It is easily tightened by a jeweler. Stones have usual Matl imperfections.
I believe this is a rare example of her work. The cross measures approximately 4 1/2" not including the bale by 3". This item is in the category "Jewelry & Watches\Vintage & Antique Jewelry\Necklaces & Pendants". The seller is "miriam4094" and is located in this country: US.