This is a really neat find! it is light blue in color by the light of day but under a common poster (LongwaveUltra-Violet(LUV)) light, in a scapolite matrix with some minor mica content.
This stuff is in limited supply so get it while you can.
It measures 4.5″ by 3″ by 2.5″, and weighs in at one pound and a half, so shipping should be $12.50!! for locals within North America.