Stability of value is nonsense and non-e xistant. stability is an illusory practice by currency fixers like central banks. British pound fell 20% after Brexit. If you want to "stabilize value" you either form a basket of assets (diversify) or use derivatives (futures/options) to hedge. Value fluctuates always because people transact in an economy and create/destroy value.
Bitcoin is pretty much durable, the blockchain is very persistent.
If you want to see how reliable gold and Silver are in measuring value across 3000 years check pricedingold.com. Many goods and services that were offered in the past like a suit are still the same price in gold ounces/grams.
Bitcoin is very accurate in measuring value, up to 8 decimals.