The best replacement for sapphire is diamond.

The best alternatives to sapphire are rated as following:
★★★★★  diamond
★★★★  ruby
★★★  xfx
★★  gorilla glass
★★  mineral crystal
★★  freedom
★★  emerald
★★  tanzanite
★★  his
★  powercolor
★  msi
★  topaz
★  gigabyte
★  ati
★  gorilla glass 3
★  glass
★  chase freedom
★  mineral watch crystal
★  mineral glass
★  white topaz
★  visiontek
★  spearmint rhino
  blue diamond
  tanqueray
  emerald pokemon
  sapphire
  gecube
  cubic zirconia
  sapphire preferred
  now jade
  chase sapphire preferred
  xfx 5770
  blue sapphire
  jet black
  preferred
  capital one venture
  yellow diamond
  royal blue
  moissanite
  connect3d
  blood diamond
  jade
  gigabyte 6850
  ruby pokemon
  star sapphire
  diamonds
  radeon
  citrine
  pink diamonds
  neelam
  palmetto

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

Other search terms related to sapphire and their ratings are:
★★★★★ diamond ring
★★★★ diamonds ring
★★★ diamonds engagement ring
★★ diamonds earrings
★★ diamond pendant
★ diamond rings
★ diamond engagement rings
diamond
emerald
diamonds rings
blue topaz
diamond earrings
You have in mind a companion for sapphire and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of sapphire in all years. Click on graph for more.
sapphire
diamond
ruby