Cushion|Lab Grown|IGI

1.51ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG818639784

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG818639784

Diamond specifications and retailer prices

From $658 USD
£518 GBP
As of November 1, 2026
Save $3,382 USD (84%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $4,040 USD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 1.51ct lab-grown cushion diamond

This 1.51ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818639784 or 818639784. Listed at 9 retailers as of October 31, 2026, with prices from $658 to $4,040, a $3,382 spread on the same certified stone. Do Amore Diamonds lists it at $4,040. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818639784
Dimensions8.33 × 5.72 × 3.91 mm
L/W Ratio1.46
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
8.33 mm5.72 mm1.51 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818639784
Side View
Table 66.0%Crown 38°Girdle: STK-THKPavilion 40°Culet: NoneDepth 68.4%

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 1
Current: $4,040 USD|Low: $565 USD|High: $4,790 USD|Avg: $2,033 USD|-7.6%
Do Amore Diamonds
Retailer 2
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Retailer 17
November 1, 2026
Retailer 4$565 USD
Retailer 6$613 USD
Retailer 2$658 USD
Retailer 15$884 USD
Retailer 10$885 USD
Retailer 5$1,169 USD
Retailer 16$1,363 USD
Retailer 11$1,451 USD
Retailer 8$1,562 USD
Retailer 14$1,837 USD
Retailer 3$2,565 USD
Retailer 17$2,576 USD
Retailer 13$2,612 USD
Retailer 7$3,079 USD
Retailer 12$3,110 USD
Retailer 9$3,668 USD
Do Amore Diamonds$4,040 USD

21 data points across 17 retailers

9 retailers$658 USD to $4,040 USD

A
Cheapest Retailer
-
$658 USD
£518 GBP
A
Retailer 2
-
$884 USD
View
A
Retailer 3
-
$885 USD
View
B+
Retailer 4
-
$1,451 USD
View
B+
Retailer 5
-
$1,837 USD
View
Retailer 6
-
$2,565 USD
View
Price last confirmed 53 days ago
B+
Retailer 7
-
$2,612 USD
£2,057 GBP
View
B+
Retailer 8
-
$3,110 USD
View
Most Expensive
B
Do Amore Diamonds
27-D2E4A9CD4 · Oct 31
$4,040 USD
View
8 more retailers have this diamond
Prices start from $658 USDSave up to $3,382 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
1.51ct Cushion
$658 USD