Cushion|Lab Grown|IGI

1.50ct D IF Cushion Lab Grown Diamond

ID • D/IF • IGI LG818678241

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG818678241

Diamond specifications and retailer prices

From $615 USD
As of October 30, 2026
Save $2,374 USD (79%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $2,989 USD at With Clarity · As of October 31, 2026
View at With Clarity

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 D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818678241 or 818678241. Listed at 15 retailers as of October 30, 2026, with prices from $615 to $2,989, a $2,374 spread on the same certified stone. With Clarity lists it at $2,989. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.50
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.8°
Pavilion angle35°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818678241
Dimensions8.26 × 5.85 × 3.84 mm
L/W Ratio1.41
Girdle conditionFaceted
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
8.26 mm5.85 mm1.50 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818678241
Side View
Table 56.0%Crown 33.8°Girdle: MED-STKPavilion 35°Culet: NoneDepth 65.6%

Caratlytics Score

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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: Oct 30
Current: $1,585 USD|Low: $615 USD|High: $2,989 USD|Avg: $1,521 USD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
With Clarity
October 30, 2026
Retailer 6$615 USD
Retailer 8$722 USD
Retailer 13$742 USD
Retailer 11$815 USD
Retailer 12$896 USD
Retailer 5$912 USD
Retailer 10$1,026 USD
Retailer 9$1,083 USD
Retailer 2$1,169 USD
Retailer 1$1,585 USD
Retailer 14$2,191 USD
Retailer 4$2,208 USD
Retailer 7$2,307 USD
Retailer 3$2,845 USD
With Clarity$2,989 USD

3 data points across 15 retailers

15 retailers$615 USD to $2,989 USD

A
Cheapest Retailer
-
$615 USD
Final sale: no returns
A
Retailer 2
-
$722 USD
£568 GBP
View
A
Retailer 3
-
$742 USD
HK$5,800 HKD
View
A
Retailer 4
-
$815 USD
View
A
Retailer 5
-
$896 USD
View
A
Retailer 6
-
$912 USD
View
A
Retailer 7
-
$1,026 USD
€977 EUR
View
A
Retailer 8
-
$1,083 USD
View
A
Retailer 9
-
$1,169 USD
ZAR 18,893 ZAR
View
B+
Retailer 10
-
$1,585 USD
A$2,439 AUD
View
B+
Retailer 11
-
$2,191 USD
View
B+
Retailer 12
-
$2,208 USD
View
B
Retailer 13
-
$2,307 USD
View
B
Retailer 14
-
$2,845 USD
£2,240 GBP
View
Most Expensive
B
With Clarity
818678241 · Oct 31
$2,989 USD
View
14 more retailers have this diamond
Prices start from $615 USDSave up to $2,374 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
$615 USD