If Spaatz has 2 less than half the number of gemstones as does Frankie, then half as many as Frankie is 1+2=3 gemstones
If 3 is half the number of gemstones on Frankie's collar, then Frankie has 3*2=<<3*2=6>>6 gemstones.
If Binkie has 4 times as many gemstones as Frankie, then Binkie has 4*6=<<4*6=24>>24
#### 24