Follow Blue Nile's simple three-step process to build your own:

• Diamond Earrings
• Diamond Pendant
• Diamond Engagement Ring

with a high-quality certified diamond. Your diamond gift arrives in three to five business days, with a diamond grading report and a fine diamond jewelry appraisal. This is the easiest way for you to impress your lover.

Diamonds increase in price per carat at intervals like 1.0, 1.25, 1.5, etc. If you want a 1.0 carat, try 0.96 instead. Here's a search I did once:

• 0.94 Carat H color, VS2: $4756 (cost per carat=$5059)
• 1.04 Carat H color, VS2: $5491 (cost per carat= $5280)

Two diamonds listed above, close to 1.0 carat, you can't tell the difference in size, but look at the huge difference in price.