Jewelry pieces that typify a given period are more valuable. Here is the quintessential Deco Brooch. It is in Jade Diamonds and Onyx. The detail is gorgeous and all stones are bead set.
The Brooch is 2 1/4" long and 3/8" at the widest part of the Jade. The Brooch weighs 6.0 grams. It has a "T" bar closure with a safety latch that confirms the period. It was purchased at a fancy Hotel Antique show in London along with a few other items I have listed and the next one ( a Diamond and Sapphire Pendant) I will post.
The Jade is an excellent color and the Diamonds match well. The Two largest rows of Diamonds are all Brilliant Cut and the smallest are all Old Mine Cut. The piece has been acid tested Platinum as it does not bear a mark.