Magnetic Hematite Drum Beads Quantity: 1 Strand = Approx 16 Inches. Approx 125 Beads Quality: Excellent Gloss: Excellent Type: Magnetic Hematite Drum Beads Size: 3 x 3 MM Type: Magnetic Hematite Drum Other: Holes measure under 1 MM wide ~~ I would like you to know all that I do on these beads so here goes :-) What is guass strength on these beads? I am sorry I do not know. They seem to be medium in strength. The quality is outstanding. No scratches , dings or dents. They are near perfection. Are these genuine Hematite? I would have to say that they are manmade. From what I have read and understand is that genuine hematite directly from nature can have some magnetic properties that can be measured but it is very slight and would not cause much of an attraction between the beads. I hope this info will help. We have a variety of this type of beads, plus many more in our eBay store!