Probably obtained by diffusion treatment

Some natural inclusions when observed with a 10x lens

in caratura

probably obtained by beryllium diffusion treatment

the bottom one is a ruby

Ciondolo "Mamma Ghianda con figli" anello nodo cuore Probably obtained by diffusion treatmentIn Tuscany near my mother's house there is a huge oak tree, which every year prepares to produce lots of acorns, sometimes I find "bunches" of acorns, with one acorn that has reached maturity and others that have not yet fully grown, they are literally miniature acorns, with the dome perfectly formed, they look like families of acorns with parents and children next to them : D I made exact casts of some of these acorns and reproduced them in solid