Decorative design Mexican cantera opal necklace. The play-of-color in the cantera opal displays red and green. It shines even more in the sunlight. The photos were taken indoors, so they appear a bit dark. - Materials: Wax cord chain and natural stone - Design: Decorative pendant design - Size: The grid in the photo is 1cm. The cord is a little over 80cm. Thank you for looking.