(The final quote above is bogus. Stevens did write "Death is the mother
of beauty," but the "perishable" part is from a lesser poet, Billy Collins.)
For the duende of this post's title, see a dance.
The dance suggests a 1956 passage by Robert Silverberg—
"There was something in the heart of the diamond—
not the familiar brown flaw of the others, but something
of a different color, something moving and flickering.
Before my eyes, it changed and grew.
And I saw what it was. It was the form of a girl—
a woman, rather, a voluptuous, writhing nude form
in the center of the gem. Her hair was a lustrous blue-black,
her eyes a piercing ebony. She was gesturing to me,
holding out her hands, incredibly beckoning from within
the heart of the diamond.
I felt my legs go limp. She was growing larger, coming closer,
holding out her arms, beckoning, calling—
She seemed to fill the room. The diamond grew to gigantic size,
and my brain whirled and bobbed in dizzy circles.
I sensed the overpowering, wordless call."
— "Guardian of the Crystal Gate," August 1956
For similar gestures, see Nicole Kidman's dance in "The Human Stain."