THE MATERIAL LIBRARY
Bumblebee Jasper
A carbonate-rich ornamental rock sold under a jasper trade name; it is not true quartz jasper.
Colors & patterns
Vivid yellow and orange areas contrasting with black, gray and cream.
Typical origins
The recognized material comes from Java, Indonesia.
Hardness
About 5 or below; composition varies
Choosing & setting this material
Porous material may be resin-filled. Its striking patterns suit protected focal pieces. Leave recutting and polishing to an equipped lapidary familiar with this material.
Care & cleaning
Clean gently with lukewarm water, a little mild soap and a soft cloth, then dry. Avoid steam, ultrasonic cleaners, harsh chemicals and sudden temperature changes, especially when treatments are unknown.
Origins above describe typical sources of the material, not the origin of an illustrated or stocked stone. Hardness measures scratch resistance, not resistance to breaking. Confirm the identity and treatments of the actual piece.
Further reading: Material reference · GIA: gem treatments