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Round|Lab Grown|IGI

1.51ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG794610644

Shape and cutting style on the report: Round brilliant

Certificate IGI LG794610644

Diamond specifications and retailer prices

From $279 AUD
$196 USD
As of November 1, 2026
Save $1,335 AUD (83%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $1,615 AUD at MOH London · As of November 1, 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG794610644 or 794610644. Listed at 19 retailers as of November 1, 2026, with prices from $279 to $1,615, a $1,335 spread on the same certified stone. MOH London lists it at $1,615. 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
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG794610644
Dimensions7.44 × 7.38 × 4.47 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.44 mm7.38 mm1.51 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG794610644
Side View
Table 57.0%Crown 34°Girdle: MediumPavilion 40.2°Culet: NoneDepth 60.4%

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: $1,615 AUD|Low: $272 AUD|High: $1,662 AUD|Avg: $794 AUD|-1.8%
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
November 1, 2026
Retailer 4$279 AUD
Retailer 14$310 AUD
Retailer 13$323 AUD
Retailer 9$346 AUD
Retailer 6$347 AUD
Retailer 15$601 AUD
Retailer 2$629 AUD
Retailer 7$646 AUD
Retailer 12$819 AUD
Retailer 11$894 AUD
Retailer 5$1,018 AUD
Retailer 10$1,110 AUD
Retailer 16$1,125 AUD
Retailer 3$1,186 AUD
Retailer 8$1,224 AUD
MOH London$1,615 AUD

36 data points across 16 retailers

19 retailers$279 AUD to $1,615 AUD

Retailer 1
-
$279 AUD
$196 USD
Price last confirmed 44 days ago
A
Retailer 2
-
$279 AUD
$196 USD
View
A
Retailer 3
-
$310 AUD
$218 USD
View
Final sale: no returns
A
Retailer 4
-
$323 AUD
$227 USD
View
Retailer 5
-
$339 AUD
$238 USD
View
Price last confirmed 43 days ago
A
Retailer 6
-
$346 AUD
$243 USD
View
Retailer 7
-
$347 AUD
$244 USD
View
Price last confirmed 7 days ago
B+
Retailer 8
-
$601 AUD
$422 USD
View
A
Retailer 9
-
$629 AUD
£348 GBP
View
A
Retailer 10
-
$646 AUD
$454 USD
View
B+
Retailer 11
-
$819 AUD
$575 USD
View
B+
Retailer 12
-
$894 AUD
$628 USD
View
B+
Retailer 13
-
$1,018 AUD
$715 USD
View
Retailer 14
-
$1,103 AUD
$775 USD
View
Price last confirmed 41 days ago
B+
Retailer 15
-
$1,110 AUD
$780 USD
View
B+
Retailer 16
-
$1,125 AUD
SGD 1,068 SGD
View
B+
Retailer 17
-
$1,186 AUD
$833 USD
View
B
Retailer 18
-
$1,224 AUD
$860 USD
View
Most Expensive
B
MOH London
LG794610644 · Nov 1
$1,615 AUD
£893 GBP
View
18 more retailers have this diamond
Prices start from $279 AUDSave up to $1,335 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
$279 AUD