CaratHunter
Plans
Cushion|Natural|GIA

0.51ct D SI1 Cushion Natural Diamond

ID • D/SI1 • GIA 6302501392

Certificate GIA 6302501392

Diamond specifications and retailer prices

From $1,526 CAD
As of November 5, 2026
Save $1,655 CAD (52%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $3,182 CAD at MOH London · As of November 4, 2026
View at MOH London

About this 0.51ct natural cushion diamond

This 0.51ct natural cushion sits in the half to three-quarter carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6302501392. Listed at 8 retailers as of November 4, 2026, with prices from $1,526 to $3,182, a $1,655 spread on the same certified stone. MOH London lists it at $3,182. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.51
Carat
D
Color
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6302501392
Dimensions4.65 × 4.43 × 3.01 mm
L/W Ratio1.05
Top View
4.65 mm4.43 mm0.51 ctD / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6302501392
Side View
Table 64.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 67.8%

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: Nov 5
Current: $3,182 CAD|Low: $671 CAD|High: $3,228 CAD|Avg: $2,023 CAD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 4$671 CAD
Retailer 3$1,988 CAD
Retailer 2$2,274 CAD
MOH London$3,182 CAD

42 data points across 4 retailers

8 retailers$1,526 CAD to $3,182 CAD

B+
Cheapest Retailer
-
$1,526 CAD
B
Retailer 2
-
$1,969 CAD
View
B
Retailer 3
-
$1,969 CAD
View
B
Retailer 4
-
$1,988 CAD
View
B
Retailer 5
-
$2,040 CAD
View
B
Retailer 6
-
$2,274 CAD
View
B
Retailer 7
-
$2,864 CAD
View
Most Expensive
B
MOH London
28F4671AA · Nov 4
$3,182 CAD
£1,781 GBP
View
7 more retailers have this diamond
Prices start from $1,526 CADSave up to $1,655 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+
0.51ct Cushion
$1,526 CAD