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Cushion|Lab Grown|IGI

3.18ct D SI1 Cushion Lab Grown Diamond

D/SI1

Diamond specifications and retailer prices

From $1,025 SGD
£632 GBP
As of October 30, 2026
1 retailer carries this diamond
Only listing: $1,025 SGD at Moon Ocean
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 Moon Ocean

About this 3.18ct lab-grown cushion diamond

This 3.18ct lab-grown cushion sits in the three to five carat band, graded D colour (colourless) and SI1 clarity (slightly-included) and certified by IGI. Listed at a single retailer as of October 30, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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

3.18
Carat
D
Colour
SI1
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
Dimensions8.76 × 8.65 × 5.53 mm
L/W Ratio1.01
Top View
8.76 mm8.65 mm3.18 ctD / SI1
OriginLab Grown
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI
Side View
Table 63.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 63.9%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 30
Current: $1,025 SGD|Low: $1,022 SGD|High: $1,292 SGD|Avg: $1,091 SGD|-20.7%
October 30, 2026
Moon Ocean$1,025 SGD

24 data points across 1 retailer

1 retailer

B+
Moon Ocean
NVL-66F84C218-932 · Oct 30
$1,025 SGD
£632 GBP
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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+
3.18ct Cushion
$1,025 SGD