Electroforming Hasli
“Hasli” is a traditional style of rigid collar‑like necklace that sits close to the neck — common in Indian ethnic jewellery. The electroforming term refers to a specific jewelry manufacturing process in which metal is deposited layer by layer using an electrochemical bath to form the piece. Unlike normal casting, electroformed jewelry is often hollow yet structurally strong, allowing for bold, sculptural shapes that remain lightweight. 

40 gm
This indicates the approximate weight of the piece ($\sim$40 grams) — a useful reference for buyers about the size and heft of the necklace.

33
This is most likely a design or model number assigned by the maker or seller so they can distinguish this particular style from others in a series.