In 1955, the Aurora Borealis, a coating applied to crystal stones to produce a "rainbow of colors" effect was introduced.
The Aurora Borealis coating is 50 years old. 
It was invented in 1955 is definitely older than 50. 
( z1 coat :ARG2 ( z2 product :name ( z3 name :op "Aurora" :op "Borealis" ) ) :age ( z4 temporal-quantity :quant 50 :unit ( z5 year ) ) )