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Cushion|Natural|GIA

0.51ct D SI1 Cushion Natural Diamond

ID • D/SI1 • GIA 6302501392

Certificate GIA 6302501392

Diamond specifications and retailer prices

From $1,957 NZD
As of November 5, 2026
Save $2,123 NZD (52%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $4,080 NZD 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 $1,957 to $4,080, a $2,123 spread on the same certified stone. MOH London lists it at $4,080. 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
Colour
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: $4,080 NZD|Low: $860 NZD|High: $4,140 NZD|Avg: $2,596 NZD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 4$860 NZD
Retailer 3$2,549 NZD
Retailer 2$2,917 NZD
MOH London$4,080 NZD

41 data points across 4 retailers

8 retailers$1,957 NZD to $4,080 NZD

B+
Cheapest Retailer
-
$1,957 NZD
B
Retailer 2
-
$2,525 NZD
View
B
Retailer 3
-
$2,525 NZD
View
B
Retailer 4
-
$2,549 NZD
View
B
Retailer 5
-
$2,616 NZD
View
B
Retailer 6
-
$2,917 NZD
View
B
Retailer 7
-
$3,673 NZD
View
Most Expensive
B
MOH London
28F4671AA · Nov 4
$4,080 NZD
£1,781 GBP
View
7 more retailers have this diamond
Prices start from $1,957 NZDSave up to $2,123 NZD

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
$1,957 NZD