Simbircite ring Simbircite is a very rare stone: it's only found in one place in the world. This exceptional gemstone was named after the city of Ulyanovsk (formerly known as Simbirsk) in Russia. Simbircite is actually an ammonite fossil with small bands of pyrite and the most amazing flowy patterns. Size and care: - This rich amber, gold and deep brown coloured simbircite gemstone is set in 925 sterling silver and adorned with silver dots on the side and ring band. - The ring band is 5 mm wide and adjustable in size. - The ring is 4 x 2 cm (0.78 x 1.57 inch) - Simbircite is quite soft gemstone, so always take it off while showering and do not leave it out in the sun. If you like jewelry with eye-catching stones, check out the fossil coral and agate ring or this kammererite and ruby ring. Shop here for more edgy jewelry: - Extravagant rings - Eccentric necklaces - Elegant earrings - Exciting bracelets All Roff Jewellery products are gift boxed and shipped worldwide. Contact me if you're looking for something custom made or if you have any questions!