Pearlescent lining?

  

I walked out the door at lunchtime and noticed unusual high clouds right away.  It felt like there was potential for something interesting to appear in the sky, so I brought my camera with me to eat lunch.

Sure enough, within a few minutes, the light started to look interesting off to the side of the sun...some iridescent clouds started to appear! 

Almost five years ago I photographed iridescent clouds for the first time (see post called "Iridescence in the air?" on 7 June 2021), but I wasn't sure when the conditions would be right to see them again.

Here are two more photos.  Note that the colors are more pearlescent and pastel shades, rather than following the colors of the rainbow. 

 

 

 

 

P.S.  Here's a brief description of iridescent clouds from the Cloud Appreciation Society (along with a gallery of other examples).

Layers

   

Close-up of a Red Abalone (Haliotus rufescens) shell, 9 September 2025

ADDENDUM (12 September 2025): There were a couple of requests to show more of the abalone shell.  In this case, the original photo was just a section of the rim of a shell, but here's the photo without any cropping:

 

  

P.S.  Note that I've found that the lighting matters a lot when photographing abalone iridescence.  Overcast days bring out the colors the most. 

Light waves

 

 

Male Anna's Hummingbird (Calypte anna) stretching wing and tail feathers.

A second before the photo above, the hummingbird was turned to the left.  You can see how much the angle changes the color of the head and throat feathers -- bright pink/rose colored (above), darker and more purplish (below):

 

 

Photographed in Cotati on 26 March 2025.