Offering an outdoor pool and a restaurant, Eco-hotel Isla del Sol is located on Isla Grande Island in the Rosario Islands archipelago.
In general, a food is considered to have a high oxalate level if there are more than 10 milligrams of oxalates per serving of the food. High oxalate fruits include many berries, including blackberries, blueberries, raspberries and strawberries. Red or purple grapes also tend to contain a high level of oxalates. Plums, currants, kiwis and tangerines also top the list for high-oxalate foods.
1 Calcium stones. 2  Most kidney stones are calcium stones, usually in the form of calcium oxalate. 3  Oxalate is a naturally occurring substance found in food. 4  Some fruits and vegetables, as well as nuts and chocolate, have high oxalate levels. Most kidney stones are calcium stones, usually in the form of calcium oxalate. 2  Oxalate is a naturally occurring substance found in food. 3  Some fruits and vegetables, as well as nuts and chocolate, have high oxalate levels.