27.15 mm x 27.15 mm x 3.60 mm square domed top flat bottom beveled sapphire crystal, generic (not genuine), fits Cartier®. Using generic crystals may devalue your watch.
* H. & W. Perrin Company Limited is independent of and not affiliated with or sponsored by Cartier®. Cartier® warranty does not apply to parts supplied by H. & W. Perrin Company Limited.