Jews

to show one's mettle

stone with coloured veins

the sword with marks on it

show one's mettle or qualities, show the skill or advantage

a sharp and lustrous sword

marks on a mirror which look like a vortex

excellent, proficient

show one's talent or skill

one who knows about precious stone, connoiseure

a sword's round-shaped luster

of fine water or shine (steel, gem, etc.)

kill oneself together with wife and children when defeat is imminent in a battle, a custom of medieval Rajputs in India

(of talent) be manifested or shown, shine, one's defects or faults to be exposed

atomic fission

essence, matter, constituent, substance

falling at the feet (by way of salutation)

a pit or tank (not made of masonry) in which rain-water, collects, a pond, inundated land

men of merits and talents, people of substances

pious persons, ascetics, mystics

opportunity to express

modes of expression

Rosa Portugués, pink marble

form of expression

the eternal sleep, (met.) death