	AllExperts > Jewelry, Gems, & Minerals
	Search

About Thomas
Expertise
Have a question about jewelry repair or working with precious metal jewelry and gemstones? I am a working professional bench jeweler, involved everyday with setting stones in mountings, designing and making jewelry, repairing and limited custom manufacture. Over 30 years experience. If you work with jewelry as a hobby or as a profession, I might be able to help. I deal with the retail business, not mass production. Ask privately if you wish. See the box for that: It keeps your question between us. Please DO NOT ask MAKER'S MARKS, but metal quality marks are fine to ask. Please DO NOT ask diamond prices. See a gemologist for that.

Experience
I have near 35 years experience at the sort of jewelry work I do.

Education/Credentials
Education is English/Physics! Started in human resources, to advertising, to jewelry...wow, what a road. Now a jeweler for many years. I have had formal training in jewelry work and many shared experiences with top grade jewelers. We just never know were we will go or be. Follow your best, your dreams, with some discretion! Don't let the work tear up your body along the way.

You are here: Experts > Style > Jewelry Making > Jewelry, Gems, & Minerals > ring marks

Jewelry, Gems, & Minerals - ring marks

Expert: Thomas - 11/4/2009

Question
Please can you tell me if my ring is white gold or platinum by its markings, B&N 750 thankyou

Answer
Tina, thanks for this question.

Generally the markings in the UK are quite specific, if the item is hallmarked there. Yet, there is no mystery to a 750 marking. This is the numerical mark for 18kt(or ct depending on side of the Atlantic!). The number means parts per thousand but is easier to think of as a percent of pure gold in the metal mix used for the jewelry. 18k is 18 parts out of 24 parts pure gold, with pure gold considered 24k. 18/24 = 0.750 and that is the numerical mark but stamped without the decimal point on jewelry. As a percent, think of 18k as 75% pure gold and 25% other metals. Other metals are used to make pure gold hard enough for jewelry use and to determine the color, whether yellow, white or rose perhaps.

Tina I so hope this answer helps. : ) God Bless and Peace. Thomas.

Oh, the mark for 14k is normally 585, 10k is 417, 9ct is 375, Sterling silver is 925.
Platinum may be marked 950 or 900 in most cases, depending on the alloy. A simple abbreviation for platinum such as PT or PLAT indicates the 950 variety, at least in the USA.

Add to this Answer Ask a Question