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Cushion|Lab Grown|IGI

1.78ct I VS1 Cushion Lab Grown Diamond

ID • I/VS1 • IGI LG662406596

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG662406596

Diamond specifications and retailer prices

From $1,534 SGD
$1,200 USD
As of October 31, 2026
1 retailer carries this diamond
Only listing: $1,534 SGD at Brilliant Earth
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Brilliant Earth

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 I colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG662406596 or 662406596. Listed at a single retailer as of October 31, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.78
Carat
I
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG662406596
Dimensions7.31 × 6.95 × 4.51 mm
L/W Ratio1.05
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.31 mm6.95 mm1.78 ctI / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG662406596
Side View
Table 61.0%Crown 34.8°Girdle: MED-THKPavilion 39.5°Culet: NoneDepth 64.9%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 31
Current: $1,534 SGD|Low: $517 SGD|High: $2,416 SGD|Avg: $1,326 SGD|-9.1%
Brilliant Earth
Retailer 2
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April 14, 2026
Retailer 4$524 SGD
Retailer 13$671 SGD
Retailer 2$732 SGD
Retailer 7$998 SGD
Retailer 9$1,005 SGD
Retailer 8$1,125 SGD
Retailer 11$1,234 SGD
Retailer 12$1,260 SGD
Retailer 5$1,372 SGD
Retailer 6$1,509 SGD
Brilliant Earth$1,534 SGD
Retailer 3$1,573 SGD
Retailer 10$1,831 SGD

55 data points across 13 retailers

1 retailer

B
Brilliant Earth
14233907A · Oct 31
$1,534 SGD
$1,200 USD
View

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B
1.78ct Cushion
$1,534 SGD