This necklace is 20" in length and is composed of tiny black agate beads with 22k gold beads including the tube shaped toggle bead. 

 Faceted pyrite beads create this 19 1/4" strand.  Large ridged silver beads and tiny faceted black onyx beads enhance the subtle shine of the pyrite.  The clasp is silver.  

Oblong jasper beads showing reds, yellows and cream alternate with small disc shaped horn beads.  The gold beads are vintage Indian dowry beads with 22K gold over wax.  The clasp is 18k gold and it is 28" in length.

This necklace is definitely "eye popping"!  The beads are alternating round agate and bakelite - a type of plastic that started being used in jewelry in the 1920s and hit its really creative phase around WWII.  The toggle is a contemporary glass bead.  The piece measures 21 1/2".  

 White bone beads with dark strikes alternate with small onyx beads.  Designed in the same way as the petwear, the toggle closure is used both for fashion and utility.  It is 24" and is the companion piece to King.

 Bright blue turquoise slabs are accentuated by small dyed coral discs and large faceted silver beads.  The toggle is sterling silver.  It measures 20".  Check out Skylight for your small companion.  

This jasper is actually referred to as Picasso jasper.  These barrel shaped bead is highlighted by small white serpentine beads and there are 3 turquoise discs at the center.  The long grey glass beads is used for a closure.  It measures 18".  

 these black cushion shaped beads are jade.  They have been fashioned so that one side is smooth and the other has texture.  Tiny 22k gold beads alternate with the jade creating a very elegant strand.  The clasp is 18k and it measures 27".  These same jade beads were used in a pet necklace called Bow.