VK JEWELRY BY VESNA KORLAET.They are manufactured completely by hand using ancient techniques.24 k fine gold, which is lowered to 18 k to be worked.White gold, 24k fine gold plus palladium.Ounce platinum.Diamonds with certificate.Natural stones.Maintenance services.Rhodium, polishing and ultrasound.Guarantee for engagement rings in size.The guarantee on the setting of the stones is forever.