Spot price, purity, premium
How a precious metal entry actually becomes a number on your dashboard
Three numbers determine what a coin or bar is worth on your dashboard: the daily spot price for the metal, the fine-weight after applying the purity factor, and the optional collector premium you assign manually. Manalyx keeps these inputs separate so you always understand which part is market-driven and which part is a personal valuation choice. Spot prices are stored per gram and multiplied by the actual fine-weight, never by the gross weight.
Why fine-weight, not gross-weight, drives the value
A 1-oz Krugerrand weighs 33.93 g gross but only contains 31.10 g of pure gold (91.67 % purity). Multiplying gross weight by spot price would inflate the figure by ~9 %. Manalyx applies the purity factor automatically per piece, so the displayed value tracks the actual metal content the market cares about.
Numismatic premium kept transparent and editable
For coins where collector value exceeds melt value (e.g. older Wiener Philharmoniker, certain proof issues), you can add a manual premium on top of the spot calculation. The premium shows as its own line on the position so you can answer the question "how much of this is metal, how much is collector?" at a glance.
Storage location and physical inventory tagging
Each entry can carry a storage tag (home safe, bank deposit box, vault provider). The tag never affects the value but lets you filter the precious-metals view by location, which becomes useful once your stack outgrows a single drawer.