Cushion|Natural|GIA

0.51ct D IF Cushion Natural Diamond

EX • D/IF • GIA 1517440925

Certificate GIA 1517440925

Diamond specifications and retailer prices

From $633 USD
As of November 4, 2026
Save $174 USD (22%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $807 USD at Blue Nile · As of November 5, 2026
View at Blue Nile

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 IF clarity (flawless or internally-flawless), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1517440925. Listed at 5 retailers as of November 4, 2026, with prices from $633 to $807, a $174 spread on the same certified stone. Blue Nile lists it at $807. Flawless clarity in sub-one-carat stones is rarely visible to the naked eye over VS1, so you are paying a meaningful premium for grade rather than appearance.

The 4Cs

0.51
Carat
D
Color
IF
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 1517440925
Dimensions4.69 × 4.42 × 2.92 mm
L/W Ratio1.06
Culet sizeNone
Key to symbols
Minor Details of Polish
Top View
4.69 mm4.42 mm0.51 ctD / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 1517440925
Side View
Table 63.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 66.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: $807 USD|Low: $559 USD|High: $889 USD|Avg: $731 USD|-9.2%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 5, 2026
Retailer 5$633 USD
Retailer 4$640 USD
Retailer 3$711 USD
Retailer 2$781 USD
Retailer 6$783 USD
Blue Nile$807 USD

41 data points across 6 retailers

5 retailers$633 USD to $807 USD

A
Cheapest Retailer
-
$633 USD
A
Retailer 2
-
$640 USD
View
Final sale: no returns
A
Retailer 3
-
$711 USD
View
A
Retailer 4
-
$781 USD
View
Most Expensive
A
Blue Nile
23876430 · Nov 5
$807 USD
View
4 more retailers have this diamond
Prices start from $633 USDSave up to $174 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.

A
0.51ct Cushion
$633 USD