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Cushion|Lab Grown|IGI

1.50ct G SI1 Cushion Lab Grown Diamond

VG • G/SI1 • IGI LG557236083

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG557236083

Diamond specifications and retailer prices

From $377 USD
As of November 1, 2026
Save $1,953 USD (84%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $2,330 USD at Do Amore Diamonds · As of November 1, 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG557236083 or 557236083. Listed at 11 retailers as of November 1, 2026, with prices from $377 to $2,330, a $1,953 spread on the same certified stone. Do Amore Diamonds lists it at $2,330. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.50
Carat
G
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG557236083
Dimensions6.50 × 6.44 × 4.51 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
6.50 mm6.44 mm1.50 ctG / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG557236083
Side View
Table 60.5%Crown 33°Girdle: THK-VTKPavilion 40.2°Culet: NoneDepth 70.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $2,330 USD|Low: $238 USD|High: $2,330 USD|Avg: $804 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 2, 2026
Retailer 9$301 USD
Retailer 6$377 USD
Retailer 2$425 USD
Retailer 10$506 USD
Retailer 7$626 USD
Retailer 4$637 USD
Retailer 11$825 USD
Retailer 3$1,056 USD
Retailer 8$1,237 USD
Retailer 5$1,332 USD
Do Amore Diamonds$2,330 USD

34 data points across 11 retailers

11 retailers$377 USD to $2,330 USD

Retailer 1
-
$301 USD
Price last confirmed 8 days ago
B+
Retailer 2
-
$377 USD
View
B+
Retailer 3
-
$425 USD
£335 GBP
View
B+
Retailer 4
-
$506 USD
View
B+
Retailer 5
-
$626 USD
View
B+
Retailer 6
-
$637 USD
£502 GBP
View
B
Retailer 7
-
$825 USD
View
B
Retailer 8
-
$1,056 USD
View
B
Retailer 9
-
$1,237 USD
View
C
Retailer 10
-
$1,332 USD
£1,049 GBP
View
Most Expensive
C
Do Amore Diamonds
27-8685E21B7 · Nov 1
$2,330 USD
View
10 more retailers have this diamond
Prices start from $377 USDSave up to $1,953 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.

B+
1.50ct Cushion
$377 USD