Not a llb diamond as llb’s are blue diamonds containing Boron. No cubic crystal habit present and no trigons present. Get yourself some emery cloth from Harbor Freight Tools and rub your stones on it. If the paper eats your stone … it is not a diamond. If the stone eats your paper down to the cloth backing without a scratch on the stone, then you might have a diamond. Looks like white quartz to me though. You can always come to Las Vegas to my lab to have it positively identified.
Dear Joshua,
A thirty second (yes, 1/2 minute) RAMAN-532nm test would tell you 100% conclusively wether it is diamond or not. Put your money where your mouth is and send a sample to GIA, AGL or Stone Group Laboratories for a conclusive report. Or, I would be happy to do it for free in my lab in Bangkok and publish the results with screenshots of the RAMAN spectrum.
Finest regards,
Jeffery Bergman, SSEF SGC
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Beautiful. He can put his money where his mouth is in Las Vegas too, as I posted a $100 USD bet that his specimen was NOT a diamond! I have a Perkin Elmer PL-50B UV-VIS spectrometer that will excite the stone from 200nm (UV A, B, & C) to about 800nm … it will tell me if it is a diamond without fail in about 1 minute though! 
Great Post and I would love to see your results as well.
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Why do they look silver color
Because it is not diamond
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I am new to gems and have to say I don’t think I would even start to cut just because it is my stone. But may I ask with no money the $10 tester on eBay would be a good start. Visit any reputable jewler, most have a tester and will test for free, just ask. But mail is cheap and sending it insured to IGS would be your sure fire way.
I hope some day to be in your shoes as I would have gone to the jewlery already.
Hope that helps, I can’t wait to get one of my gemstones evaluated and valued.
Sheepdog,
They appear “silver” because of the way they are reflecting and refracting light. Believe it or not, they are actually transparent. I will try and produce some pictures to show you what I mean.
Thanks for the inquiry!
Joshua Williams
swkelley,
Thanks for the inquiry. However, the testers you find on ebay or in most jewelry stores use either heat or electricity to test the stone. Furthermore, they are usually calibrated to test set stones. Since my stone is rough (as well as, type II), common testers will not work. Unfortunately, every jeweler I have encountered (and it has been a lot!) have either wanted nothing to do with it, or they gave me their opinion without concrete evidence to back up their claims. That is why I joined this community, but I will keep pursuing until I find someone who will definitively prove, one way or other, what my stone is.