1 Soldering more than 3 rings can cost $55 to $75. 2  The price for removing a stone from a ring can fall between $6 and $50 depending on the type of ring and its size. 3  Straightening or refinishing a ring can cost between $14 to $50. 4  For example, the website BCDeskin.com offers repair for various types of jewelries.
By matching the Measured Density to the Calculated Density, you are likely to find values similar to the following: Earth has a core filling about 65% of its interior. Venus: 65%, Mars: 40%, Mercury: 80%, The Moon: 40%.
Mercury is the smallest planet with the least mass and the least density. The gravity on Mercury is only 38% of the gravity on earth. Considering Mercury only has a radius of 4,879 km, which is barely any larger than the Moon, the gravity is high. The high gravity is due to the high density of the planet.