BONY LEVY Gatsby Baguette Diamond Band

A baguette (; French: [baɡɛt] ) is a long, thin type of bread of French origin that is commonly made from basic lean dough (the dough, not the shape, is defined by French law). It is distinguishable by its length and crisp crust.

A baguette has a diameter of about 5 to 6 cm (2–2+1⁄2 in) and a usual length of about 65 cm (26 in), but can be up to 1 m (39 in) long.

In November 2018, documentation surrounding the "craftsmanship and culture" of making this bread was added to the French Ministry of Culture's National Inventory of Intangible Cultural Heritage. In 2022, the artisanal know-how and culture of baguette bread was inscribed to the UNESCO Intangible Cultural Heritage Lists.

Diamond is a solid form of the element carbon with its atoms arranged in a crystal structure called diamond cubic. Diamond as a form of carbon is tasteless, odourless, strong, brittle solid, colourless in pure form, a poor conductor of electricity, and insoluble in water. Another solid form of carbon known as graphite is the chemically stable form of carbon at room temperature and pressure, but diamond is metastable and converts to it at a negligible rate under those conditions. Diamond has the highest hardness and thermal conductivity of any natural material, properties that are used in major industrial applications such as cutting and polishing tools. They are also the reason that diamond anvil cells can subject materials to pressures found deep in the Earth.

Because the arrangement of atoms in diamond is extremely rigid, few types of impurity can contaminate it (two exceptions are boron and nitrogen). Small numbers of defects or impurities (about one per million of lattice atoms) can color a diamond blue (boron), yellow (nitrogen), brown (defects), green (radiation exposure), purple, pink, orange, or red. Diamond also has a very high refractive index and a relatively high optical dispersion.

Most natural diamonds have ages between 1 billion and 3.5 billion years. Most were formed at depths between 150 and 250 kilometres (93 and 155 mi) in the Earth's mantle, although a few have come from as deep as 800 kilometres (500 mi). Under high pressure and temperature, carbon-containing fluids dissolved various minerals and replaced them with diamonds. Much more recently (hundreds to tens of million years ago), they were carried to the surface in volcanic eruptions and deposited in igneous rocks known as kimberlites and lamproites.

Synthetic diamonds can be grown from high-purity carbon under high pressures and temperatures or from hydrocarbon gases by chemical vapor deposition (CVD). Natural and synthetic diamonds are most commonly distinguished using optical techniques or thermal conductivity measurements.

Gatsby may refer to:

• The Great Gatsby, a 1925 novel by F. Scott Fitzgerald
  • The Great Gatsby (disambiguation), an index of film adaptations of the novel
  • Jay Gatsby, the novel's central character