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.
Table Size â The size of the table of a fashioned diamond is expressed as a percentage of the stoneâs narrow-girdle diameter. On a round brilliant, it is measured from corner to opposite corner, rather than from flat side to flat side. Ratio: Is referred to the overall diamond in LENGTH to WIDTH. Girdle â The outer edge, or periphery, of a fashioned stone; the portion that is usually grasped by the setting or mounting; the dividing line between the crown and pavilion.