Vintage Stone Set Brooches Lot

Three vintage stone set brooches, a Scottish silver hardstone…
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Three vintage stone set brooches, a Scottish silver hardstone brooch set with blood stone, agate and jasper with central paste, some losses, size 38 mm, registration mark, a gilt plaid brooch with central brown paste size with thistle design, diam. 60 mm, with safety chain and a gilt reliquary style brooch with engraved rear panel, front set with a long oval paste to scrolling border, 65 x 58 mm.

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  • Agate - Agate is a type of semi-precious gemstone that is made up of silica dioxide, a mineral that is also found in quartz. It is known for its distinctive banded patterns, which are created as layers of silica are deposited in different colours including red, orange, yellow, green, blue, and purple. It is often used in jewellery, decorative objects, and other decorative items, and it is prized for its beauty and durability. Agate is found in many parts of the world, including Brazil, India, and the United States.
  • Hardstone - Hardstone is not a scientific name for a particular gemstone, but a word used to describe any one or more semi-precious stones used in jewellery and decorative arts, and can include jade, agate, onyx, rock crystal, amber, jet and carnelian. Softer stones and minerals such as soapstone, and alabaster and hard stones used in building such as marble or granite are generally excluded.
  • Paste / Rhinestone / Diamante - Paste (or rhinestone or diamante) is the name given to a coloured glass composition used for imitation gemstones, or to imitation gemstones made of glass.

    Although the technique of glassmaking had been known for thousands of years, but it wasn't until a lead glass with similar optical properties to diamonds were invented by a German jeweller working in Paris (either "Stras" or 'Strasser") in the early 18th century that "paste" gemstones became popular.

    There was no social stigma attached to wearing imitation stones, and they were worn in situations where highway robbery was a possibility. The 18th century settings were of very high quality, equivilent to real gemstone jewellery.

    In the nineteeth century the quality of paste jewellery declined and it has remained the poor cousin to genuine gemstones ever since.

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