The Ajediam Glossary

A jabot pin is a decorative pin or brooch with a long, often ornate, pin stem that was popular during the late 19th and early 20th centuries. It was typically worn at the neck of a blouse or to secure a lace jabot on the front of a dress.

Jacinth is an archaic term used to describe a reddish-brown to an orange-brown variety of zircon gemstone. In modern gemology, the term "hyacinth" is more commonly used to refer to this gem. Jacinth was historically a popular gemstone in jewelry.

A technique in jewelry setting where stones are set at different levels, resembling a ladder. This method adds depth and visual interest to the piece.

Jacobite jewelry refers to jewelry items, often in the form of brooches, that were created during the 18th century in support of the exiled King James II of England and his descendants. These pieces usually feature symbols associated with the Jacobite cause.

Jade is a gemstone that is highly esteemed in various cultures for its beauty and symbolism. It is known for its toughness and comes in two different mineral species: jadeite and nephrite. Jade is commonly used in carvings, beads, and ornamental jewelry.

Jade Albite, also known as "translucent white jade," is a type of jade that has a white to light grayish color with a translucent appearance. It is a less common variety of jade but still valued for its unique beauty and used in jewelry and carvings.

A jade amulet is a protective charm or ornament made from jade that is believed to bring good luck and ward off negative energies. Jade amulets have been worn by various cultures throughout history and are still used in contemporary jewelry designs.

Jade matrix refers to the natural rock material in which jadeite or nephrite is found. It often consists of other minerals and materials that create unique patterns and colors within the jade. Jade matrix is sometimes used in jewelry alongside pure jade gemstones.

Jadeite is a highly prized and valuable type of jade that belongs to the pyroxene mineral family. It is known for its vibrant green colors, translucency, and fine texture. Jadeite is extensively used in high-quality jewelry pieces, especially in East Asian cultures.

A jadeite triplet is a composite gemstone made by cementing three layers of jadeite together. It typically consists of a translucent jadeite top, a dark backing material, and a colorless adhesive in between. Jadeite triplets are often used in affordable jewelry.

A Jager, also known as a "hunter's ring," is a type of finger ring with a rotating or revolving central element. This central part can be turned to reveal different designs or symbols, making it a playful and interactive piece of jewelry.

A Jaguar ornament is a jewelry piece featuring the motif of a jaguar, a powerful and sacred animal in several pre-Columbian cultures of Central and South America. Jaguar ornaments were often crafted from gold and used as pendants or ceremonial adornments.

The Jahangir Diamond is a historic diamond with a pale yellow color and a rose-cut shape. It was once owned by the Mughal Emperor Jahangir of India. The diamond's origin and current whereabouts are unknown, adding to its mystery and allure in the world of gem history.

A Jahangir pendant is a jewelry piece, usually a necklace pendant, inspired by the design and motifs prevalent during the Mughal Emperor Jahangir's reign in India. These pendants often incorporate intricate filigree work and gemstones reminiscent of the era.

Jaipur jewelry refers to the traditional jewelry craft of Jaipur, India. Renowned for its intricate designs and vibrant use of gemstones, Jaipur jewelry showcases the artistry and skills of local artisans, making it a popular choice for discerning jewelry enthusiasts.

A technique in antique jewelry where gemstones are secured using pegs. This method, popular in historical pieces, showcases gemstones in a secure yet decorative manner.

James I jewelry refers to the jewelry crafted and worn during the reign of King James I of England in the early 17th century. Jewelry from this era is characterized by intricate metalwork, gem settings, and elaborate pieces reflecting the opulence of the time.

Wenzel Jamnitzer was a prominent German goldsmith and artist known for his exquisite metalwork and intricate engravings during the Northern Renaissance. His contributions to the field of jewelry design and metal craftsmanship are highly regarded to this day.

Japanese jewelry reflects the artistry and cultural influences of Japan. Traditional Japanese jewelry often features natural themes like cherry blossoms and motifs from folklore and mythology. Contemporary Japanese jewelry artists combine traditional techniques with modern aesthetics.

Jardin is a French term used in gemology to describe a gemstone's internal flaws or inclusions. These inclusions are often tiny mineral crystals or fractures that can affect the gem's transparency and overall clarity. The term "jardin" translates to "garden" in English.

Inclusions within a gemstone, often referring to visible flaws or imperfections. These "gardens" can vary in size and type, influencing the gem's overall clarity and appearance.

Jargoon is an old term used to refer to colorless to pale yellow or pale greenish-yellow varieties of zircon gemstones. It was often used in historical writings but has since fallen out of common use in modern gemology, with the term "zircon" being more prevalent.

The term "jarretière" is French for "garter." In the context of jewelry, a jarretière refers to a garter-like ornament or bracelet often adorned with gemstones and worn as a decorative accessory. Historically, jarretières were used as a symbol of nobility or an emblem of an order of chivalry.

A "jaseron chain" is a type of jewelry chain known for its distinctive link design. It consists of interlocking oval links with a twisted or diamond-cut pattern. Jaseron chains are commonly used for necklaces, bracelets, and anklets, adding a classic and elegant touch to various jewelry pieces.

