These immaculate gemstone brooches are carefully studded with ammonite, amethyst, lapis, and druzy. Each is styled uniquely to compliment the stunning colors that glisten in the light. Gemstone brooches became all the rage starting in the Renaissance period. Elaborate brooches studded with numerous gemstones were popular among the noble and merchant class throughout Europe. The belief at the time was that each gemstone carried protective qualities to the wearer.