The best replacement for garnet is ruby.

The best alternatives to garnet are rated as following:
★★★★★  ruby
★★★  jewel yams
★★  amethyst
★★  eiko
★★  maroon
★  aluminum oxide
★  eiko ff9
★  burgundy
★  aluminum oxide sandpaper
★  dagger
★  ruby gemstone
  carmelo
  umba river rhodolite garnet
  glass bead
  maroon color

Your alternative for garnet is not listed? Suggest!
Speaking about garnet, one probably shouldn't forget about diamond ring.

Other search terms related to garnet and their ratings are:
★★★★★ diamond ring
You have in mind a companion for garnet and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of garnet in all years. Click on graph for more.
garnet
ruby
jewel yams