Large purple art glass vase with vintage silver glitter inclusions

Rare model, unique collector's item. Superb large vase with low round body and large, high flared neck, art glass, unsigned, attributed to Studio Glass, France, vintage 60s-70s. Murano style, modern design, mid-century. Transparent dark purple glass but appears opaque black from the outside, purple visible only when transparent. Blown with inclusion of silver glitter: iridescent petroleum stains and splashes and very particular shades, very beautiful. Irregular neck rim, a slight dent on the body. 28.5cm high, 17.18cm max body diameter, 14.5cm diameter at the neck. Very good overall condition, a few rare discreet scratches, notably on the body recess, perhaps original, small manufacturing bubbles in the glass not visible from the outside. No cracks or chips. Approximately 1.2kg.