All our works are unique. Concrete can show slight variations in color and texture. All concrete products will become more durable over time! The surface is ground with sandpaper, and you can see that the fine sand is covered like a star. https://c2.staticflickr.com/2/1830/42539754174_a15f6f4182_b_d.jpg https://c1.staticflickr.com/1/843/43209033662_0719753fb5_b_d.jpg Ingredients ▷ concrete. fine sand Specifications ▷ Diameter 10.2cm high 1.3cm Approximate measurement Color ▷ gray Weight ▷ 752g approximate measurement All of our works are handmade, so no two projects are exactly the same. Colors may differ slightly from your on-screen display due to various display settings Each has some slight difference If you are perfect, please do not subscript Concrete curing Here are some tips to keep your cement coasters intact. Concrete does not like impact, its edges are still fragile and require minimal maintenance Cleaning with a damp sponge and a gentle soap Do not bring hot objects close, such as a stove... The concrete anti-mission treaty also does not allow liquids to stagnate on the surface (soda, lemon, vinegar, wine...) and wipe with a soft cloth or sponge as soon as possible.