gendered.

Electrum is a metal and hath that name, for in the sunbeam it shineth
more clear than gold or silver. And this metal is more noble than
other metals. And hereof are three manners of kinds. The third manner
is made of three parts of gold, and of the fourth of silver: and kind
electrum is of that kind, for in twinkling and in light it shineth
more clear than all other metal, and warneth of venom, for if one dip
it therein, it maketh a great chinking noise, and changeth oft into
divers colours as the rainbow, and that suddenly.

Heliotrope is a precious stone, and is green, and sprinkled with red
drops, and veins of the colour of blood. If it be put in water before
the sunbeams, it maketh the water seethe in the vessel that it is in,
and resolveth it as it were into mist, and soon after it is resolved
into rain-drops. Also it seemeth that this same stone may do wonders,
for if it be put in a basin with clear water, it changeth the sunbeams
by rebounding of the air, and seemeth to shadow them, and breedeth in
the air red and sanguine colour, as though the sun were in eclypse and
darkened. An herb of the same name, with certain enchantments, doth
beguile the sight of men that look thereon, and maketh a man that
beareth it not to be seen.

Though iron cometh of the earth, yet it is most hard and sad, and
therefore with beating and smiting it suppresseth and dilateth all
other metal, and maketh it stretch on length and on breadth. Iron is
gendered of quicksilver thick and not clean, full of earthy holes, and
of brimstone, great and boisterous and not pure. In composition of
iron is more of the aforesaid brimstone than of quicksilver, and so
for mastery of cold and dry and of earthy matter, iron is dry and cold