A very nice example of fluorite on (I believe) dolomite from recent finds in Xinjiang. I have been trying to find matrix examples, but they seem to be much less common that matrixless, and those I have found have typically been damaged.
This one has a crystal perfectly positioned on top of a contrasting off-site matrix, the crystal itself shows the multiple generations of growth that make these distinctive, with an etched purple core overgrown by zoned purple cubes. Very well balanced piece!