What to Spend Gold on

Ideas for things in the market or city for adventurers to spend their gold on.

Gold:

Gemstone (50 gp) - quartz (yellow) and a vial of antitoxin
Gemstone (50 gp) - onyx (pure white), a light crossbow and a halberd
Gemstone (100 gp) - tourmaline (transparent brown)
2 x heavy infantry starter kit (ring mail, maul, sixteen javelins, dagger)
5 pounds of saffron and hire of an untrained hireling for 125 days
A suit of chainmail and a mastiff
Gemstone (50 gp) - chrysoprase (translucent green), a light crossbow and hire of an untrained hireling for 125 days
2 x heavy infantry starter kit (ring mail, maul, sixteen javelins, dagger)
5 shields with different emblems, a component pouch and 25 bags of 1000 ball-bearings
250 ft of silk rope and a camel