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Cushion|Natural|GIA

0.40ct D SI2 Cushion Natural Diamond

VG • D/SI2 • GIA 2121779507

Certificate GIA 2121779507

Diamond specifications and retailer prices

From $858 CAD
£484 GBP
As of October 31, 2026
Save $847 CAD (50%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $1,705 CAD at MOH London · As of October 25, 2026
View at MOH London

About this 0.4ct natural cushion diamond

This 0.4ct natural cushion sits in the sub-half-carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2121779507. Listed at 4 retailers as of October 25, 2026, with prices from $858 to $1,705, a $847 spread on the same certified stone. MOH London lists it at $1,705. 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

0.40
Carat
D
Color
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishGood
SymmetryVery Good
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 2121779507
Dimensions7.79 × 3.62 × 2.24 mm
L/W Ratio2.15
Culet sizeNone
Top View
7.79 mm3.62 mm0.40 ctD / SI2
OriginNatural
CutVery Good
PolishGood
SymmetryVery Good
FluorescenceStrong
CertificateGIA 2121779507
Side View
Table 65.0%CrownGirdle: THK-ETKPavilionCulet: NoneDepth 61.8%

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 31
Current: $1,705 CAD|Low: $799 CAD|High: $1,724 CAD|Avg: $1,162 CAD
MOH London
Retailer 2
Retailer 3
Retailer 4
October 31, 2026
Retailer 2$858 CAD
Retailer 4$1,011 CAD
Retailer 3$1,102 CAD
MOH London$1,705 CAD

43 data points across 4 retailers

4 retailers$858 CAD to $1,705 CAD

B+
Cheapest Retailer
-
$858 CAD
£484 GBP
B+
Retailer 2
-
$1,011 CAD
£570 GBP
View
B
Retailer 3
-
$1,102 CAD
€751 EUR
View
Most Expensive
B
MOH London
0B4A19B34 · Oct 25
$1,705 CAD
£961 GBP
View
3 more retailers have this diamond
Prices start from $858 CADSave up to $847 CAD

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+
0.40ct Cushion
$858 CAD