Threading for Gold Jewelry:
External threading for Gold is a better choice
Customers don't want to lose those gold balls and will blame defective manufacturing.
mind when it comes to allergic reaction to nickel, 14Kt contains nickel.
The skin is not protected by a chromium oxide layer as Stainless Steel
is so it is a wonderment when a customer
reports that they experience an allergic reaction to nickel in 316L and
therefore only use 14Kt.
We recognize and appreciate the high lustrous finish produced by USA manufacturers but not because it is internal, but because it is polished to a wonderful degree of perfection. USA producers can make the finest body jewelry in the world.Gold body jewelry is now being made by regular jewelry trade manufacturers who see a market for themselves to expand.
As a final word: -- and a concern expressed by some:
Internally threaded jewelry accumulates dirt and bacteria in that tiny hole in the internally threaded bar and cannot be cleaned adequately, even with an ultrasonic (except for larger gauges). Externally threaded bars avoid this problem. The hole in the threaded ball is larger and can be cleaned.
Internal is standard for large gauges (because the threaded diameter would be too large for external) and chosen specialty items such as prong settings or designs that have no ball.
Tongue and Body Gold Cleaning:
Special considerations in the mouth.
Foods containing salt, and smoking, will likely discolor the bar.
There is nothing wrong with the gold.
To remedy take it to a jeweler to have it buffed back to original finish.
"420" smokers will leave a black tar on the bar.
Body fluids can discolor gold but they too can be buffed back.
Buyer Beware: Gold content can be compromised.
Anyone may make a business card claiming factories in other countries,
rent mailboxes, shared office space and phone numbers.
Some examples of scams:
The Scam: 9Kt 10Kt and 11 Kt substituted for 14Kt Gold
The Scam: Hollow Balls and Bars.
The Scam: Gold Plating over brass or other metals.
---We actually caught an importer doing this for navels.
Test: (Hard to scrape or cut even with a razor.)
The Scam: Curves represented as a certain gauge measure less.
Test: (Check with a Micrometer, not your gauge wheel.)
The Scam: The balls are hollow.
Test: (Look inside the ball.)
The Scam: The ball is "loaded"
Test: (Spin the ball on a table and see if it wobbles like loaded dice. Look at the threading inside the ball for a different color.)
The Scam: Bars are shaved, not round.
Test: (Roll a BB on a flat surface.) Look to see they are smooth. Only buy your Gold from someone who has a reputation in the industry.