Jasper is an opaque variety of chalcedony, composed of microcrystalline quartz. It comes in a wide range of colors and often displays unique patterns and banding. Jasper has been used as a gemstone and for ornamental purposes for centuries, and it is popularly carved into cameos, beads, and cabochons for jewelry and artifacts.

Jasper agate, also known as "jasp-agate," is a type of chalcedony that combines the characteristics of jasper and agate. It typically exhibits colorful banding, similar to agate, but with the opaque and earthy appearance of jasper. Jasper agate is frequently used in jewelry-making and lapidary work for its attractive patterns.

The Jellinge style is an archaeological term used to describe a Viking Age art style that emerged during the 10th century in Denmark. It is characterized by intricate animal motifs, intertwined serpents, and gripping beasts, commonly found on jewelry pieces, rune stones, and other artifacts from the Viking era.

A historical term for a gemstone or jewel. In historical contexts, "jemmy" referred to precious stones that were highly valued and often featured prominently in royal and ceremonial jewelry.

Jensen refers to Georg Jensen, a renowned Danish silversmith and founder of the Georg Jensen brand. The brand is famous for its high-quality silverware and jewelry designs that often incorporate nature-inspired elements and flowing lines. Georg Jensen's creations are highly sought after and cherished by collectors and admirers of fine craftsmanship.

Jet is a type of fossilized wood that takes a high polish and is used as a gemstone in jewelry. It is black or dark brown in color and has been used for millennia to create beads, amulets, and mourning jewelry. Jet jewelry gained popularity during the Victorian era, especially for mourning jewelry following the death of Prince Albert.

A jet ring is a finger ring made from jet gemstone. Jet rings were particularly fashionable during the Victorian era as mourning jewelry, symbolizing loss and remembrance. These rings often featured intricate carvings and delicate details, making them significant sentimental pieces for those in mourning.

A jewel refers to a precious or semiprecious gemstone that has been cut and polished to be used in jewelry. Jewels are prized for their beauty, rarity, and durability, and they are often set into rings, necklaces, earrings, and other adornments. The value of a jewel is influenced by factors like size, clarity, color, and the gemstone's origin.

Inclusions within amber that are remnants of ancient beetles. These unique inclusions provide a fascinating glimpse into prehistoric ecosystems and add character to the gemstone.

The skill and artistry involved in creating high-quality jewelry. Jewel craftsmanship encompasses precision in design, attention to detail in execution, and mastery of techniques for a flawless final product.

A small, fine-toothed saw used by jewelers for cutting metal and other materials. This specialized saw allows precise cuts, enabling intricate designs and detailed metalwork.

A small magnification device used by jewelers to inspect gemstones and jewelry. It provides a close-up view, aiding in the identification of inclusions and details that may affect value.

A polishing compound used by jewelers to bring out a high luster on metals. Jewelers rouge, typically a fine abrasive, is applied during the final stages of polishing to achieve a mirror-like finish.

The Jewelled State Sword, also known as the Sword of State, is a ceremonial sword adorned with jewels and precious metals. It is often part of the regalia used in royal or state ceremonies, symbolizing power and authority. The design and craftsmanship of the Jewelled State Sword are typically highly ornate and carry significant historical importance.

Jewelry encompasses a wide range of decorative items worn for personal adornment. It includes items such as rings, necklaces, bracelets, earrings, brooches, and pendants, crafted from various materials like gemstones, metals, and other natural and synthetic elements. Jewelry has been an integral part of human culture for thousands of years.

The process of assessing the value of jewelry for various purposes, such as insurance or resale. A thorough appraisal considers factors like gem quality, metal type, and craftsmanship.

A container for storing and organizing jewelry items. It often includes compartments and padding to protect delicate pieces from scratches and damage.

Computer-Aided Design software specifically for jewelry design. CAD allows jewelers to create detailed and intricate designs, facilitating precision in crafting unique and custom pieces.

The process of creating jewelry by pouring molten metal into a mold. Jewelry casting allows for the production of intricate and detailed pieces, often used in both traditional and contemporary designs.

A decorative technique involving the fusion of colored glass onto metal surfaces. Enameling adds vibrant colors and intricate patterns to jewelry, creating visually striking and durable designs.

Coverage specifically designed to protect against the loss, theft, or damage of jewelry items. Jewelry insurance policies often consider the appraised value of pieces and may cover repairs or replacements.

A Jewish marriage ring, also known as a Jewish wedding band, is a traditional ring used in Jewish wedding ceremonies. It is a plain gold band without gemstones or engravings, symbolizing the unbroken circle of love and commitment between the spouses. The ring is exchanged under the chuppah during the wedding ceremony as a token of their marriage covenant.

A device used in jewelry making to hold and shape metal during soldering or forming. Jigs provide stability and precision, ensuring accurate and consistent results in the crafting process.

