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Cushion|Natural|GIA

0.51ct D SI1 Cushion Natural Diamond

EX • D/SI1 • GIA 6193146707

Certificate GIA 6193146707

Diamond specifications and retailer prices

From $1,405 CAD
As of November 5, 2026
Save $1,499 CAD (52%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $2,905 CAD at MOH London · As of November 2, 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 6193146707. Listed at 9 retailers as of November 2, 2026, with prices from $1,405 to $2,905, a $1,499 spread on the same certified stone. MOH London lists it at $2,905. 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6193146707
Dimensions4.63 × 4.62 × 3.22 mm
L/W Ratio1.00
Top View
4.63 mm4.62 mm0.51 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6193146707
Side View
Table 56.0%CrownGirdle: MED-STKPavilionCulet: NDepth 69.8%

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: $2,905 CAD|Low: $1,436 CAD|High: $2,940 CAD|Avg: $2,157 CAD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 6$1,436 CAD
Retailer 3$1,789 CAD
Retailer 5$2,073 CAD
Retailer 2$2,208 CAD
Retailer 4$2,447 CAD
MOH London$2,905 CAD

46 data points across 6 retailers

9 retailers$1,405 CAD to $2,905 CAD

B+
Cheapest Retailer
-
$1,405 CAD
B+
Retailer 2
-
$1,407 CAD
View
Retailer 3
-
$1,436 CAD
View
Price last confirmed 8 days ago
B
Retailer 4
-
$1,789 CAD
View
Retailer 5
-
$2,073 CAD
View
Price last confirmed 32 days ago
B
Retailer 6
-
$2,208 CAD
View
B
Retailer 7
-
$2,432 CAD
View
B
Retailer 8
-
$2,447 CAD
View
Most Expensive
B
MOH London
512FEF2A3 · Nov 2
$2,905 CAD
£1,626 GBP
View
8 more retailers have this diamond
Prices start from $1,405 CADSave up to $1,499 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
$1,405 CAD