Well, friend, "UD" on jewelry usually stands for "Underwriters Laboratories Diamond." It's a certification mark that ensures the quality and authenticity of the diamond in your jewelry piece. It's like a little seal of approval that lets you know you have a genuine and beautiful gem to cherish.
The stamp "18K UD" on a ring indicates that the piece is made of 18 karat gold, which means it contains 75% pure gold and 25% other metals. The "UD" may refer to the manufacturer's or designer's initials, indicating the specific brand or maker of the jewelry. This stamp helps authenticate the quality and origin of the ring.
Ud=Ut dictum is a latin word, meaning "as directed"
Are you lost? (formal) Ud is an abbreviation for "usted" which is the formal singular word for "you"
"As Directed"
Ulcerative Dermatosis
Translation: Use "tu" when you speak to me, not "Ud.". (Literally: Speak to me of "tu" not of "Ud.".)
Fàcil (Easy), How are you?
It means: "Do you have my pencil?"
I send the cards to you.
The 10k identifies the metal as 10 karat white or yellow gold. Ud is probably the jewelers mark such as Ultra Diamond.
Hi? What's up?
It means "Where are you going to this afternoon?"