Y necklace: Usually 16 to 18 inches in length, this style of
necklace gets its name from its shape
which features a dangle forming a Y-shape around the neck.
Yellow gold: The most popular
gold alloy
made up of gold,
silver,
copper, and often zinc.
Yttrium: A silvery
metallic
element of the
boron-aluminum
group, found in gadolinite and other rare
minerals, and extracted as a dark gray powder. Not a rare earth but
occurring in nearly all rare-earth minerals,
used in various metallurgical applications, notably to increase the strength
of magnesium and
aluminum
alloys.
