Outer dimensions: ◻︎ Approximately 16.3mm, diagonal approximately 17.7mm Thickness: Approximately 4.6mm Color: Ivory Holes: 2 Quantity: 4 These were stored, and I believe they were removed from used clothing. There are some scratches, but the price is the minimum, so no discounts are possible. Discounts are possible for bulk purchases, so please comment if you are interested. I would appreciate it if those who are not overly concerned about minor imperfections would consider purchasing.