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.
For example, a .90 carat diamond will typically cost less on a price-per-carat basis than a full 1.00 carat diamond. Visually, they are difficult to distinguish. In fact, a smaller carat weight diamond may have a diameter equal to that of a heavier diamond, making it appear the same carat size when viewed from above.wo diamonds of equal carat weight may also appear very different in size based on the shape of the diamond. For instance, a 1 carat marquise tends to appear larger than a 1 carat round.