A diamond might be uniquely tough, but the special qualities of a diamond, such as durability, are what makes them so precious. Therefore, diamonds are vulnerable, particularly to theft or loss. With this in mind, it is particularly important that a diamond is not only properly cared for, but also kept secure. Luckily, there are several ways of doing this.
The immediate advantage that items of jewellery have over larger valuable items is that they are usually unless youre really lucky on the small side. Therefore, they can be stored in vaults or security boxes relatively comfortably. For precious jewellery such as larger diamond white gold rings and multi stone diamond rings this is especially advantageous, as often this kind of jewellery is saved for special occasions.
For engagement rings or wedding rings the situation is slightly different, as the question of security is less about proper storage, as they are items that are likely to be worn frequently, if not permanently.
However, this does not mean that your investment cannot be insured, and you should consider insuring diamond jewellery against loss or theft; remember diamonds might be tough, but they are not completely invulnerable.
Of course, whilst it is the unique beauty and inherent value of a diamond that it vulnerable to theft, it is also what makes it so precious, and is an ideal gift between lovers or friends.