Artyarns Merino Cloud Yarn is a similar yarn: hand wash, fingering (27-32 sts/4 in), 100 gram, and 437 yards. You may also like Lorna's Laces Lion and Lamb Yarn, which is another similar yarn: silk, hand wash, and 100 gram.
What about yarn that have the same look and feel? Find more yarn with a smooth / uniform texture, a low (drapey) twist, and is hand dyed.
Hopefully our suggested project ideas for Hand Maiden Sea Silk Yarn can help you come up with your next exciting new project idea!