These are "crystal I think 10 pieces! and Glass" knife rests, a classic table accessory from the 19th and early 20th centuries that serves to keep the table linen clean during dining.
Function: They prevent knives from staining the tablecloth when placed on the table between courses.
Material: These pieces are made of crystal or glass and feature a cut diamond pattern.
History: Knife rests fell out of use around 1970-1980, but are popular again today as collector's items.
Use: They are traditionally placed to the right above the plate.
Color is TRANSPARENT.
Specifications
ConditionGoodColorsWhiteMaterialCrystal, GlassNumber of items29Height10 cmWidth2 cmDepth2 cmSigns of usageDents