As far as we know this is a raw ruby quartz and is Not a manmade version. I can only say that that is what I was told and questioned our supplier in length. It is a beautiful stone when polished but this is a raw version. I could not find many details about this stone. Below is what I was able to find without it reverting to a man made information title.
While its name implies a red stone, ruby quartz is actually a richly veined stone of many of colors, including mauve, white, black and brown. The colorful quartz occurs naturally and is mined from the earth - in fact, some of this stone was found just a few years back in an African mine. However, the name is often applied to dyed or man made red and pink stones and many of the stones advertised as ruby quartz are not the naturally occurring form of this gem. The natural form of this quartz must be treated gently as it can be delicate and easier to break than many other stones used in jewelry, so there are some who prefer the faux versions, which are easier to handle.