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Cushion|Natural|GIA

0.50ct D SI2 Cushion Natural Diamond

GD • D/SI2 • GIA 1518717105

Certificate GIA 1518717105

Diamond specifications and retailer prices

From $540 AUD
$379 USD
As of November 2, 2026
Save $199 AUD (27%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $738 AUD at 77 Diamonds · As of November 1, 2026
View at 77 Diamonds

About this 0.5ct natural cushion diamond

This 0.5ct 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 1518717105. Listed at 5 retailers as of November 1, 2026, with prices from $540 to $738, a $199 spread on the same certified stone. 77 Diamonds lists it at $738. 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

0.50
Carat
D
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1518717105
Dimensions4.62 × 4.47 × 2.90 mm
L/W Ratio1.03
Culet sizeNone
Key to symbols
Twinning Wisp, Feather
Top View
4.62 mm4.47 mm0.50 ctD / SI2
OriginNatural
CutGood
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1518717105
Side View
Table 60.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 64.9%

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 2
Current: $738 AUD|Low: $471 AUD|High: $784 AUD|Avg: $626 AUD|-4.1%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 1, 2026
Retailer 3$540 AUD
Retailer 6$564 AUD
Retailer 5$576 AUD
Retailer 2$631 AUD
Retailer 4$647 AUD
77 Diamonds$738 AUD

40 data points across 6 retailers

5 retailers$540 AUD to $738 AUD

B+
Cheapest Retailer
-
$540 AUD
$379 USD
Final sale: no returns
B+
Retailer 2
-
$576 AUD
MYR 1,647 MYR
View
B+
Retailer 3
-
$631 AUD
$443 USD
View
B+
Retailer 4
-
$647 AUD
SGD 614 SGD
View
Most Expensive
B+
77 Diamonds
CUSCPSKVQGASN · Nov 1
$738 AUD
£408 GBP
View
4 more retailers have this diamond
Prices start from $540 AUDSave up to $199 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.

B+
0.50ct Cushion
$540 AUD