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Agate (/ ˈ æ ɡ ɪ t / AG-it) is a variety of chalcedony, [1] which comes in a wide variety of colors. Agates are primarily formed within volcanic and metamorphic rocks.The ornamental use of agate was common in ancient Greece, in assorted jewelry and in the seal stones of Greek warriors, [2] while bead necklaces with pierced and polished agate date back to the 3rd millennium BCE in the Indus ...
Prefabricated settings for stones, to be attached to jewelry. There are two general types of gemstone cutting: cabochon and facet. Cabochons are smooth, often domed, with flat backs. [1] Agates and turquoise are usually cut this way, but precious stones such as rubies, emeralds and sapphires may also be.
Eilat stone; Epidosite; Glimmerite; Goldstone (glittering glass) Hawk's eye; Helenite (artificial glass made from volcanic ash) Iddingsite; Kimberlite; Lamproite; Lapis lazuli; Libyan desert glass; Llanite; Maw sit sit; Moldavite; Obsidian; Apache tears; Pallasite; Peridotite (also known as olivinite) Siilinjärvi carbonatite; Soapstone (also ...
Aquamarine mainly forms in granite pegmatites and hydrothermal veins, [10] and it is a very lengthy process that can take millions of years to form. [9] Aquamarine occurs in many countries over the world, and is most commonly used for jewelry, decoration and its properties. [11]
Shell jewelry is jewelry that is primarily made from seashells, the shells of marine mollusks. Shell jewelry is a type of shellcraft . One very common form of shell jewelry is necklaces that are composed of large numbers of beads , where each individual bead is the whole (but often drilled) shell of a small sea snail .
The necklace's impact comes entirely from the uninterrupted line of gemstones, identical in colour and cut. The stones are either all the same size, or vary gradually from small to larger towards the bottom of the necklace. Diamonds as well as coloured stones can be used in rivières, and pendant stones or a pendant cross may be attached. These ...