CaratHunter
Plans
Cushion|Lab Grown|IGI

3.18ct D SI1 Cushion Lab Grown Diamond

D/SI1

Diamond specifications and retailer prices

From $1,120 CAD
£632 GBP
As of October 30, 2026
1 retailer carries this diamond
Only listing: $1,120 CAD 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
Color
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

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $1,120 CAD|Low: $461 CAD|High: $1,412 CAD|Avg: $826 CAD|-20.7%
Moon Ocean
Retailer 2
October 30, 2026
Retailer 2$461 CAD
Moon Ocean$1,120 CAD

24 data points across 2 retailers

1 retailer

B+
Moon Ocean
NVL-66F84C218-932 · Oct 30
$1,120 CAD
£632 GBP
View

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
$1,120 CAD