Scroll to see break-even price per barrel for oil in 2015 for select oil producers, and click on a country's name for more details. modest oil-price recovery and currency devaluations have lowered breakeven prices for countries like Russia and Nigeria, but some petrostates still need oil prices above $100 a barrel to balance their budgets.
There are dozens of types of gemstones â including diamonds, colored gemstones, and pearls â each with a unique set of physical and optical properties. GIRDLE â The narrow band around the perimeter of a polished or faceted diamond or colored gemstone.
This removes any remaining surface scratches and gets the stone ready for the final polish. The secret of a excellent polish is an excellent pre-polish. Polishing the pavilion, including the girdle. A well cut bespoke gem should always have a polished girdle... its the attention to detail that makes all the difference.