Nina Ricci Silver Toned Square Necklace

Necklace is Brand new, never used, tags on Designed by Nina Ricci Paris. Necklace is silver toned with a delicate braded chain featuring a square frame pendent with silver/gray toned block in center. Pendent measures 1" approx. Necklace is 8" approx. when done up, large lobster claw style closure. Beautiful in person! Please note the original tag says $25 and $5 but the valve today would be quite different. I don't know a lot about this necklace other than it was purchased by my grandma and found prior to her estate sale. Questions? Please ask prior to purchase.