A spectacularly gorgeous yabby button preserved in gem quality crystal opal. This thing is huge, and would have come from a massive crayfish. This pieces is on display at the Australian Opal Centre's showroom in Morilla Street, Lightning Ridge.
A petri dish of smaller yabby buttons, many with opal colour.
"Yabby Buttons" made of yabby buttons. This was intended to be part of the intro graphic for the IDU episode, along with a timelapse of its construction, but ultimately wasn't used. It does appear on the YouTube video thumbnail, though! You can see the gorgeous gem-quality crystal yabbby button on the left. What a thing!