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Cushion|Lab Grown|IGI

1.78ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG837628353

Shape and cutting style on the report: Cushion mixed cut

Certificate IGI LG837628353

Diamond specifications and retailer prices

From $2,653 SGD
$2,075 USD
As of November 1, 2026
5 retailers carry this diamond
Most expensive: $5,416 SGD at Taylor and Hart · As of October 5, 2026
View at Taylor and Hart

About this 1.78ct lab-grown cushion diamond

This 1.78ct 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 LG837628353 or 837628353. Listed at 5 retailers as of November 1, 2026. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.78
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.2°
Pavilion angle50.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG837628353
Dimensions8.32 × 5.76 × 3.73 mm
L/W Ratio1.44
Girdle conditionFaceted
Culet sizeLarge
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
8.32 mm5.76 mm1.78 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG837628353
Side View
Table 70.0%Crown 39.2°Girdle: MED-STKPavilion 50.1°Culet: LargeDepth 64.8%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 1
Current: $2,320 SGD|Low: $1,552 SGD|High: $5,416 SGD|Avg: $3,088 SGD|+0.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Taylor and Hart
October 5, 2026
Retailer 11$1,552 SGD
Retailer 2$1,760 SGD
Retailer 8$1,777 SGD
Retailer 10$1,820 SGD
Retailer 6$2,058 SGD
Retailer 1$2,320 SGD
Retailer 4$2,653 SGD
Retailer 5$2,867 SGD
Retailer 3$4,620 SGD
Retailer 7$4,978 SGD
Retailer 9$5,325 SGD
Taylor and Hart$5,416 SGD

9 data points across 12 retailers

5 retailers

B+
Cheapest Retailer
-
$2,653 SGD
$2,075 USD
Retailer 2
-
$2,867 SGD
ZAR 36,225 ZAR
View
Price last confirmed 30 days ago
Retailer 3
-
$4,620 SGD
$3,614 USD
View
Price last confirmed 27 days ago
Retailer 4
-
$5,325 SGD
£3,280 GBP
View
Price last confirmed 27 days ago
Most Expensive
Taylor and Hart
SEZCAYV · Oct 5
$5,416 SGD
$4,237 USD
View
Price last confirmed 28 days ago
4 more retailers have this diamond
Prices start from $2,653 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.

B+
1.78ct Cushion
$2,653 SGD