If you get all four of the above properties on point, you’re probably looking at a sapphire. Every other color we simply call sapphire. Ruby will also fit into the above since it’s simply a red variety of corundum.

So, before we move on a bit, let’s take a look at the quantifiable properties that will let you know a stone is a sapphire: While “fancy” sapphires aren’t the first thing most people think of, they’re a lot more common than the deep blue we normally associate with the gem. Corundum, the mineral which makes up sapphire, comes in a wide variety of colors. These properties will allow you to be relatively certain the stone is what you think it is, especially if you know where it came from.Ĭolor isn’t a useful identifier in this case. Few of us have the resources sitting in the garage to be 100% certain but you can get pretty close by checking a few properties of the stone.

What we’re checking here are the properties of the individual stone.

7 Gemstones That Change Color In Different Light.

So, let’s take a look at some ways you can learn how to identify rough sapphire! That said, there are a few different ways that you can get a good picture of what a stone is without having to take out a second mortgage for gemological equipment and classes. Not all crystals are easy to identify, and when we’re dealing with gemstones it can become a real mess.

Raw blue sapphire