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March eNews Mini-Quiz


#1

Synthetic opals are distinguished by (a) hardness, (b) mosaic pattern, © layering, and (d) play of color. Put your answers here!


#2

{B} Mosaic pattern


#3

(B) mosaic pattern


#4

Mosaic pattern


#5

mosaic pattern. Inside mosaic there is a cellular, scale-like, snake skin, or chicken wire structure


#6

a)hardness. The synthetic opals contain 70-75% silica therefore they have increased durability and structural stabilty than the natural opals. They do not contain water either therefore they are more moisture and temperature resistent.


#7

Mosaic pattern