A setting technique where gemstones are arranged in a lively, dynamic pattern. Jitterbug settings create a sense of movement and energy in jewelry designs, capturing attention and highlighting gemstones.

Joaillerie is the French word for "jewelry." It is used to refer to the art, craftsmanship, and trade of jewelry making. Joaillerie involves the creation of exquisite and unique jewelry pieces, often using precious metals and gemstones, with a focus on exceptional design and meticulous attention to detail.

The John the Baptist Enseigne is an ornamental pendant or badge that depicts the biblical figure of John the Baptist. It is often made of precious metals and gemstones and is used as a symbol of religious devotion or as a decorative piece worn during special occasions. The design of the enseigne typically follows artistic representations from historical periods.

Joining in jewelry making refers to the process of connecting or attaching different components or materials to form a complete piece of jewelry. Various techniques, such as soldering, welding, riveting, and wire wrapping, are used for joining different metals, gemstones, and other elements in jewelry fabrication.

The Jonker diamond is a famous diamond with a notable history. It was discovered in South Africa in 1934 and weighed over 726 carats in its rough form. The Jonker diamond was eventually cut into 13 smaller diamonds, each with its unique name and carat weight. Some of these diamonds became prominent gems in jewelry and private collections.

The Joseph-in-the-Well pendant is a vintage or antique pendant that depicts the biblical story of Joseph being thrown into a well by his brothers. The pendant typically features intricate metalwork or enamel detailing, and it may also incorporate gemstones or pearls for added decoration. The pendant serves as a wearable piece of art with historical significance.

The Josephine Tiara is a historic tiara that belonged to Empress Josephine, the first wife of Napoleon Bonaparte. The tiara features a neoclassical design with laurel wreaths and cameos, and it is crafted from gold and set with diamonds and emeralds. The Josephine Tiara represents a significant historical artifact and is treasured for its elegance and provenance.

Jour, à is a French term used in jewelry to describe a specific type of delicate, openwork design. It involves intricate piercing or engraving on metal, creating a lacy or filigree-like appearance. This technique is often used in jewelry pieces like rings, pendants, or earrings, adding a touch of elegance and refinement to the overall design.

The Jourado diamond is a famous Brazilian diamond known for its unique color. It exhibits a rare golden hue, making it highly prized among collectors and jewelry enthusiasts. The Jourado diamond's distinct color is a result of trace elements or structural irregularities within the crystal lattice, setting it apart from colorless or other colored diamonds.

A necklace featuring a series of gemstones, often symbolizing life's journey. Each stone represents a unique milestone or experience, creating a personalized and meaningful piece.

A skilled jewelry maker who has completed formal training and apprenticeship. Journeyman jewelers have demonstrated proficiency in various techniques and are recognized for their expertise in crafting quality jewelry.

The Jubilee diamond, also known as the Reitz diamond, is one of the largest diamonds in the world, weighing about 245.35 carats. It was discovered in South Africa in 1895 and was named in honor of Sir Francis William Reitz, the then-president of the Orange Free State. The diamond is a fancy, intense pink-brown color and exhibits exceptional clarity. It is currently part of the British Crown Jewels.

The Jubilee cut is a diamond cut created by Marcel Tolkowsky in the early 20th century. It is a patented cut with 58 facets, designed to optimize the brilliance and fire of the diamond. The cut features a combination of step-cut and brilliant-cut facets, offering a unique and dazzling appearance. The Jubilee cut is a popular choice for engagement rings and other fine jewelry.

The Judgement of Paris Pendant is a famous piece of jewelry designed by the renowned jewelry designer, Elizabeth Locke. The pendant is inspired by the Greek mythological tale of the Judgment of Paris. It features an intricately carved cameo depicting Paris, the prince of Troy, awarding the golden apple to Aphrodite. The pendant is crafted in 19-karat gold with vibrant gemstones and pearls, showcasing exquisite artistry and craftsmanship.

A German term for Art Nouveau, a style in jewelry design characterized by flowing lines and nature-inspired motifs. Jugendstil pieces often feature intricate craftsmanship.

A small, circular metal ring used to connect jewelry components. They are commonly employed in chainmaille and pendant assembly, providing flexibility and movement.

Junk jewelry, also known as costume jewelry or fashion jewelry, refers to inexpensive and decorative accessories made from base metals, plastic, glass, or non-precious gemstones. Unlike fine jewelry, which uses precious metals and gemstones, junk jewelry is primarily worn for fashion purposes and is more affordable. Despite its lower cost, junk jewelry can still be stylish and trendy, allowing individuals to accessorize their outfits without breaking the bank.

Jewelry made using jute fibers, often associated with eco-friendly and sustainable practices. Jute jewelry embraces natural materials, offering a unique and environmentally conscious alternative in the world of accessories.

Placing contrasting elements together in jewelry design for visual impact. Juxtaposition can involve combining different materials, colors, or textures to create dynamic and eye-catching pieces.

Gemstones believed to have astrological and metaphysical properties in Vedic astrology. Jyotish gemstones are chosen based on individual birth charts to enhance positive influences and balance energies.