The Four Cs

• A diamond's four Cs---color, cut, clarity and carats---play a role in determining its price. The whiter the diamond, the bigger the carats, the greater its sparkle and the fewer flaws, the more the ring will cost.
  
  

Shape

• Some people confuse a diamond's cut---its ability to reflect light---with its shape, which refers to the stone's design. Cushion, round and oval are examples of gem shapes.
  
  

Settings

• These rings are typically designed in settings of gold, white gold and platinum.
  
  

Two Months' Salary Guideline

• The De Beers Company popularized the concept of the two months' salary guideline, which is a rule for prospective bridegrooms to follow when budgeting for an engagement ring.
  
  

Classic

• The diamond solitaire is considered a classic setting because of its simplicity and because the focus of the ring is entirely on the diamond.
  
  

Color

• The gem doesn't have to be a white diamond. Although rare, naturally colored diamonds can be found in hues like pink, green, orange and blue.