James Allen is the Best Online Store to Get a 1 Carat Diamond Ring and Custom Engagement Rings https://www.youtube.com/watch?v=x9cGG_TjZrM http://best1caratdiamondrings.com/ It's James Allen vs Blue Nile. The two best places to buy a 1 carat diamond ring. They both have custom engagement rings, but James Allen has the best 360° view.