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Cushion|Lab Grown|IGI

1.78ct D FL Cushion Lab Grown Diamond

VG • D/FL • IGI LG784646410

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG784646410

Diamond specifications and retailer prices

From $1,097 SGD
$858 USD
As of November 1, 2026
Save $5,538 SGD (83%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $6,635 SGD at Do Amore Diamonds · As of November 1, 2026
View at Do Amore 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 very-good cut grade and certified by IGI LG784646410 or 784646410. Listed at 10 retailers as of November 1, 2026, with prices from $1,097 to $6,635, a $5,538 spread on the same certified stone. Do Amore Diamonds lists it at $6,635. 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
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle36.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG784646410
Dimensions7.92 × 6.52 × 4.42 mm
L/W Ratio1.21
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
7.92 mm6.52 mm1.78 ctD / FL
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG784646410
Side View
Table 60.0%Crown 35.9°Girdle: STK-THKPavilion 36.3°Culet: NoneDepth 67.8%

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 1
Current: $6,635 SGD|Low: $830 SGD|High: $8,795 SGD|Avg: $3,036 SGD|-24.6%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 6$1,097 SGD
Retailer 8$1,112 SGD
Retailer 10$1,161 SGD
Retailer 5$1,425 SGD
Retailer 9$1,478 SGD
Retailer 3$1,638 SGD
Retailer 7$3,829 SGD
Retailer 2$4,033 SGD
Retailer 4$4,705 SGD
Do Amore Diamonds$6,635 SGD

31 data points across 10 retailers

10 retailers$1,097 SGD to $6,635 SGD

A
Cheapest Retailer
-
$1,097 SGD
$858 USD
A
Retailer 2
-
$1,112 SGD
$870 USD
View
A
Retailer 3
-
$1,161 SGD
$908 USD
View
Final sale: no returns
A
Retailer 4
-
$1,425 SGD
$1,115 USD
View
A
Retailer 5
-
$1,478 SGD
$1,156 USD
View
A
Retailer 6
-
$1,638 SGD
€1,220 EUR
View
Retailer 7
-
$3,829 SGD
$2,995 USD
View
Price last confirmed 11 days ago
B
Retailer 8
-
$4,033 SGD
£2,484 GBP
View
B
Retailer 9
-
$4,705 SGD
$3,680 USD
View
Most Expensive
B
Do Amore Diamonds
27-CA699E0AF · Nov 1
$6,635 SGD
$5,190 USD
View
9 more retailers have this diamond
Prices start from $1,097 SGDSave up to $5,538 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
$1,097 SGD