| 1600414btdwr ((OPTICAL CALCITE)), $5 MINIMUM BID, Nuevo Leon, Mexico, 4 x 3 x 2.5 cm, Miniature | |
 | Transparent Optical Calcite cleavage rhomb showing the property of double refraction where looking at print through the rhomb shows a double image. Changes as you rotate the rhomb. |
 |
<-- (BACK TO HOMEPAGE)
HOMEPAGE IS WHERE YOU CAN GET TO OTHER SECTIONS