1970s colorblock bright orange goddess dress with amazing brooch

This is an amazing women's dress most likely from the 1970s. The dress is 100% polyester with a gorgeous draping goddess shape. The colorblocking is very dramatic and striking, especially the crystal and plastic brooch under the bust of the dress. Unfortunately, one small part of the brooch has broken off. Crystals have aureua boralis shine. Dress is in otherwise good condition. Measurements taken with the garment laying flat. Shoulders/yoke: 15 1/4 " Shoulder Straps: 3 3/4" Chest: 17 " Waist: 13 1/2" Hip: 19" Length: 55"