* 18KT: This refers to 18 karat gold. "Karat" (or "carat" in some contexts) is a measure of the purity of gold. 18 karat gold is 75% pure gold, meaning 75% of the metal's weight is gold, with the remaining 25% being other metals like silver, copper, or nickel.
* GTE: This could refer to a variety of things depending on the context. It could be an abbreviation for a company name, a product code, a model designation, or even a personal identifier.
To determine the exact meaning of 18KTGE, you'll need more context. For example:
* Where did you see this? (A piece of jewelry, a website, a technical document, etc.)
* What is the item associated with? (A watch, a car part, a product, etc.)
Once you provide more information, I can help you decipher the meaning of 18KTGE more accurately.