A bright blue opal from Caroit, Queensland, Australia, weighing 6,43 grams and imbedded in a hematite matrix, upon a chased bronze bell with brim and top in 935 Sterling silver. The pendulum made of a cobalt-chrome- iron-nickel-molybdenum-manganese alloy, which is extremely wear-resistant and has a light bluish lustre. As long as it is not heated above 200 degrees of Celsius, it is completely non-reactive and is used by the American dentists to make models, working it with bare hands. Bell hammer in fine silver. Stable forged construction, yet not to be used as a door bell: after all, it's silver and bronze. But it can be easily and permanently employed as a table bell or wharever else functional bell in the house. Light and strong sound with a fade out of ca. 12 seconds. The pitch is very close to B in the 6th octave.
Signed and hallmarked "Cu6Sn" inside.
Total weight: 75,5 grams
height: 103 mm
diameter at the brim: 49,5 mm
opal, bronze, silver, dental alloy