Art Deco 16.10ct Colombian Emerald and Transitional Cut Diamond Halo Ring, c.1930s
18 Carat Yellow Gold & Platinum
1870s – 1940s. This is the transition between the old European and the modern brilliant cuts. The angles of these stones are more similar to the modern brilliant to other antique cuts. For example, the table facet size is increased, and culets are nearly nonexistent or ‘somewhat large’ but could not be described as ‘large’ or ‘open’.
This term refers to the decorative art style of the 1920s and 1930s. Bold geometric shapes and opulence characterized the style of the era.
A method of setting whereby stones are set and secured between a number of ‘claws’, usually four, six or eight. The method of setting was popularised by Tiffany & Co. in the late 1880s, and allows more light to pass through a gemstone than other settings. Sometimes referred to as prong set.
The part of a ring that sits on top of the finger and supports the bezel. The gallery is sometimes engraved, pierced or open sided with patterns.
Derived from the Greek meaning ‘unbreakable’, diamond is a mineral, considered to be the most beautiful and rare of all gemstones. Diamond has been associated with love for centuries.
Named so from the Greek ‘green stone’, emerald is coloured by the trace elements chromium or, less often, vanadium. Emeralds have been mined in Egypt since the 4th century BC. Emerald is a stone that is said to open the heart chakra and symbolize ‘successful love’. It is green variety of the Beryl family, a species that also includes aquamarine, morganite and red beryl. The most desirable emeralds are mined in Muzo, Colombia, though emeralds are also being mined in other areas of South America, Central and Eastern Africa, Madagascar, Pakistan, Afghanistan and Central Asia. Read more
The diamond colour grading scale ranges from D to Z. See The Four C’s for more information.
A gemstone and an organic substance. Pearls have been coveted through the ages for their beauty as symbols of wealth and status. Pearl formation process begins when a foreign body enters a mollusk (usually an oyster or mussel) and is coated with nacre as a natural defense. The natural pearl market declined after 1900, and today 99% of pearls are cultured and are grown around the world in saltwater oysters and freshwater mussels. Read more
A weight measurement of a gemstone or gold. The term is derived from the ancient used of carob seeds to balance scales when selling amounts of gold or gemstones. The term is often shortened to ‘ct’.
A chemical element with the symbol Au. Gold is a yellow, malleable metal which makes it perfect for use in jewellery making.
One of the most defining characteristics of a diamond is its cut. While high grades of color, clarity, and carat weight affect a diamond, it's the cut that determines the symmetry of the stone's facets, its overall proportions, and its ability to reflect light. An expertly cut diamond will achieve high levels of brilliance, sparkle, and durability. For more information and cut types, see The Four C's.
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