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Round|Lab Grown|IGI

1.51ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG845657746

Shape and cutting style on the report: Round brilliant

Certificate IGI LG845657746

Diamond specifications and retailer prices

From $277 AUD
As of November 5, 2026
Save $1,298 AUD (82%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $1,575 AUD at MOH London · As of November 5, 2026
View at MOH London

About this 1.51ct lab-grown round diamond

This 1.51ct lab-grown round 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 LG845657746 or 845657746. Listed at 17 retailers as of November 5, 2026, with prices from $277 to $1,575, a $1,298 spread on the same certified stone. MOH London lists it at $1,575. 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 angle35.4°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG845657746
Dimensions7.29 × 7.41 × 4.56 mm
L/W Ratio1.02
Girdle conditionFaceted
Culet sizeNone
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
7.29 mm7.41 mm1.51 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG845657746
Side View
Table 57.0%Crown 35.4°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.3%

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 5
Current: $1,575 AUD|Low: $271 AUD|High: $1,580 AUD|Avg: $716 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
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
November 6, 2026
Retailer 13$277 AUD
Retailer 3$304 AUD
Retailer 5$316 AUD
Retailer 7$336 AUD
Retailer 10$344 AUD
Retailer 6$580 AUD
Retailer 11$590 AUD
Retailer 2$599 AUD
Retailer 17$600 AUD
Retailer 14$606 AUD
Retailer 8$706 AUD
Retailer 16$824 AUD
Retailer 15$1,029 AUD
Retailer 12$1,106 AUD
Retailer 4$1,161 AUD
Retailer 9$1,243 AUD
MOH London$1,575 AUD

18 data points across 17 retailers

17 retailers$277 AUD to $1,575 AUD

A
Cheapest Retailer
-
$277 AUD
A
Retailer 2
-
$304 AUD
View
Final sale: no returns
A
Retailer 3
-
$316 AUD
View
Retailer 4
-
$336 AUD
View
Price last confirmed 12 days ago
A
Retailer 5
-
$344 AUD
View
A
Retailer 6
-
$580 AUD
View
A
Retailer 7
-
$590 AUD
View
B+
Retailer 8
-
$599 AUD
View
A
Retailer 9
-
$600 AUD
View
A
Retailer 10
-
$606 AUD
View
A
Retailer 11
-
$706 AUD
View
B+
Retailer 12
-
$824 AUD
View
B+
Retailer 13
-
$1,029 AUD
View
B+
Retailer 14
-
$1,106 AUD
View
B+
Retailer 15
-
$1,161 AUD
View
B
Retailer 16
-
$1,243 AUD
View
Most Expensive
B
MOH London
LG845657746 · Nov 5
$1,575 AUD
£868 GBP
View
16 more retailers have this diamond
Prices start from $277 AUDSave up to $1,298 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 Round
$277 AUD