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Cushion|Lab Grown|IGI

1.78ct D FL Cushion Lab Grown Diamond

GD • D/FL • IGI LG784642240

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

Certificate IGI LG784642240

Diamond specifications and retailer prices

From $1,029 SGD
$805 USD
As of October 31, 2026
Save $5,465 SGD (84%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $6,494 SGD at Yadav Diamonds · As of October 30, 2026
View at Yadav Diamonds

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 standard cut grade and certified by IGI LG784642240 or 784642240. Listed at 11 retailers as of October 30, 2026, with prices from $1,029 to $6,494, a $5,465 spread on the same certified stone. Yadav Diamonds lists it at $6,494. 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

1.78
Carat
D
Colour
FL
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.1°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG784642240
Dimensions7.00 × 6.83 × 4.77 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
7.00 mm6.83 mm1.78 ctD / FL
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG784642240
Side View
Table 66.0%Crown 38.1°Girdle: STK-VTKPavilion 40.1°Culet: NoneDepth 69.8%

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: Oct 31
Current: $4,103 SGD|Low: $1,029 SGD|High: $8,795 SGD|Avg: $3,819 SGD|-13.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Yadav Diamonds
November 1, 2026
Retailer 10$1,029 SGD
Retailer 7$1,033 SGD
Retailer 2$1,161 SGD
Retailer 6$1,323 SGD
Retailer 11$1,464 SGD
Retailer 4$1,517 SGD
Retailer 9$3,829 SGD
Retailer 1$4,103 SGD
Retailer 5$4,705 SGD
Retailer 8$6,136 SGD
Yadav Diamonds$6,494 SGD
Retailer 3$7,891 SGD

27 data points across 12 retailers

11 retailers$1,029 SGD to $6,494 SGD

A
Cheapest Retailer
-
$1,029 SGD
$805 USD
A
Retailer 2
-
$1,033 SGD
$808 USD
View
A
Retailer 3
-
$1,161 SGD
$908 USD
View
Final sale: no returns
A
Retailer 4
-
$1,323 SGD
$1,035 USD
View
A
Retailer 5
-
$1,464 SGD
$1,145 USD
View
A
Retailer 6
-
$1,517 SGD
€1,130 EUR
View
Retailer 7
-
$3,829 SGD
$2,995 USD
View
Price last confirmed 11 days ago
B
Retailer 8
-
$4,103 SGD
£2,527 GBP
View
B
Retailer 9
-
$4,705 SGD
$3,680 USD
View
B
Retailer 10
-
$6,136 SGD
$4,800 USD
View
Most Expensive
B
Yadav Diamonds
12865081 · Oct 30
$6,494 SGD
$5,080 USD
View
10 more retailers have this diamond
Prices start from $1,029 SGDSave up to $5,465 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
1.78ct Cushion
$1,029 SGD