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Radiant cut

The vibrant radiant-cut diamond is a cross between the cushion and princess cuts. The square, cro...

Radiomir watch by Panerai

This Italian brand was a military secret for years as purveyor to the Italian Navy of precision i...

Repeater

A complication in a watch that audibly sounds the hours, and sometimes minutes, at the touch of a...

Retrograde

Literally meaning to move backwards, a retrograde display shows time on a finite line. When the l...

Reverso watch by Jaeger-LeCoultre

A request by British polo players in India to find a way to shield the glass on their watches fro...

Rhodium-plated

This precious metal, more valuable than gold, makes a dazzling plating for jewellery. Whiter than...

Rio Tinto

Australia-British brand Rio Tinto is a leading international diamond producer known for finding, ...

Rizzoli

With a famous independent book store on 5th Avenue in New York, Rizzoli is also a publishing hous...

Roman numerals

The numeric system used in Ancient Rome, which employs letter combinations from the Latin alphabe...

Rose gold (red gold)

Rose gold and its various shades get their colour from a gold and copper alloy. Depending on the ...

Rotor

An oscillating metal weight attached to a mechanical automatic movement, which swings with the we...

Rowan & Rowan

Rowan & Rowan fine antique jewellers have been searching out the finest vintage jewels and se...

Royal Asscher cut

With 74 facets, the octagonal-shaped Royal Asscher is similar to an emerald cut but the facets ar...

Royal Oak watch by Audemars Piguet

Designed by Gérald Genta, the Royal Oak watch was the first luxury sports watch housed in an impo...

Rubies

Naturally occurring rubies are one of the world’s most valuable gemstones. They come from the min...

Rub-over

The rub-over setting is a bezel-type setting that consists of a thin strip of metal that is solde...

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