GEM n.
ruby, emerald, topaz, sapphire, beryl, spinel, etc., especially when cut and polished for ornament; a jewel. Milton.
GIMP n.
A narrow ornamental fabric of silk, woolen, or cotton, often with a metallic wire, or sometimes a coarse cord, running through it; -- used as trimming for dresses, furniture, etc. Gimp nail, an upholsterer's small nail.