Soy candles have a cleaner burn without toxins and pollutants. Soy is biodegradable and made from soybeans, a natural renewable source. Soy burns with zero petro-carbon soot unlike paraffin wax and last up to 50 percent longer. These have flowers I grew and four types of stones rainbow fluorite for (calming) , amethyst for (intuition) , citrine for (happiness) and rose quartz for (love).