CaratHunter
Plans
Cushion|Lab Grown|IGI

1.51ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG752544832

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG752544832

Diamond specifications and retailer prices

From $320 AUD
As of November 6, 2026
Save $1,402 AUD (81%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,722 AUD at Reve Diamonds · As of November 6, 2026
View at Reve Diamonds

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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG752544832 or 752544832. Listed at 13 retailers as of November 6, 2026, with prices from $320 to $1,722, a $1,402 spread on the same certified stone. Reve Diamonds lists it at $1,722. 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 angle34.2°
Pavilion angle37.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG752544832
Dimensions7.75 × 5.96 × 3.81 mm
L/W Ratio1.30
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.75 mm5.96 mm1.51 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG752544832
Side View
Table 62.0%Crown 34.2°Girdle: MED-THKPavilion 37.3°Culet: NoneDepth 63.9%

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 6
Current: $591 AUD|Low: $320 AUD|High: $1,717 AUD|Avg: $877 AUD|+2.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 2$320 AUD
Retailer 9$355 AUD
Retailer 1$591 AUD
Retailer 8$617 AUD
Retailer 3$642 AUD
Retailer 10$729 AUD
Retailer 6$926 AUD
Retailer 4$1,084 AUD
Retailer 7$1,485 AUD
Retailer 5$1,659 AUD

44 data points across 10 retailers

13 retailers$320 AUD to $1,722 AUD

A
Cheapest Retailer
-
$320 AUD
Final sale: no returns
Retailer 2
-
$355 AUD
View
Price last confirmed 12 days ago
A
Retailer 3
-
$591 AUD
View
B+
Retailer 4
-
$617 AUD
View
A
Retailer 5
-
$642 AUD
View
A
Retailer 6
-
$659 AUD
View
A
Retailer 7
-
$729 AUD
View
B+
Retailer 8
-
$926 AUD
View
B+
Retailer 9
-
$1,084 AUD
View
B+
Retailer 10
-
$1,218 AUD
View
B
Retailer 11
-
$1,485 AUD
View
B
Retailer 12
-
$1,659 AUD
View
Most Expensive
B
Reve Diamonds
B304BF3D5 · Nov 6
$1,722 AUD
$1,183 USD
View
12 more retailers have this diamond
Prices start from $320 AUDSave up to $1,402 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
$320 AUD