These glasses were custom-made at a local Japanese optician during Japan's economic boom. The owner is deceased, so the type of stone is unknown. It appears to be a diamond to the untrained eye. A glasses cleaning cloth will be included as a bonus. They will be shipped in a case. These are glasses with stone decorations. - Frame Color: Gold - Lens Shape: Oval - Decoration: With stones - Temple Material: Plastic Thank you for looking.