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Cushion|Lab Grown|IGI

1.55ct D FL Cushion Lab Grown Diamond

EX • D/FL • IGI LG743593779

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

Certificate IGI LG743593779

Diamond specifications and retailer prices

From $893 USD
As of November 2, 2026
Save $3,077 USD (78%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $3,970 USD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.55ct lab-grown cushion diamond

This 1.55ct 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 LG743593779 or 743593779. Listed at 14 retailers as of October 31, 2026, with prices from $893 to $3,970, a $3,077 spread on the same certified stone. Brilliant Earth lists it at $3,970. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.55
Carat
D
Color
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.3°
Pavilion angle38.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG743593779
Dimensions6.83 × 6.71 × 4.38 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
6.83 mm6.71 mm1.55 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG743593779
Side View
Table 60.0%Crown 37.3°Girdle: MED-THKPavilion 38.1°Culet: NoneDepth 65.3%

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 2
Current: $3,970 USD|Low: $893 USD|High: $4,910 USD|Avg: $2,149 USD|-19.1%
Brilliant Earth
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 2, 2026
Retailer 3$893 USD
Retailer 13$965 USD
Retailer 10$1,024 USD
Retailer 4$1,175 USD
Retailer 2$1,246 USD
Retailer 7$1,269 USD
Retailer 9$1,431 USD
Retailer 14$1,978 USD
Retailer 12$2,406 USD
Retailer 11$2,715 USD
Retailer 6$2,799 USD
Retailer 5$2,966 USD
Retailer 8$3,298 USD
Brilliant Earth$3,970 USD

40 data points across 14 retailers

14 retailers$893 USD to $3,970 USD

A
Cheapest Retailer
-
$893 USD
A
Retailer 2
-
$965 USD
View
A
Retailer 3
-
$1,024 USD
HK$8,000 HKD
View
A
Retailer 4
-
$1,175 USD
View
A
Retailer 5
-
$1,246 USD
£981 GBP
View
A
Retailer 6
-
$1,269 USD
€1,209 EUR
View
A
Retailer 7
-
$1,431 USD
ZAR 23,122 ZAR
View
B+
Retailer 8
-
$1,978 USD
View
B+
Retailer 9
-
$2,406 USD
View
Retailer 10
-
$2,715 USD
View
Price last confirmed 12 days ago
B
Retailer 11
-
$2,799 USD
View
B
Retailer 12
-
$2,966 USD
SGD 4,008 SGD
View
B
Retailer 13
-
$3,298 USD
£2,597 GBP
View
Most Expensive
B
Brilliant Earth
17456892Y · Oct 31
$3,970 USD
View
13 more retailers have this diamond
Prices start from $893 USDSave up to $3,077 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
1.55ct Cushion
$893 USD