CaratHunter
Plans
Cushion|Lab Grown|IGI

1.50ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG492129101

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG492129101

Diamond specifications and retailer prices

From $458 AUD
As of November 6, 2026
Save $3,180 AUD (87%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $3,639 AUD at Do Amore Diamonds · As of November 6, 2026
View at Do Amore Diamonds

About this 1.5ct lab-grown cushion diamond

This 1.5ct 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 LG492129101 or 492129101. Listed at 13 retailers as of November 6, 2026, with prices from $458 to $3,639, a $3,180 spread on the same certified stone. Do Amore Diamonds lists it at $3,639. 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

1.50
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.3°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG492129101
Dimensions7.22 × 6.40 × 4.20 mm
L/W Ratio1.13
Girdle conditionFaceted
Culet sizePointed
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
7.22 mm6.40 mm1.50 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG492129101
Side View
Table 61.5%Crown 32.3°Girdle: Slightly ThickPavilion 39.4°Culet: NoneDepth 65.6%

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: $3,639 AUD|Low: $396 AUD|High: $3,639 AUD|Avg: $1,387 AUD
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 7, 2026
Retailer 4$458 AUD
Retailer 11$536 AUD
Retailer 12$681 AUD
Retailer 13$735 AUD
Retailer 7$990 AUD
Retailer 10$997 AUD
Retailer 2$1,125 AUD
Retailer 9$1,570 AUD
Retailer 3$2,042 AUD
Retailer 6$2,195 AUD
Retailer 8$2,243 AUD
Retailer 5$2,532 AUD
Do Amore Diamonds$3,639 AUD

43 data points across 13 retailers

13 retailers$458 AUD to $3,639 AUD

A
Cheapest Retailer
-
$458 AUD
Final sale: no returns
A
Retailer 2
-
$536 AUD
View
A
Retailer 3
-
$681 AUD
View
A
Retailer 4
-
$735 AUD
View
B+
Retailer 5
-
$990 AUD
View
B+
Retailer 6
-
$997 AUD
View
B+
Retailer 7
-
$1,125 AUD
View
B
Retailer 8
-
$1,404 AUD
View
B
Retailer 9
-
$1,570 AUD
View
B
Retailer 10
-
$2,042 AUD
View
B
Retailer 11
-
$2,195 AUD
View
B
Retailer 12
-
$2,243 AUD
View
Most Expensive
B
Do Amore Diamonds
27-2F026FEA7 · Nov 6
$3,639 AUD
$2,500 USD
View
12 more retailers have this diamond
Prices start from $458 AUDSave up to $3,180 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
1.50ct Cushion
$458 AUD