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Cushion|Lab Grown|IGI

1.55ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG811638341

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG811638341

Diamond specifications and retailer prices

From $739 SGD
$578 USD
As of October 31, 2026
Save $3,980 SGD (84%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $4,719 SGD 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 LG811638341 or 811638341. Listed at 16 retailers as of October 31, 2026, with prices from $739 to $4,719, a $3,980 spread on the same certified stone. Brilliant Earth lists it at $4,719. 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
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.8°
Pavilion angle36.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811638341
Dimensions8.09 × 5.77 × 3.96 mm
L/W Ratio1.40
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
8.09 mm5.77 mm1.55 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811638341
Side View
Table 61.0%Crown 36.8°Girdle: STK-VTKPavilion 36.8°Culet: NoneDepth 68.6%

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 31
Current: $4,719 SGD|Low: $739 SGD|High: $6,343 SGD|Avg: $2,426 SGD|-25.6%
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
Retailer 15
November 2, 2026
Retailer 3$739 SGD
Retailer 11$946 SGD
Retailer 10$1,226 SGD
Retailer 8$1,270 SGD
Retailer 4$1,273 SGD
Retailer 2$1,414 SGD
Retailer 13$1,448 SGD
Retailer 5$1,913 SGD
Retailer 15$2,397 SGD
Retailer 6$2,662 SGD
Retailer 14$2,667 SGD
Retailer 12$2,949 SGD
Retailer 9$3,422 SGD
Retailer 7$3,517 SGD
Brilliant Earth$4,719 SGD

32 data points across 15 retailers

16 retailers$739 SGD to $4,719 SGD

A
Cheapest Retailer
-
$739 SGD
$578 USD
Final sale: no returns
A
Retailer 2
-
$946 SGD
$740 USD
View
A
Retailer 3
-
$1,226 SGD
€913 EUR
View
A
Retailer 4
-
$1,270 SGD
£782 GBP
View
A
Retailer 5
-
$1,273 SGD
$995 USD
View
A
Retailer 6
-
$1,414 SGD
ZAR 17,862 ZAR
View
A
Retailer 7
-
$1,448 SGD
$1,132 USD
View
A
Retailer 8
-
$1,913 SGD
$1,496 USD
View
B+
Retailer 9
-
$2,397 SGD
£1,476 GBP
View
B+
Retailer 10
-
$2,662 SGD
View
B+
Retailer 11
-
$2,667 SGD
$2,085 USD
View
B+
Retailer 12
-
$2,881 SGD
$2,253 USD
View
B+
Retailer 13
-
$2,949 SGD
$2,306 USD
View
B+
Retailer 14
-
$3,422 SGD
£2,107 GBP
View
Retailer 15
-
$3,517 SGD
$2,750 USD
View
Price last confirmed 12 days ago
Most Expensive
B
Brilliant Earth
21422949A · Oct 31
$4,719 SGD
$3,690 USD
View
15 more retailers have this diamond
Prices start from $739 SGDSave up to $3,980 SGD

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
$739 SGD