Multi-Color Diamond

I won this gorgeous gemstone along with my other gem listings in one of those storage locker auctions! I am not a gemstone expert so I took them to a pawn shop and paid to have about 100 of them tested on a Precidium II. All of the ones that I had tested turned out to match their identification. I am posting all of my gems at less than wholesale prices. After paying to get them tested, I was told that in order to sell them I should pay to have them graded and THEN pay to get them appraised. I started to realize that I will never get around to selling them because I have a career that I love and don’t have the time (or the money!) to devote to all of that. I've had them stored in a locked closet for over ten YEARS at this point so I thought that I would just sell them here for about what it costs to get tested by a professional, taking into consideration the size and cut of each gem. I am showing that this gem has * Diamond * hardness to it on my tester! This was in a box labeled lab diamonds. They were each wrapped in a paper envelope with a kind of glassine paper inside. I have been informed that Moissanite also registers as diamond so the low price is due to the fact that I am unable to tell the difference, so I am asking for moissanite prices.