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Cushion|Natural|GIA

0.51ct D SI1 Cushion Natural Diamond

VG • D/SI1 • GIA 6421683223

Certificate GIA 6421683223

Diamond specifications and retailer prices

From $1,125 CAD
As of November 6, 2026
Save $1,233 CAD (52%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $2,358 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 6421683223. Listed at 16 retailers as of November 4, 2026, with prices from $1,125 to $2,358, a $1,233 spread on the same certified stone. MOH London lists it at $2,358. 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

0.51
Carat
D
Color
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6421683223
Dimensions4.68 × 4.18 × 2.92 mm
L/W Ratio1.12
Top View
4.68 mm4.18 mm0.51 ctD / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6421683223
Side View
Table 59.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 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 6
Current: $2,358 CAD|Low: $1,234 CAD|High: $2,390 CAD|Avg: $1,677 CAD|-0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 5$1,287 CAD
Retailer 9$1,297 CAD
Retailer 4$1,301 CAD
Retailer 8$1,321 CAD
Retailer 6$1,533 CAD
Retailer 10$1,706 CAD
Retailer 2$1,848 CAD
Retailer 7$1,985 CAD
Retailer 3$2,037 CAD
MOH London$2,358 CAD

46 data points across 10 retailers

16 retailers$1,125 CAD to $2,358 CAD

B+
Cheapest Retailer
-
$1,125 CAD
Retailer 2
-
$1,287 CAD
View
Price last confirmed 16 days ago
B
Retailer 3
-
$1,291 CAD
View
B
Retailer 4
-
$1,297 CAD
View
B
Retailer 5
-
$1,301 CAD
View
Retailer 6
-
$1,321 CAD
View
Price last confirmed 8 days ago
B
Retailer 7
-
$1,333 CAD
View
B
Retailer 8
-
$1,393 CAD
View
B
Retailer 9
-
$1,393 CAD
View
B
Retailer 10
-
$1,449 CAD
View
B
Retailer 11
-
$1,506 CAD
View
B
Retailer 12
-
$1,533 CAD
View
B
Retailer 13
-
$1,848 CAD
View
Retailer 14
-
$1,985 CAD
View
Price last confirmed 32 days ago
B
Retailer 15
-
$2,037 CAD
View
Most Expensive
B
MOH London
D98507D3B · Nov 4
$2,358 CAD
£1,320 GBP
View
15 more retailers have this diamond
Prices start from $1,125 CADSave up to $1,233 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
$1,125 CAD