Looking for something a little more out of the ordinary? Maybe a touch of colour? There are endless possibilities when it comes to stone hues and colour tones – Just remember that you want your engagement ring to be timeless. So keep that in mind when making your choice. Below is a list of gemstones we love working with. The number next to the gemstone indicates the hardness of said stone, measured on the Moh’s hardness scale. The harder the stone, the longer its properties will last.