There will be total lunar eclipses on December 21 (2010), June 15 (2011), and December 10 (2011). Solar Eclipses (shadow of the Moon partially or fully blocking the Sun) can occur two to five times a year, but the majority are partial eclipses. Total eclipses occur about once every 18 months, and affect a very limited area. The maximum coverage of the solar disk lasts between 6 and 7.5 minutes.
1 Quarter carat or less diamond, $125 to $500 set in 14 carat gold. 2  0.3 to half carat diamond, $750 to $1,000 set in 18 carat gold or platinum, possibly more if ASG/GIA certified.  For diamonds up to 0.75 carat, or smaller ASG/GIA certified stones, $1,000-$2,000.
The calculated cost for the stone would be $2,100 (0.50 x $4,200). If the diamond price per carat for a 0.74 carat round brilliant cut is $7,100, the corresponding diamond cost would be $5,325.00 (0.74 x $7,100).he cost of a diamond is calculated on a âprice per caratâ basis and utilizes the following formula: Cost = Carat Weight x Diamond Price Per Carat. As an example, letâs assume that the price per carat for a 0.50 round brilliant diamond is $4,200.