costco .47 carat diamond earrings 599 after 100 off

https://m.costco.com/Round-Brilli…64818.html
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Features:
Metal: 14kt White Gold
Diamond Shape: Round Brilliant
Total Diamond Weight: 0.46 ctw
Clarity: VS2 (Very Slightly Included)
Color: I (Near Colorless)
Post Style: Screw backs