Vintage Brutalist Style Black Slate Look Metal Candle Holder

Vintage Brutalist Style Black Metal Candle Holder Double Pillar Holder. This is an estate item so I have no information on it. The bottom kind of looks like slate similar to the vintage tables, but It is some type of metal and heavy like cast iron? It shows wear, candle wax, and discoloration and I have not used any cleaner on it. Please ask any questions you may have. Thank you!