Dan, the base glass is muddy looking. It looks sort of like the base glass in a Peltier muddy. The reddish orange patch is covering more of the marble than the white. The white forms a "V". There are two more in this post that have a translucent base with the same reddish orange patch and a yellow patch that forms a "V". Both types have a second "V" in the muddy looking glass on the opposite side from the white or yellow. They seem to have the same construction as the "pea" family. Black eyed peas and sweet peas in different colors. I do not know of a name for them. I have never seen this color combination until I bought these in Sistersville. A friend saves Vitro Agate for me all year because he knows I love it. He had a plastic box of vitro for $20. In in were the bag of 40, 2 parrots, these marbles, lots of tigereyes. I didn't need the parrots. They were the large ones, close to an inch. I took only one of the one inch marbles. I think there were about a dozen of them including the parrots. Linda Simmons and I shared the marbles in the box because I didn't need all of them. She got all of the tigereyes except the bag, half of everything else and all but one of the one inch marbles. . I tried to pay my friend more because I knew the bag of 40 tigereyes was worth more than $20, but he wouldn't take it. He's been very good to me for many years. Does that help with the marbles?