14k gold is better for stud earrings intended for daily wear due to its enhanced durability and resistance to scratching. It offers a good balance of gold content and strength, making it more suitable for everyday use compared to the softer 18k gold.

Yes, it's OK to wear gold stud earrings all the time. Gold, especially in 14k form, is durable and resistant to tarnish, making it suitable for continuous wear. Just ensure to clean them regularly to maintain their shine.