Cushion|Natural|GIA

0.51ct D SI1 Cushion Natural Diamond

ID • D/SI1 • GIA 6302501392

Certificate GIA 6302501392

Diamond specifications and retailer prices

From $1,085 USD
As of November 5, 2026
Save $1,177 USD (52%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $2,262 USD 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 $1,085 to $2,262, a $1,177 spread on the same certified stone. MOH London lists it at $2,262. 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: $2,262 USD|Low: $477 USD|High: $2,295 USD|Avg: $1,438 USD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 4$477 USD
Retailer 3$1,413 USD
Retailer 2$1,617 USD
MOH London$2,262 USD

42 data points across 4 retailers

8 retailers$1,085 USD to $2,262 USD

B+
Cheapest Retailer
-
$1,085 USD
B
Retailer 2
-
$1,400 USD
View
B
Retailer 3
-
$1,400 USD
View
B
Retailer 4
-
$1,413 USD
View
B
Retailer 5
-
$1,450 USD
View
B
Retailer 6
-
$1,617 USD
View
B
Retailer 7
-
$2,036 USD
View
Most Expensive
B
MOH London
28F4671AA · Nov 4
$2,262 USD
£1,781 GBP
View
7 more retailers have this diamond
Prices start from $1,085 USDSave up to $1,177 USD

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
$1,085 USD