Are you thinking of buying fashion jewelry as a gift but don't know where to begin? The first thing to do is consider her personality. Here are some common personality types and what jewelry to consider for each of them.
Intellectual:
The intellectual woman is of course intelligent, slightly reserved and dresses in classic, simple outfits. This woman will appreciate jewelry that is understated, elegant, and of good quality. A simple chain in gold or silver would be perfect for a necklace. For earrings, small studs or understated hoops would be perfect to complement her classic sense of style. Or choose a thin bracelet like a thin silver bracelet with small subtle gemstones or beads.
Romantic:
The romantic woman is the ultimate girly-girl, and loves anything that is ultra feminine in nature. She wears skirts, dresses, is frequently found in floral prints, and finds the silver lining in any cloud. This woman likes to feel every inch of being a woman, and her jewelry should match. When shopping for her, think about strings of pearls, dangly earrings, and floral pendants. Wrapping it up in pretty paper with a bow would just take the cake. And yes, she likes different shades of pinks, purples, and reds.
Soccer Mom:
The soccer mom is all about practicality and has to keep herself and her busy family on track. Forget earrings that dangle - this mom needs studs that do not tangle in her hair or the strap of her bag. Similarly, choose simple necklaces and bracelets to match. Keep jewelry simple and practical for this woman, and she will know that you understand her lifestyle.
Socialite:
The socialite is the woman who is outgoing, friendly, and frequently the center of attention. She likes taking risks and will do so with her jewelry as well. When you go shopping for her, think about bright, bold colors, interesting textures, and chunky and geometrical designs. Her jewelry should be as unique as she is. Layers of chains, large pendants, wide bangles, and bubble sized beads are for her.
Naturalist:
The Naturalist is the woman who likes all things in her life to be as natural as possible, from wearing 100% organic cotton or silk to eating organic foods - her body is a temple! The colors she chooses are usually earth tones like shades of brown, green, blue, orange, and white. Her jewelry should be made of natural materials as well. While some metals are acceptable to her, her jewelry almost always includes stones, but not necessarily precious stones. A blue agate or jade pendant and matching earrings would be perfect, as well as other polished rocks and stones.
Eclectic:
Similar to the Socialite, this woman is almost always the center of attention, but bold in a different way. 
She likes to mix of vintage and trendy styles - she will take classic pearls and match them with art deco inspired rhinestone earrings. Shop a mix of vintage and trendy styles to give her the ability to mix and match on a whim.
To conclude, shopping for fashion jewelry isn't as hard as it seems. Though there are thousands of styles to choose from, you can easily narrow it down based on the above guidelines. Often, the person you are shopping for will fall into more than one of the above personalities - so use these ideas as a starting point when exploring the possibilities.