Antique Chinese carved genuine turquoise sterling silver oval brooch pin 6.3g

Great condition, frame shows some light buildup. No markings, has been acid tested and is guaranteed to be sterling silver (see photo of strong acid reaction). Center carving was done entirely by hand using a single piece of genuine turquoise that has oxidized slightly resulting in the most beautiful green tint and features what appears to be a bird or insect along with bloomed flowers. Clasp functions perfectly. Weight is 6.30 grams. Please see photos for measurements in inches.