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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 $315 USD
As of November 6, 2026
Save $2,185 USD (87%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $2,500 USD 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 11 retailers as of November 6, 2026, with prices from $315 to $2,500, a $2,185 spread on the same certified stone. Do Amore Diamonds lists it at $2,500. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $2,500 USD|Low: $272 USD|High: $2,500 USD|Avg: $948 USD
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 11$315 USD
Retailer 7$368 USD
Retailer 8$468 USD
Retailer 9$505 USD
Retailer 2$680 USD
Retailer 6$685 USD
Retailer 5$1,079 USD
Retailer 10$1,403 USD
Retailer 4$1,541 USD
Retailer 3$1,740 USD
Do Amore Diamonds$2,500 USD

43 data points across 11 retailers

11 retailers$315 USD to $2,500 USD

A
Cheapest Retailer
-
$315 USD
Final sale: no returns
A
Retailer 2
-
$368 USD
View
A
Retailer 3
-
$468 USD
View
A
Retailer 4
-
$505 USD
View
B+
Retailer 5
-
$680 USD
View
B+
Retailer 6
-
$685 USD
View
B
Retailer 7
-
$965 USD
View
B
Retailer 8
-
$1,079 USD
View
B
Retailer 9
-
$1,403 USD
View
B
Retailer 10
-
$1,541 USD
View
Most Expensive
B
Do Amore Diamonds
27-2F026FEA7 · Nov 6
$2,500 USD
View
10 more retailers have this diamond
Prices start from $315 USDSave up to $2,185 USD

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
$315 USD