When a ring is more than fifty years old it is often referred to as "Antique." Many people feel that the most unique and charming are made before 1950. These rings are sometimes referred to as vintage engagement rings.
There have been many different eras in the history of rings that differ greatly from each other. Some eras are especially sought after by antique ring enthusiasts. The eras that have become more and more popular with time and that are most sought after now are:
1835 to 1900: Victorian Era - The rings of the Victorian era have very simple but also very elegant designs. There can also be very intricate designs from this era. Many Victorian era rings feature rows of diamonds cut with an extra facet on the bottom. Some Victorian era rings include pearls but these are not recommended if for an engagement ring due to the every day use of an engagement ring. Pearls can be harmed with everyday use.
1900 to 1920: Edwardian Era - Platinum became very popular during the Edwardian era. Rings from this era were generally lacy with scroll work, pierced shapes, and filigree detail on the mountings. It was also popular during this era to use brilliant sapphires along with diamonds.
1920 to 1930: Art Deco Era - The swinging 20s were a happening time and the rings of the era reflect the times they were made in. The rings of this era usually have a streamlined geometric look to them which coexists with the fashion trends of the time. They usually have colorful contrasting gemstones. This is often considered to be the very most popular era of all for antique diamond engagement rings.
Some antique engagement rings don't have diamonds. You should probably try to get one with a diamond because the other stones used are much easier to break and crack and are probably not as good a shape.
The craftsmanship of all rings is very important because it makes a huge difference in it's value. You may come across many replica rings which mimic the style of a true antique but which cannot come close to the quality and character of an older ring. You need to make sure you get a certified gemologist report stating the complete description of the ring including age, size, clarity, and cut. You want to make sure you get a ring that stands the test of time both physically and stylistically.
An antique diamond engagement ring is something to treasure. It is a work of art, and speaks volumes about the woman who owns it. It has so much character compared to the plain bands and settings of the modern rings, and is really more of a showpiece then a ring.
I highly recommend an antique diamond engagement ring if your women has shown an interest in antiques.
As always though it's important to try and find out exactly what your wife to be wants! Without necessarily asking her of course.