Definition of nebula for English Language Learners. : 1  a cloud of gas or dust in space that can sometimes be seen at night. : 2  a group of stars that are very far away and look like a bright cloud at night.
That could be one reason the national average spent on an engagement ring, as well as diamond carat size, or weight, have been rising. The average spent on an engagement ring grew 3% to $5,598 last year from a year earlier, according to TheKnot. That's still down from 2009's average of $5,861, however. The average carat size for the center stone is just over 1 carat. The average total carat size for engagement rings, including any diamonds on the setting, is 2 carats, Miles said. 3. Weigh payment options.
A 2 carat diamond ring, like this David Marshall 2.05ct oval-cut diamond ring, will cost almost four times as much as a 1 carat diamond ring due to the fact that larger diamonds are rarer, especially when they are of such high quality.o illustrate this, we have placed pictures of a 1 carat diamond engagement ring and 2 carat diamond engagement ring side by side. While the 2 carat diamond doesn't look double the size, it will give off substantially more sparkle than its smaller sibling.