Difference between Iridescent and Opaline

IRIDESCENT vs OPALINE: NOUN

A semi-translucent glass, whitened by the addition of phosphate of lime, peroxid of tin, or other ingredients.
An opalina.
An opaline variety of yellow chalcedony.
Opal glass.
An opaline color or expanse.
Any of several minerals resembling opal

Having a play of lustrous rainbow-like colors
Brilliant, lustrous, or colorful in effect or appearance.
Having colors like the rainbow; exhibiting a play of changeable colors; nacreous; prismatic. See iridescence.
Producing a display of lustrous, rainbow-like colors; prismatic.
Brilliant, lustrous, or colorful.
Having a play of lustrous rainbow colors
Varying in color when seen in different lights or from different angles

Having a play of lustrous rainbow-like colors
Of, pertaining to, or like, opal in appearance; having changeable colors like those of the opal.
Resembling opal in its iridescence
Having a play of lustrous rainbow colors

Exhibiting or giving out colors like those of the rainbow; gleaming or shimmering with rainbow colors; more generally, glittering with different colors which change according to the light in which they are viewed, without reference to what the colors are; lustrously versicolor; of changeable metallic sheen, as certain birds, insects, minerals, glass, fabrics, etc.

Pertaining to or like opal; also, like some property of the opal; specifically, having an iridescence like that of the opal; bluish-white, reflecting prismatic hues, as the wings of certain insects.

Turquoise, Mauve, Shimmery, Translucent, Silvery, Chatoyant, Shot, Changeable, Colourful, Bright, Colorful, Nacreous, Opaline, Pearlescent, Opalescent

Blueish, Kyanite, Dichroic, Mirrorlike, Silvered, Micaceous, Ellipsoidal, Stippled, Aventurine, Lustres, Bright, Iridescent, Nacreous, Pearlescent, Opalescent

Turquoise, Mauve, Shimmery, Translucent, Silvery, Chatoyant, Shot, Changeable, Colourful, Bright, Colorful, Nacreous, Opaline, Pearlescent, Opalescent

Viridian, Blueish, Kyanite, Dichroic, Mirrorlike, Silvered, Micaceous, Ellipsoidal, Stippled, Aventurine, Bright, Iridescent, Nacreous, Pearlescent, Opalescent

Featuring a solid carbon case and an opaline black dial in contrast with the aqua blue chronometers, the piece adds geometric charm.
Opaline silver "Pie Pan" dial, applied index hour markers with the months of the year in-between.
He had deep opaline green eyes and wavy ebony hair with a touch of gray at the temples.
It was capped with a meaningful remark from TKM moderator and Department of Communication faculty Opaline Santos.
This Venini White Opaline Vase with a Aqua Tint is no longer available.
Extraordinary Italian brass and light grey opaline sphere Murano glass.
In a mixed flock, this means intervening to pair Opaline with Opaline, Crested with Crested, etc.