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Round|Lab Grown|IGI

1.51ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG621492010

Shape and cutting style on the report: Round brilliant

Certificate IGI LG621492010

Diamond specifications and retailer prices

From $350 AUD
As of November 3, 2026
Save $1,149 AUD (77%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,499 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 LG621492010 or 621492010. Listed at 11 retailers as of November 3, 2026, with prices from $350 to $1,499, a $1,149 spread on the same certified stone. MOH London lists it at $1,499. 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 angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG621492010
Dimensions7.36 × 7.32 × 4.53 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
HEARTS & ARROWS This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.36 mm7.32 mm1.51 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG621492010
Side View
Table 58.0%Crown 35.4°Girdle: MediumPavilion 40.7°Culet: NoneDepth 61.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 3
Current: $1,499 AUD|Low: $303 AUD|High: $1,529 AUD|Avg: $790 AUD|-2.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 5, 2026
Retailer 3$324 AUD
Retailer 7$350 AUD
Retailer 5$581 AUD
Retailer 9$611 AUD
Retailer 11$644 AUD
Retailer 10$649 AUD
Retailer 2$683 AUD
Retailer 12$846 AUD
Retailer 8$1,209 AUD
Retailer 4$1,243 AUD
Retailer 6$1,317 AUD
MOH London$1,499 AUD

37 data points across 12 retailers

11 retailers$350 AUD to $1,499 AUD

Retailer 1
-
$324 AUD
Price last confirmed 29 days ago
A
Retailer 2
-
$350 AUD
View
A
Retailer 3
-
$581 AUD
View
A
Retailer 4
-
$611 AUD
View
B+
Retailer 5
-
$644 AUD
View
B+
Retailer 6
-
$683 AUD
View
B+
Retailer 7
-
$846 AUD
View
B
Retailer 8
-
$1,209 AUD
View
B
Retailer 9
-
$1,243 AUD
View
B
Retailer 10
-
$1,317 AUD
View
Most Expensive
B
MOH London
LG621492010 · Nov 5
$1,499 AUD
£826 GBP
View
10 more retailers have this diamond
Prices start from $350 AUDSave up to $1,149 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
$350 AUD