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Cushion|Natural|GIA

0.51ct D IF Cushion Natural Diamond

EX • D/IF • GIA 1517440925

Certificate GIA 1517440925

Diamond specifications and retailer prices

From $1,126 NZD
As of November 4, 2026
Save $310 NZD (22%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $1,436 NZD 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 $1,126 to $1,436, a $310 spread on the same certified stone. Blue Nile lists it at $1,436. 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
Colour
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: $1,436 NZD|Low: $994 NZD|High: $1,581 NZD|Avg: $1,300 NZD|-9.2%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 5, 2026
Retailer 5$1,126 NZD
Retailer 4$1,138 NZD
Retailer 3$1,265 NZD
Retailer 2$1,389 NZD
Retailer 6$1,393 NZD
Blue Nile$1,436 NZD

41 data points across 6 retailers

5 retailers$1,126 NZD to $1,436 NZD

A
Cheapest Retailer
-
$1,126 NZD
A
Retailer 2
-
$1,138 NZD
View
Final sale: no returns
A
Retailer 3
-
$1,265 NZD
View
A
Retailer 4
-
$1,389 NZD
View
Most Expensive
A
Blue Nile
23876430 · Nov 5
$1,436 NZD
$807 USD
View
4 more retailers have this diamond
Prices start from $1,126 NZDSave up to $310 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.

A
0.51ct Cushion
$1,126 NZD