Yesterday, I Had Tears (return)

Question

Totally inspired by Yesterday I had Tears by @MrPie, thinking I had an answer, it led to a poem of it's own...

Riddle Me That:

I'm filled with tears,
You won't see me cry;
I've been seen for years,
Yet I have no eye.

I'll always have tears,
From sorrow I'm free;
My father: The fire;
My mother: The sea.

My tears aren't like yours,
Not salty, nor blue,
Reminds you of wars,
And look at their hue
Though sadness they lack,
My tears are all black.

(response to @justforplaylists)

Though life I assist,
A life I've not had
I've never been kissed
I'm really not sad

(response to @Prim3numbah)

You may even have me,
Or one tear or two;
Doubt that you love me
I never scared you

(24hr clue)

If you have bought me,
My tears will be left,
They serve no purpose,
And leave me bereft

(48hr clue)

My naming was cruel,
My value is low–
I sound like a jewel,
I've not much to show

You may now have guessed
That I'm treated like dirt
Please don't be depressed
It gives me no hurt

(72hr 'give-away' clue)

If I am heated
It’s known that I grow
Being such treated
Could nigh pass for snow

---

I am wary of saying this but, to be honest, some of this is relies on poetic license. Truthfully,

I do not always have tears.

and therefore

I am not entirely filled with tears.

also

The original last two lines of verse one were pulled because, while they followed the original MrPie poem, they are probable way too obscure and obfuscatory.
Below, the light clears,
My face to the sky.

Answer 1

From the puzzle with hints you may be

perlite - a silicous hydrated volcanic rock.

I'm filled with tears, You won't see me cry; I've been seen for years, Yet I have no eye.

These are Apache tears which are often embedded in gray perlite.

My father: The fire; My mother: The sea:

You originate from the hydration of obsidian from lava.
Prim3numbah identified a volcanic connection.

My tears aren't like yours, My tears are all black:

These Apache Tears are black pebbles of obsidian.

For some further hints

Though life I assist, A life I've not had:
Perlite is used by gardeners to aerate compost, assisting plant growth.

If you have bought me, My tears will be left:
The black pebbles are mostly not included in bought perlite.

My naming was cruel, My value is low, I sound like a jewel:
Perlite sounds like Pearl, but it is inexpensive.

You may now have guessed, That I'm treated like dirt:
Perlite is mixed with soil for gardening purposes.

If I am heated, It’s known that I grow, Being such treated, Could nigh pass for snow:
When heated, trapped water vaporizes, and this causes the expansion of the material to many times its original volume. It becomes a brilliant white, due to the reflectivity of the trapped bubbles.

Answer 2

Is this perhaps

A volcano

I'm filled with tears

Filled with lava, which eventually becomes black, after "crying".

You won't see me cry

Not cry in the literal sense (like humans)

I've been seen for years, Yet I have no eye.

Volcano's been seen for a long time but don't have eyes.

Below, the light clears, My face to the sky

Below, filled with lava (light). A volcano face the sky.

I'll always have tears, From sorrow I'm free

A volcano will always have lava (tears) inside but never feel sorrow.

My father: The fire; My mother: The sea.

Not sure about this.. Lava is kinda like fire and volcanoes are mostly formed in oceans (submarine volcanoes?)

My tears aren't like yours, Not salty, nor blue

A volcano's "tears"(lava) are different from ours. Hot, not salty and not blue.

Reminds you of wars, And look at their hue Though sadness they lack, My tears are all black.

Explosions from wars reminds you of a volcano's eruption. They lack sadness and lava always become black (after cooling down).

And the last two lines;

I do not always have tears.

A volcano doesn't erupt most of the times.. so it doesn't always have "tears"

And therefore

I am not entirely filled with tears.

A volcano is not filled with lava all the way up to the top most of the time (except when it erupts).

Answer 3

Bit of a stretch, but are you

a poppy?

Reasoning

"Tears" refer to poppy seeds. There are species of poppies that grow on shorelines, that grow after wildfires, and which are worn to commemorate WWI.

However

These are all different species of poppies, and it doesn't make sense to have one or two poppy seeds.

Answer 4

Are you

The fog

I'm filled with tears, You won't see me cry;

Fog is made of water, just like tears.

I've been seen for years, Yet I have no eye.

Fog is a common appearance you can see in most places and times.

I'll always have tears, From sorrow I'm free;

Where the fog has passed the ground will be wet.

My father: The fire; My mother: The sea.

Fog comes from when the sun (fire) warms up water (the sea) until it evaporates.

My tears aren't like yours, Not salty, nor blue, Reminds you of wars,

In wargames where you cannot see the enemy's movement, it is hidden by "the fog of war."

And look at their hue Though sadness they lack, My tears are all black.

When the fog has dampened the earth, it becomes black.