Bismuth crystal I've had lying around for awhile. I don't have a dedicated macro lens, so, for the moment, I'm stuck with a 50mm and some extension tubes, which doesn't do wonders for my depth of field.
ps-- great pic' ; and short depth of field has lead to a lovely backdrop effect
bismuth does crystallise into lovely geometric shapes. i've always loved them,but i've not often seen such gorgeous colours as youve managed to capture.------youve inspired me to have a go at growing some more again