Thunder & Anvil pieces are made with integrity, with intention to be heirlooms. Sterling silver 92.5 % fine silver, the other 7.5% of the metal is an alloy (generally copper). This alloy is for hardness.
Sterling will slowly tarnish over time (due to the alloy), and it’s recommended you regularly polish your piece with a soft jewelry polishing rag.
Do not use harsh jewelry cleaners or chemicals on your piece(s). This could remove any intentional patina on your piece/damage your stone(s).
Please be mindful that vigorous activities can damage delicate stones (such as turquoise)