If you have decided that it is time to pop the question, then you need to make sure that you investigate how to purchase an engagement ring before you invest in such a large purchase. This is due to the fact that not only do you want to make sure the ring you purchase is perfect for your future bride, but because you need to make sure that it will stand the test of time the same way that your marriage will.

The truth is that a diamond can seem perfect, but every jeweler is different and their promise may not last as long as yours. Therefore, before you invest in an engagement ring here are the five things that you need to know about diamond engagement rings.

First of all, you need to look at the shank of the ring closely to make sure that it is actually stamped with a metal mark. A yellow gold or white gold ring should be marked with a PT or 18k, 14k, etc. Additionally, the metal should be polished without any rough casting pores.

Second, beware of retailers that are offering you a markdown off the suggested retail price that seems too good to be true. If it is a designer ring, make sure you look at the designer website to ensure that the retailer is actually authorized to sell the rings. If they are not, there is a good chance that you are buying a replica and will not receive any of the designer's warranty claims or product protections.

Third, when it comes time to looking at the diamond, a reputable seller will be able to take the diamond out of the setting and show you all of the flaws that are noted on its formal certification. In addition, you should ask that the diamond is weighed in front of you to assure that it is the carat weight that you are paying for. The store should be able to do this with several diamonds so that you can compare which is best for the ring you have chosen and your budget.

Fourth, for the best results you should only purchase an engagement ring from a company that has been in operation for at least ten years and can offer a warranty on the product for at least a year. Given the large expense of a diamond engagement ring, it is also worth your time to see if they have any complaints against them with the trading standards committee.

Finally, when all else checks out remember to purchase with your eyes and not with what the salesperson has told you. The salesperson should be helpful and willing as they help you find the perfect ring that fits your budget. If they keep pushing a sale item on you or tell you that a ring is the last one and will not last long you should leave immediately given the fact that it is likely this is a scam, and a scam is not the way you want to start your marriage out with.