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
YAG is an actonym for yttrium aluminum garnet, a man-made imitation
diamond. This imitation stone lacks the fire of a natural diamond.
Yellow gold is gold that has been alloyed with a mix of 50% copper
and 50% silver.
A form of Boulder Opal from Yowah (Queensland), Australia. It occurs
most often as nut-sized ironstone nodule containing pockets and
veins of vivid precious opal.
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.