This item was found while cleaning out my grandmother's house, so the details are unclear. However, there's a note included, and it seems certain that it's lapis lazuli (with pyrite) from Afghanistan. There's a silver marking (SILVER) on the back. The stone measures approximately 1.1cm wide x 1.5cm long, and the total weight is 5g. The size is adjustable as shown in the photos, so you can rest assured. I will include a case, although it's not the original one. I'm not currently considering lowering the price. This is a used item, and I've polished the areas that were tarnished. There may be minor oversights, so please understand this before purchasing.