These iceberg-styled spirit stones, hewn from luxurious stainless steel, will chill your drinks quickly without diluting them or imparting any flavour. The complex faceted shape increases the stones surface area meaning you can cool drinks rapidly, whilst the special gel inside melts slowly, keeping your beverage colder for longer. Simply rinse clean, re-freeze for 3-4 hours and they can be used over and over again, perfect for any whisky aficionado or cocktail connoisseur. Designed with Xavier Unwin. Available here.