Assume you are past all that and are now at the point of order. While there, you happen to see that the ring will take a month or more to get to you. Do you wait? Or do you find quicker options to lay hands on your 5-carat black diamond ring? If the latter, you will need to find a pre-made diamond ring. These may not have the exact specification you wish for, but might just be the next best thing. However, if you want the perfect ring, matching carefully selected parameters, then waiting is required. With engagement rings, there is generally a process where the components of the ring are cast from your metal of choice. After this, the cast ring is prepped, mounted, and sized. Following all that, your diamond is set in the way you specified, and then this is polished. This can take up to weeks when done properly. A great deal of attention to detail is needed, which is why there is almost no sense in hurrying it along.