It is narrated from Sayyidah Umm Salamah (may Allah be pleased with her) that she wore a necklace containing a few beads of gold. The Prophet (peace and blessings be upon him) saw it, disliked it and turned away from her, so she took the necklace off. Then he (peace and blessings be upon him) said: "What makes you safe from being made to wear, in its place, a necklace of beads of fire on the Day of Resurrection?"
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 19914