The summer monsoon is associated with heavy rainfall. It usually happens between April and September. As winter ends, warm, moist air from the southwest Indian Ocean blows toward countries like India, Sri Lanka, Bangladesh, and Myanmar. The summer monsoon brings a humid climate and torrential rainfall to these areas.
It is for an online article. Maybe from a popular magazine's website.
The answer is:
In this case, Cecilia only decides to buy the necklace, knowing that the cost of diamonds depends only on the demand.
She will find a good price, because she knows the product availibility exceeds the demands, making the prices go low! when people start looking for this kind of diamond, the reverse will happen. The demands will exceed availability and prices will rise. Cecilia takes advantage of the fact that demand is low.