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Cushion|Lab Grown|IGI

1.50ct F SI1 Cushion Lab Grown Diamond

ID • F/SI1 • IGI LG522251870

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG522251870

Diamond specifications and retailer prices

From $206 USD
As of November 5, 2026
Save $938 USD (82%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,144 USD at Reve Diamonds · As of November 6, 2026
View at Reve 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG522251870 or 522251870. Listed at 13 retailers as of November 5, 2026, with prices from $206 to $1,144, a $938 spread on the same certified stone. Reve Diamonds lists it at $1,144. 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
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.6°
Pavilion angle33.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG522251870
Dimensions6.62 × 6.47 × 4.11 mm
L/W Ratio1.02
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
6.62 mm6.47 mm1.50 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG522251870
Side View
Table 64.5%Crown 36.6°Girdle: MED-VTKPavilion 33.6°Culet: NoneDepth 63.5%

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 5
Current: $389 USD|Low: $203 USD|High: $1,144 USD|Avg: $529 USD|+4.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Reve Diamonds
November 6, 2026
Retailer 8$206 USD
Retailer 12$225 USD
Retailer 2$318 USD
Retailer 1$389 USD
Retailer 6$408 USD
Retailer 5$452 USD
Retailer 4$470 USD
Retailer 3$559 USD
Retailer 11$562 USD
Retailer 10$789 USD
Retailer 7$920 USD
Retailer 9$1,066 USD
Reve Diamonds$1,144 USD

37 data points across 13 retailers

13 retailers$206 USD to $1,144 USD

A
Cheapest Retailer
-
$206 USD
Final sale: no returns
Retailer 2
-
$225 USD
View
Price last confirmed 25 days ago
B+
Retailer 3
-
$318 USD
View
A
Retailer 4
-
$389 USD
View
A
Retailer 5
-
$408 USD
View
A
Retailer 6
-
$452 USD
View
A
Retailer 7
-
$470 USD
View
A
Retailer 8
-
$559 USD
View
A
Retailer 9
-
$562 USD
View
B+
Retailer 10
-
$789 USD
View
B
Retailer 11
-
$920 USD
View
B
Retailer 12
-
$1,066 USD
View
Most Expensive
B
Reve Diamonds
1116C6968 · Nov 6
$1,144 USD
View
12 more retailers have this diamond
Prices start from $206 USDSave up to $938 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
$206 USD