD
MOH London$1,662 AUD

14 data points across 7 retailers

7 retailers$594 AUD to $1,662 AUD

A
Cheapest Retailer
-
$594 AUD
B+
Retailer 2
-
$620 AUD
View
A
Retailer 3
-
$645 AUD
View
A
Retailer 4
-
$661 AUD
View
B+
Retailer 5
-
$1,223 AUD
View
B
Retailer 6
-
$1,499 AUD
View
Most Expensive
B
MOH London
LG831691641 · Nov 5
$1,662 AUD
£899 GBP
View
6 more retailers have this diamond
Prices start from $594 AUDSave up to $1,068 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
1.51ct Oval
$594 AUD