“Do you want to see what a $300,000 dollar diamond looks like?” Justin Koop asks, eyes wide with excitement. The third-generation jewelry maker has a contagious energy: Whether he’s telling his family ...
As a third-generation jeweler with 20 years of experience, Justin Koop, vice president and graduate gemologist at Koop Diamond Cutters, sure knows his way around a custom wedding ring. What advice ...
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