@marx: where did you get this information?
I'm trying to get hold of Crystal shards close to me but I thought such things are not registered in the EDSM data.
Use this form, set the type as Crystal Shard, enter CDMR position, set "sort by distance" to CMDR position, set search radius to desired value, job done!

EDSM - Elite Dangerous Star Map
The Galactic Positioning System of Elite: Dangerous at your service.
