Thank you, JW! Hoping for @Jason 's opinion, too 
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I have read several back posts on variscite and general internet info on the subject. Have not seen a stone with the yellow circle like matrix anywhere else. Seems some sites use green turquoise (Damele?) and variscite terms interchangeably? I understand that the chemical composition is the true difference. Is there a somewhat reliable way to tell by sight? Is variscite generally a yellowish warm toned green vs a cool tealish green?
I appreciate hearing any and all opinions and any links to further info would be great!