This image has some related variations:

• Diamonds/Diamant:

• Diamond as transparent black border (pixel widths):

Image:Diamond_sheer_black_20.gif   Image:Diamond_sheer_black_27.gif   Image:Diamond_sheer_black_37.gif

• Diamond as transparent red border (pixel widths):

Image:Diamond_sheer_red_20.gif   Image:Diamond_sheer_red_27.gif   Image:Diamond_sheer_red_37.gif

• Diamond as solid red or black border (resizable width):

Image:Diamond_solid_red_20.gif   Image:Diamond_solid_black_20.gif

• X's:

• Letter "X" as transparent black marker (pixel widths):

Image:X_sheer_black_17.gif   Image:X_sheer_black_25.gif

• Letter "X" as transparent red marker (pixel widths):

Image:X_sheer_red_17.gif   Image:X_sheer_red_25.gif

• Letter "X" as solid red or black marker (pixel widths):

Image:X_solid_red_17.gif   Image:X_solid_black_17.gif

Image:X_solid_red_25.gif   Image:X_solid_black_25.gif

• Circles/Cercle:

• Circle as transparent blue, red or black border (pixel widths):

Image:Circle_sheer_red_33.gif   Image:Circle_sheer_black_33.gif

Image:Circle_sheer_red_31.gif   Image:Circle_sheer_black_31.gif

Image:Circle_sheer_blue_33.gif

• Circle as solid red or black border (resizable width):

Image:Cercle rouge 100%.gif

• SVG images are NOT transparent on some IE browsers, but see Template:Vector version available for File:Cercle rouge 50%.svg. Repeat:
  SVG images are NOT transparent on some IE browsers, but beware users who are SVG-thumping to force other users to link SVG images.