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Cushion|Natural|GIA

1.21ct D SI1 Cushion Natural Diamond

VG • D/SI1 • GIA 5516718110

Certificate GIA 5516718110

Diamond specifications and retailer prices

From $3,896 CAD
$2,770 USD
As of November 6, 2026
1 retailer carries this diamond
Only listing: $3,896 CAD 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 1.21ct natural cushion diamond

This 1.21ct natural cushion sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 5516718110. Listed at a single retailer as of November 6, 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

1.21
Carat
D
Color
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.34°
OriginNatural
Grading LabGIA
CertificateGIA 5516718110
Dimensions6.37 × 5.80 × 4.04 mm
L/W Ratio1.10
Cert comments
Additional twinning wisps, additional clouds, pinpoints and surface graining are not shown.
Key to symbols
Twinning Wisp, Crystal, Cloud, Feather, Needle, Natural
Top View
6.37 mm5.80 mm1.21 ctD / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5516718110
Side View
Table 62.0%Crown 36.34°Girdle: ThickPavilionCulet: NoneDepth 69.7%

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: Nov 6
Current: $3,896 CAD|Low: $3,896 CAD|High: $4,487 CAD|Avg: $4,223 CAD|-13.2%
October 30, 2026
Brilliant Earth$3,896 CAD

10 data points across 1 retailer

1 retailer

B+
Brilliant Earth
14970317B · Nov 6
$3,896 CAD
$2,770 USD
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+
1.21ct Cushion
$3,896 CAD