Thank you for submitting your items for appraisal. The ring is in white metal with a central red stone. This item seems in solid sterling silver (925). Its head measures 25mm. The stone st on the ring is a oval shaped corundum, ruby variety with a briolette cut with dimensions of 7x9mm. Its color is intense red.
According to the pictures the ring is modern and handmade. It could be suitable also for men's since its size is 8US.
Feel free to contact us if you have further questions. Thanks