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Cushion|Natural|GIA

0.51ct D SI2 Cushion Natural Diamond

GD • D/SI2 • GIA 2537087525

Certificate GIA 2537087525

Diamond specifications and retailer prices

From $550 AUD
$386 USD
As of October 31, 2026
Save $210 AUD (28%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $759 AUD at 77 Diamonds · As of November 1, 2026
View at 77 Diamonds

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 SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2537087525. Listed at 3 retailers as of October 31, 2026, with prices from $550 to $759, a $210 spread on the same certified stone. 77 Diamonds lists it at $759. 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
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 2537087525
Dimensions4.70 × 4.38 × 2.92 mm
L/W Ratio1.07
Top View
4.70 mm4.38 mm0.51 ctD / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2537087525
Side View
Table 60.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 66.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $759 AUD|Low: $481 AUD|High: $800 AUD|Avg: $609 AUD|+17.4%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
November 1, 2026
Retailer 4$487 AUD
Retailer 3$550 AUD
Retailer 2$658 AUD
77 Diamonds$759 AUD

34 data points across 4 retailers

3 retailers$550 AUD to $759 AUD

A
Cheapest Retailer
-
$550 AUD
$386 USD
Final sale: no returns
B+
Retailer 2
-
$658 AUD
SGD 625 SGD
View
Most Expensive
B+
77 Diamonds
CUSCPFZJRFCMH · Nov 1
$759 AUD
£420 GBP
View
2 more retailers have this diamond
Prices start from $550 AUDSave up to $210 AUD

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
$550 AUD