Modernist Clear Glass Double Triangle Pendant Necklace Architectural Brutalist

MODERNIST Glass Clear Double Triangle Layered Chain Necklace Minimalist Vintage? *Unsigned. Triangle pendants are glass and I think the chain is brass? Not certain though. No closure. I believe this is vintage but not positive. *Measures about 30" including top of top triangle (drop hangs 3.5" from top triangle to bottom triangle) IMPERFECTIONS: None. CONDITION: Good vintage condition. Color: Dark gray, clear/colorless