• Gold or silver?
• Classic traditional, sleekly modern, individually handcrafted?
• Rings, necklaces, earrings, bracelets, brooches, pendants?
• Diamonds, precious stones, semiprecious stones, birth stones?

• If you know that she likes hoop earrings, but she does not have any that are diamond hoops, then go for that. Practically a sure thing!
  
• If you know that her favorite pair of earrings is purple amethyst, but she does not have a nice necklace pendant or bracelet to go with those earrings, try for a complimentary piece.
• If you see that she only likes white gold rather than yellow gold (or the opposite), try to stick with the type of metal that she likes most because that will go better with the rest of her collection.
• Think about size. Does she tend to wear large, small, or medium earrings? Or does she wear all kinds? Identify her style in jewelry size and try to stick with that, especially if you are new to jewelry buying for your wife.
• If her jewelry collection contains a wide range of unique designs, then by all means try something more modern or cultural.
• The safest approach, if you are unsure, is to pick out a style that she already likes and wears often, but then swap in a new stone that she does not already have. A great place to find lovely classic styles is here.

Remember, a gift of jewelry is a very special present that is often cherished for a lifetime. Whenever she wears it, she will think of you.

You are giving her something beautiful because she is beautiful to you, inside and out!