This kind of post has been done before and a thousand times more on Youtube, but because I felt like it here is just a little collection of the voice actors of the Homeworld Gems we’ve seen so far and the Off Color gems singing/talking.
I unfortunately was not able to find any videos of Jasper, Aquamarine, Topaz or Rhodonite’s voice actors singing, so instead I provided links of them talking.
Yellow Diamond - Patti Lupone
Blue Diamond - Lisa Hannigan
The Rubies - Charlyne Yi
Yellow and Blue Pearl - Deedee Magno-Hall
Jasper/Carnelian/Skinny Jasper - Kimberly Brooks
Zoo Amethysts - Michaela Dietz
Aquamarine - Della Saba
Topaz - Martha Higareda
Yellow and Blue Zircon - Amy Sedaris (she doesn’t come in until 2:09 mark)
Rutile - Ashly Burch
Rhodonite - Enuka Okuma
Padparadscha - Erica Luttrell
Fluorite - Kathleen Fisher
And as a bonus, have Bismuth’s voice actor singing opera.