You can also get stainless steel chilling cubes. Perfect for all dinks, not just alcohol
Whiskey Stones Stainless Steel Ice Cubes - Urban Choice Products Reusable Whisky Chilling Rocks Metal Ice - Set of 8 with Tongs and Freezer Storage Tray for Beer Wine Cooler
You can also get stainless steel chilling cubes. Perfect for all dinks, not just alcohol
Soapstone whiskey chilling cubes are quite popular https://www.amazon.com/Spirit-Stones-Soapstone-Whiskey-10/dp/B00ARLHYMO