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Cushion|Lab Grown|IGI

1.45ct D IF Cushion Lab Grown Diamond

ID • D/IF • IGI LG739546475

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG739546475

Diamond specifications and retailer prices

From $402 USD
As of November 4, 2026
Save $2,058 USD (84%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $2,460 USD at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.45ct lab-grown cushion diamond

This 1.45ct lab-grown cushion sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG739546475 or 739546475. Listed at 19 retailers as of November 4, 2026, with prices from $402 to $2,460, a $2,058 spread on the same certified stone. Brilliant Earth lists it at $2,460. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.45
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle35.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG739546475
Dimensions7.67 × 6.04 × 3.99 mm
L/W Ratio1.27
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
7.67 mm6.04 mm1.45 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG739546475
Side View
Table 61.0%Crown 36.5°Girdle: STK-THKPavilion 35.1°Culet: NoneDepth 66.1%

Caratlytics Score

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A+
Exceptional
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 4
Current: $2,460 USD|Low: $402 USD|High: $2,900 USD|Avg: $1,240 USD|-15.2%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 4, 2026
Retailer 5$402 USD
Retailer 10$595 USD
Retailer 11$630 USD
Retailer 8$721 USD
Retailer 6$769 USD
Retailer 4$796 USD
Retailer 2$1,088 USD
Retailer 7$1,743 USD
Retailer 9$2,100 USD
Retailer 3$2,202 USD
Brilliant Earth$2,460 USD

40 data points across 11 retailers

19 retailers$402 USD to $2,460 USD

A+
Cheapest Retailer
-
$402 USD
Final sale: no returns
A
Retailer 2
-
$512 USD
View
A
Retailer 3
-
$595 USD
View
A
Retailer 4
-
$630 USD
View
A
Retailer 5
-
$698 USD
View
A
Retailer 6
-
$721 USD
View
A
Retailer 7
-
$769 USD
View
A
Retailer 8
-
$796 USD
View
A
Retailer 9
-
$1,020 USD
View
A
Retailer 10
-
$1,088 USD
View
A
Retailer 11
-
$1,098 USD
View
B+
Retailer 12
-
$1,284 USD
View
B+
Retailer 13
-
$1,474 USD
View
B+
Retailer 14
-
$1,494 USD
View
B+
Retailer 15
-
$1,703 USD
View
B+
Retailer 16
-
$1,743 USD
View
B
Retailer 17
-
$2,100 USD
View
Retailer 18
-
$2,202 USD
View
Price last confirmed 31 days ago
Most Expensive
B
Brilliant Earth
16164200A · Nov 4
$2,460 USD
View
18 more retailers have this diamond
Prices start from $402 USDSave up to $2,058 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+
1.45ct Cushion
$402 USD