Thank you for viewing. This item was received from someone else and appears to have been used for handmade kumihimo (braided cords) as a hobby. Red threads photographed at the same time are shown together to compare their colors. Some black is reflected in the packaging, but this is from the bag itself. There are no labels or markings. I am not able to determine the condition or quality of the item. Please feel free to ask any questions in the comments, and I will do my best to investigate. It is highly likely that this is silk thread from Domyo, but there is no guarantee, so please purchase with that understanding. I am unable to make precise determinations of the detailed specifications or materials. Please check the photos for the condition. Please be aware that this item has been stored at home, so there may be some oversights.