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Cushion|Lab Grown|IGI

1.45ct D IF Cushion Lab Grown Diamond

D/IF • IGI LG780661400

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG780661400

Diamond specifications and retailer prices

From $364 USD
As of November 4, 2026
Save $2,316 USD (86%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $2,680 USD at Do Amore Diamonds · As of November 3, 2026
View at Do Amore Diamonds

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) and certified by IGI LG780661400 or 780661400. Listed at 13 retailers as of November 3, 2026, with prices from $364 to $2,680, a $2,316 spread on the same certified stone. Do Amore Diamonds lists it at $2,680. 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

1.45
Carat
D
Color
IF
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle38.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780661400
Dimensions6.70 × 6.58 × 4.31 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
6.70 mm6.58 mm1.45 ctD / IF
OriginLab Grown
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780661400
Side View
Table 62.0%Crown 34.1°Girdle: STK-VTKPavilion 38.9°Culet: NoneDepth 65.5%

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: Nov 4
Current: $2,680 USD|Low: $364 USD|High: $2,940 USD|Avg: $1,409 USD|-4.3%
Do Amore Diamonds
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
November 4, 2026
Retailer 5$364 USD
Retailer 3$535 USD
Retailer 12$541 USD
Retailer 13$613 USD
Retailer 9$682 USD
Retailer 4$858 USD
Retailer 2$1,016 USD
Retailer 14$1,164 USD
Retailer 8$1,656 USD
Retailer 6$2,141 USD
Retailer 7$2,155 USD
Retailer 10$2,173 USD
Retailer 11$2,440 USD
Do Amore Diamonds$2,680 USD

27 data points across 14 retailers

13 retailers$364 USD to $2,680 USD

A
Cheapest Retailer
-
$364 USD
Final sale: no returns
A
Retailer 2
-
$535 USD
View
A
Retailer 3
-
$541 USD
View
B+
Retailer 4
-
$613 USD
View
A
Retailer 5
-
$682 USD
View
A
Retailer 6
-
$858 USD
View
A
Retailer 7
-
$1,016 USD
View
B+
Retailer 8
-
$1,164 USD
View
B+
Retailer 9
-
$1,656 USD
View
B
Retailer 10
-
$2,155 USD
View
B
Retailer 11
-
$2,173 USD
View
B
Retailer 12
-
$2,440 USD
View
Most Expensive
B
Do Amore Diamonds
27-C1136EE09 · Nov 3
$2,680 USD
View
12 more retailers have this diamond
Prices start from $364 USDSave up to $2,316 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
$364 USD