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Cushion|Lab Grown|IGI

1.51ct I VS1 Cushion Lab Grown Diamond

EX • I/VS1 • IGI LG649405817

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG649405817

Diamond specifications and retailer prices

From $501 AUD
$352 USD
As of November 1, 2026
Save $1,341 AUD (73%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $1,842 AUD at MOH London · As of November 1, 2026
View at MOH London

About this 1.51ct lab-grown cushion diamond

This 1.51ct lab-grown cushion sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG649405817 or 649405817. Listed at 8 retailers as of November 1, 2026, with prices from $501 to $1,842, a $1,341 spread on the same certified stone. MOH London lists it at $1,842. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
I
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.7°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG649405817
Dimensions6.56 × 6.53 × 4.47 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.56 mm6.53 mm1.51 ctI / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG649405817
Side View
Table 60.0%Crown 37.7°Girdle: MED-THKPavilion 39.4°Culet: NoneDepth 68.5%

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: $1,842 AUD|Low: $500 AUD|High: $1,866 AUD|Avg: $1,120 AUD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 1, 2026
Retailer 2$501 AUD
Retailer 4$705 AUD
Retailer 5$774 AUD
Retailer 3$1,125 AUD
Retailer 7$1,168 AUD
Retailer 6$1,719 AUD
MOH London$1,842 AUD

15 data points across 7 retailers

8 retailers$501 AUD to $1,842 AUD

A
Cheapest Retailer
-
$501 AUD
$352 USD
A
Retailer 2
-
$705 AUD
$495 USD
View
A
Retailer 3
-
$774 AUD
$544 USD
View
B+
Retailer 4
-
$1,125 AUD
$790 USD
View
Retailer 5
-
$1,139 AUD
$800 USD
View
Price last confirmed 84 days ago
Retailer 6
-
$1,153 AUD
$810 USD
View
Price last confirmed 28 days ago
B
Retailer 7
-
$1,719 AUD
$1,207 USD
View
Most Expensive
B
MOH London
LG649405817 · Nov 1
$1,842 AUD
£1,019 GBP
View
7 more retailers have this diamond
Prices start from $501 AUDSave up to $1,341 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 Cushion
$501 AUD