About John Hoyne

John Hoyne is the founder and co-owner of Carus Jewellery. He runs the business full-time with his wife Elaine. John has studied gemology and is an antique jewellery specialist. As an author, John has authored numerous jewellery informational articles for Carus Jewellery`s blog. Demonstrating his extensive knowledge in jewellery history, period styles, and gemology. John personally sources each piece of antique and vintage jewellery for sale on Carus Jewellery. He meticulously verifies each unique piece before issuing a certificate of authenticity.

Citrine

Citrine The name Citrine originates from the Latin word "Citrina" meaning yellow and the French word "Citron" meaning lemon colour. Citrine is comprised of silicon dioxide, with iron being the colouring agent. Most natural citrine is typically a light or pale yellow colour. Madeira Citrine has a deep saturated reddish-orange colour and is considered [...]

Chrysoberyl

Chrysoberyl The name Chrysoberyl is derived from the Greek words "Chrysos" which means gold and "Beryllos" which means gemstone. Chrysoberyl is a golden to green colour and is normally cut using a Ceylon cut or brilliant cut. The Chrysoberyl mineral group also contains the varieties Alexandrite and Chrysoberyl Cat`s Eye. Both of which are [...]

Bloodstone

Bloodstone Bloodstone is a dark green, opaque chalcedony with red spots. Chalcedony belongs to the quartz mineral group. Other well-known gemstones in the quartz family include, Agate, Amethyst, Rock Crystal, Smoky Quartz, Rose Quartz, Citrine and Carnelian. Bloodstone is also known as Heliotrope, the name Heliotrope is derived from the Greek words "Sun Turner". [...]

Aquamarine

Aquamarine Aquamarine derives its name from the Latin words "Aqua" meaning water and "Marinus" meaning of the sea. This beautiful gemstone resembles seawater, with colours ranging from light to dark blue and often including shades of blue-green. With dark blue been the most desirable colour. The agent responsible for colouration is iron. Aquamarine is [...]

Agate

Agate The name Agate is derived from the River Achates in Sicily, which is now called the Dirillo River. Agate is a variety of chalcedony, which belongs to the Quartz mineral group. Other well-known gemstones in the Quartz family include, Amethyst, Rock Crystal, Smoky Quartz, Rose Quartz, Citrine, Carnelian and Bloodstone. Agate is a [...]

Turquoise

Turquoise Turquoise gemstone gets its name from the French word "pierre turquoise" which means Turkish stone. This name came about from the trade route that was taken by the Venetian merchants who brought the gemstone to France. This is despite the fact that the stone originated in Persia (modern-day Iran ). The gemstone is [...]

Garnet

Garnet  Garnet derives its name from the Latin word "granatus" which means seed or grain. This is because of the rounded crystals of the gemstone and their similarity to the red kernels of the pomegranate fruit. It also takes its name from the 14th-century English word "gernet" which means dark red.  Garnet is the [...]

Pearl

Pearl The name Pearl is believed to be from the Latin word "Perna" which means a type of shell. It is produced in bivalve mollusks, mostly of the oyster family ( Ostreidae ). It starts as an irritant in the mollusk. To cope with this irritant the mollusk will continuously coat the foreign object [...]

Sapphire

Sapphire Sapphire gets its name from the Greek word "Sapphirus" which means blue and is a member of the corundum family along with Ruby. It comes in a variety of colours including blue, pink, orange, yellow, green, purple, black, and colourless. Historically only the blue variety was called Sapphire. With the green variety being [...]

Ruby

Ruby Ruby is a member of the corundum family of gemstones. There are two gemstones in the corundum family, Ruby and Sapphire. Low-quality corundum gemstones are typically used as cutting and polishing agents. The best known of these would be emery paper, which is mostly fine-grain corundum with the addition of magnetite, hematite, and [...]

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