Synthetic ruby is real ruby (aluminum oxide), but it has been created in a laboratory using a technique known as flame fusion. Though these synthetic rubies can look attractive, they have a very low value in the market, literally a few dollars a carat.
Violet or purple sapphire is colored by vanadium.If blue is the most popular color for sapphire, it is fair to say that pink is the second most popular color. There are two reasons for this. First, pink gems in general are very popular, including pink diamonds, pink spinel and pink tourmaline.