This is a lovely antique pair of mother of pearl opera glasses, circa 1900 in date. They would make an ideal accessory for your next visit to the opera or theatre. Condition: In excellent condition and in working order, please see photos for confirmation of condition. Dimensions in cm: Height 4 x Width 11.5 x Depth 4 - when closed Height 14 x Width 10 x Depth 4 - perpendicular height Height 3.5 x Width 20 x Depth 4 - when fully extended Dimensions in inches: Height 2 inches x Width 4 inches x Depth 2 inches - when closed Height 5 inches x Width 4 inches x Depth 2 inches - perpendicular height Height 1 inch x Width 8 inches x Depth 2 inches - when fully extended Nacre also known as mother of pearl, is an organic-inorganic composite material produced by some molluscs as an inner shell layer; it is also what makes up the outer coating of pearls. It is strong, resilient, and iridescent. The outer layer of pearls and the inside layer of pearl oyster and freshwater pearl mussel shells are made of nacre. Both black and white nacre are and were used for design purposes. They were used as decorative motif used in cabinet making or silversmithing. The natural nacre may be artificially tinted to almost any colour. Nacre tesserae may be cut into shapes and laminated to a ceramic tile or marble base. The tesserae are hand-placed and closely sandwiched together, creating an irregular mosaic or pattern (such as a weave). The laminated material is typically about 2 mm thick. The tesserae are then lacquered and polished creating a durable and glossy surface. Our reference: 05598 Please feel free to email or call us (+44 20 8809 9605) to arrange a viewing in our North London warehouse. Shipping: We ship worldwide and deliver to Mainland UK addresses free of charge. A shipping cost to all other destinations must be requested prior to purchase. To request a shipping quote for the items in your cart, please click HERE. Delivery and return policy: We require that someone be home on the agreed delivery day if applicable, otherwise a redelivery fee will apply. In accordance with Distance Selling Regulations, we offer a 14-day money back guarantee if you are not satisfied with the item. The item must be returned in its original packaging and condition. Unless the item is not as described in a material way, the buyer is responsible for return shipping expenses. Buyers are fully responsible for any customs duties or local taxes that may be incurred on items sent outside of the European Union.