Pure iron is rarely used; frequently iron alloys or coated iron are more important.
Oxygen in its pure, gasseous form, as usually encountered on Earth is an invisible gas and cannot be seen.
I have never seen a dog Iron, I usually leave that work for women.
Most pure elements cannot be seen with the naked eye because they are typically in solid form and too small to be observed without a microscope. Some pure elements, like gold and copper, can be seen due to their distinct color and luster.
Iron appears silvery-gray before it is exposed to air. Once it rusts, it become reddish brown on the surface. Pure iron is found rarely because it oxidizes, instead it is extracted from ore using chemicals.
Calcium can give a bone it's color. Calcium often appears as a greyish white when seen in its most pure elemental form.
I have never seen it in a "tablet" form. It is usually a capsule and is typically prescribed to control seizures.
Iron pyrite, also known as fool's gold, does not rust in the same way that iron does. Instead of forming rust (iron oxide) when exposed to moisture and oxygen, pyrite can undergo oxidation to produce sulfuric acid and other byproducts, particularly in acidic environments. This process can lead to environmental issues, like acid mine drainage, but it does not result in the typical rusting seen with pure iron.
nocte dies
bronze and iron weapons
Yugoslavia and Albania were the cracks in the iron curtain.
This is a type of spina bifida but the mildest form. Usually no nerve damage occurs. It usually is seen with a tuff of hair.
All entities or beings in this cosmos or this universe exist in the form of energy and light. They exist in different realms, form or formless, seen or unseen, in different frequency, like the radio frequency where you need to tune in. Spiritual guide usually exist in a highly spiritual frequency which is pure and bright. Therefore, you need to be in that state of mind, i.e. you must be pure and highly evolved before you can contact spiritual guide who would alway advise you to do good, avoid evil.