Glossary
Antiques & Collectables
Glossary of antique and collectable terms There are 856 entries in this glossary.
K
| Term | Definition |
|---|---|
| Karat |
Karat, abbreviated Kt, is a measure of the fineness of gold.
Karat - Percent Gold : |
| Keeper Ring |
A keeper ring is a ring which is used alongside another, more valuable ring to keep it securely on the finger
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| King Cut |
The king cut is a modification of the brilliant cut which is used for large diamonds. On His Majesty’s 50th Anniversary of his accession to the throne in June 1996, a new diamond cut was created as an internationally patented variation of the round brilliant cut. The Petch Maharaj has a total of 68 facets, one for each year of his reign in accordance to his 1996 anniversary. Not including the culet, there are 33 facets on the top and 35 on the bottom. The stone is rich with symbolism; the diamond itself represents the durability of HM King Bhumibol’s reign. In addition, further Buddhist references may be derived from observing the design of the diamond. The alignment of the facets along eight axes has eight spokes, as inspired by the Buddhist dhamma wheel (dhammachakra) and representing the Eightfold Noble Paths of Buddhist belief
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| Knop |
Decorative knob on lids, or the bulbous moulding, usually placed at the mid point of the stem of a cup or candlestick. |
| Knot |
A knot is a flaw or a mineral inclusion in a gemstone, usually a diamond, that is at the surface of a gem after polishing. The knot is a small raised bump on the finished gemstone |
| Koh-I-Nur Diamond |
The Koh-i-Nur, meaning "Mountain of Light", is one of the largest-known diamonds. It was found in India and belonged to the first Indian Rajahs of Malwa in the 1300s. The gem made its way to Persia in the 1500s, taken as a spoil of war by the Mogul Sultan Babur. At some point it was returned to India but was taken by the East India Company and presented to Queen Victoria in 1850. The gem was later cut and set into a brooch and later into the State Crown of the United Kingdom. The Koh-i-Nur is part of the crown jewels of Britain and is kept in the Tower of London, London, UK
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| Kunzite |
Kunzite is a transparent pink, light pink, or light purple gemstone that resembles rose quartz. It is a variety of the mineral spodumene. Kunzite can fade after prolonged exposure to light. Kunzite is also called "evening stone," because of its propensity to fade in bright light. The original colour of some kunzite stones can be restored or even intensified by irradiation. It is usually used as a large stone and is easily chipped; small stones of kunzite are difficult to cut. Kunzite is often used in pendants. Kunzite was first found in 1902 in Pala, California, USA, and is named for the gemologist George F. Kunz. Kunzite's chemical composition is LiAlSi2O6 Kunzite has a hardness of 6-7 and a specific gravity of 3.1 - 3.2
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| Kyanite |
Kyanite is a deep sapphire blue, green, grey, or white gemstone. The colour is not always uniform; it can be blotchy or in streaks. The cystals are transparent to translucent. Kyanite is found in Brazil, Burma, Kenya, Europe, India, Australia, Kenya, and the USA. Kyanite's chemical composition is Al2SiO5; it is composed of andalusite and sillimanite. Kyanite has a hardness of 4.5 to 6.5; the hardness varies depending on which way it is scratched (this happens because kyanite consists of long, thin crystals). It has a specific gravity of 3.58
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