Even though this is stamped Austria the set has all of the construction elements used in Schreiner jewelry.
Information found on the web states Schreiner did make jewelry for other companies.
"Schreiner created a huge range of jewelry pieces including brooches, bracelets and necklaces and their pieces displayed a particular range of construction techniques which can be used by collectors to identify their items." Be sure to read construction elements below
Source: Gadelles Vintage Costume jewellery
Unsigned, necklace and Earrings set, made in Austria w/ Schreiner stones, components. Seriously Rare Jewelry Set Stamped Austria.
FABULOUS INVERTED STONES AND GLASS CABOCHONS NECKLACE AND EARRINGS SET
Signed Austria Created By Schreiner
Schreiner design elements include:
Open back, inverted, faceted clear stones accented with glass cabochon Stones in leaf pattern prong settings
"Larger stones were often set using elaborately designed prongs. Dogtooth is the most common design. These are identified by their triangular shape and open centers. Other designs included a leaf shape and a Fleur-de-Lis pattern".
"Schreiner necklaces had a five-loop extension chain decorated with four stones. Same extension chain on this necklace"
"The typical Schreiner clip back earring has a distinctive clip-arm featuring an open center. These were thought to give the wearer extra comfort. Some other makers also used the donut clip-arms, they’re also frequently found on Austrian designs."
Schreiner jewelry stamps
"Although many Schreiner pieces destined for ready-to-wear designers remained unsigned. some pieces which were sold in department stores do display the Schreiner name".
High quality construction and design
Excellent vintage condition. Stones are undamaged and brilliant with wonderful clarity. Finish is intact