Here's why:
* No Standard Marking: Jewelry typically uses standard markings for metals and gemstones. Common markings include:
* Metals: 10K, 14K, 18K, Sterling Silver, Platinum
* Gemstones: Diamond (D, E, F...), Ruby, Sapphire, Emerald
* Misspelling: It's possible "PGDA" is a misspelling of a real marking. However, without more information, it's hard to know for sure.
To determine if the necklace is real:
1. Examine the Necklace: Look for any other markings, such as a manufacturer's stamp.
2. Consult a Jeweler: Take the necklace to a reputable jeweler for an expert opinion. They can identify the materials and determine its authenticity.
Remember: Be cautious of jewelry with unfamiliar markings. It's best to be safe and have it checked by a professional.