100% Brand new and high quality A fine-grained whetstone lubricated with oil, used for fine sharpening The Ruby sharpening stone and Agate Stone, For Polishing, Sharpening Can make mirror surface, mirror finish The Ruby Sharpening stone is made from sintered crystals of synthetic ruby Color: Red+White It's extremely hard, maintain their shape well and are resistant to wear Model: 3000 & 10000 Grit Material: Ruby stone and natural agate (as it is natural stone, some stone has other color like black or white dot etc, please pay attention) Dimension: 10cm x 2.5cm x 1cm Package Contents: 1 x Knife Sharpener Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/-1-3cm.