Not all that glitters is gold. Appearances are deceptive; what looks valuable or attractive on the surface may prove worthless or disappointing on closer inspection. The proverb warns against being seduced by surface impressions.
The Italian form of this proverb derives from a tradition shared across European languages, traceable to the Latin 'Non omne quod nitet aurum est.' In English it is forever associated with Shakespeare's Merchant of Venice — fitting, since the play draws heavily on Italian merchant culture and the city of Venice itself. For Italian merchants, the saying had literal application: the trade in metals, coins, and jewelry required expertise in detecting forgeries and substitutes. Goldsmiths, moneychangers, and tax collectors all needed to know how to distinguish real gold from gilded copper or silver from tin. The saying then expanded into a general moral warning against confidence tricksters, glamorous but unreliable business partners, and showy goods of poor quality. Italian consumer culture, with its deep appreciation for genuine quality over imitation, has always found this proverb resonant. Today it is applied to misleading job offers, flattering people who prove untrustworthy, impressive-looking products that break quickly, and political promises that come to nothing.
Derives from the Latin 'Non omne quod nitet aurum est'; also cited in Dante's Alighieri's tradition and popularized across Europe through Italian merchant culture.
A mother warning her son about a charming new friend he has made
Capisco che ti ha fatto una bella impressione, ma non è tutto oro quel che luccica. Aspetta e conosci bene una persona prima di fidarti ciecamente.
Entiendo que te causó buena impresión, pero no todo lo que brilla es oro. Espera y conoce bien a una persona antes de fiarte ciegamente.
A buyer examining a supposedly luxury item at a market
— Guarda come brilla, dev'essere di qualità. — Non è tutto oro quel che luccica. Controlla il marchio prima di comprare.
— Mira cómo brilla, debe ser de calidad. — No todo lo que brilla es oro. Comprueba el sello antes de comprar.
An experienced employee reacting to an exciting job offer
Lo stipendio proposto sembra ottimo, ma leggi bene il contratto. Non è tutto oro quel che luccica — spesso ci sono clausole nascoste.
El salario propuesto parece estupendo, pero lee bien el contrato. No todo lo que brilla es oro — a menudo hay cláusulas ocultas.
A friend commenting on an acquaintance's apparently perfect life on social media
Sembra tutto perfetto sui suoi profili, ma la conosco da vicino. Non è tutto oro quel che luccica.
Todo parece perfecto en sus perfiles, pero la conozco de cerca. No todo lo que brilla es oro.