I don't really see any dust or finger prints? The black spots are common in several types of Jade such as Chloromelanite from Burma,types of Nephrite Jade and even in some Jadite. These spots are caused by chlorite in the jade. The only really pristine clear green Jade is known as Imperial Jade. Aliceelody
Great work on all of them. I like the ivory one. A bit washed out photo but it looks like a good substitute for ALT. Ivory. Just one suggestion on the photos if you are going to do close ups like that you do need to wipe the pen down with a cloth to get the dust off and especially the fingerprints. Makes the photo stand out a lot better. Just a suggestion.