Write a review Your name* Your e-mail* (Not for publication) Rating ★★★★★ Excellent ★★★★☆ Very good ★★★☆☆ Average ★★☆☆☆ Poor ★☆☆☆☆ Terrible Your review * * — Required information Koop Diamond Cutters Inc. ← View details 214 East 8th Street #4, Cincinnati, OH 45202 +1 513-621-2838