Porphyrite - a mountain rock that does not contain quartz parts, formed from frozen volcanic lava. Lava stone. Porphyrite withstands prolonged heating, multiple temperature fluctuations and the effects of hot water, retains heat for a long time. Silica (known as metasilicic acid), calcium and magnesium oxide are found in the chemical composition of porphyrite. Porphyry has absolutely no harmful sulfur compounds. The admixture of various magmatic rocks when the porphyrite lava stone heats up creates a mountain air atmosphere in the bath. 

Porphyria vapor relieves and reduces headaches, promotes the normalization of arterial blood pressure. Porphyrite has been shown to strengthen male potency.

Key physical indicators:

• Color - dark gray, greenish or bluish gray.
• Density 2520 kg / m3
• Heat capacity 0.83 kJ / kg * ⁰С
• Compression strength limit up to 400MPa
• Coefficient of thermal expansion 5.4 (10-6 / K)
• Price for 20kg package.