Jewelry Glossary

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    • Baby Ring

      Baby ring is given with wishes that the baby will grow up healthy. It is given from grandparents or parents to their children in commemoration of the birth. Baby rings are made to fit a baby's finger, so the size is extremely small. Some people use a baby ring as a pendant head.

    • Baguette Cut

      The baguette cut is a rectangular step cut.
      Many gems cut this way are small in size because the risk of chipping the corners increases with size. To minimize the risk of chipping, most large gemstones are cut into emerald cuts which have more resiliant corners.
      The square step cut is called "Karee" and it is used for band rings which gemstones are set over the entire circumference of the ring.

    • Bail

      The bail of necklace is a part that connects the chain and the pendant top. It supports the pendant top to face forward when wearing a necklace.

    • Ball Bracelet

      Ball bracelets are composed of spherical gemstones or metals. Pearls as well as other materials like turquoise and crystal can also be used.

    • Ball Chain

      A ball chain is a chain with ball-shaped parts. This chain is made by rounding a thin plate into a cylindrical shape and cutting it while squeezing it into a spherical shape, then connecting the wire material (spherical) into the ball. The ball with a cut facet is called a "cut ball."

    • Bangle

      The bangle is a circular type of bracelet with no fasteners. It is relatively more voluminous than other typical bracelets.
      There are various shapes of bangles, such as circle, oblong, C-shaped, horseshoe shaped, square, and octagonal shaped.

    • Bead Setting

      The bead setting is to make a small prong by curving the surface of the metal and fixing melee size gemstones.
      Care must be taken in case moh's hardness of setting gemstones is less than 7 and should be avoided setting the gemstones whose moh's hardness is less than 4.

    • Belcher Setting

      Belcher setting is one of the techniques of bead setting.
      U-shaped curves, which are a bit bigger than a gemstone, separate the prongs and make a petal-like design.

    • Benitoite

      Benitoite was initially considered sapphire when first founded in San Benito Mine, California, in 1907. It is mostly blue, but colorless and pink are also produced. Due to the strong dispersion and dichroism, the blue cut one seems colorless depending on the direction you look from.
      [Moh's hardness: 6] [Mineral species: Benitoite]

    • Beryl

      Beryl, represented by emeralds and aquamarines, has been used as a gem since ancient times. Around 1925, many applications of Beryllium, which is a major element of beryl, were discovered and since then it has become widely explored as a resource mineral. Beryl was named after "beryllos" which means green stones in Greek. The elements which give beryl its green hue are trace amounts of chromium and vanadium, and the light blue of aquamarine is due to trace amounts of iron.

    • Bezel Setting

      A bezel setting is a general term used for setting styles. Channel setting and rim setting are categorized as this setting, and the gemstone is surrounded by metal.

    • Bib Necklace

      Please refer to "shower necklace."

    • Bi-colored Tourmaline

      Bi-colored tourmaline is a mysterious looking gem which displays two colors such as pink and green or pink and blue in a single crystal. It is often polished to a step cut to enhance the combination of colors. The color combination is unique to each stone therefore subjective taste plays an important part in judging these stones. Market value is determined based on color balance such as pink and pale green, pink and blue.
      [Moh's hardness: 7] [Mineral species: Tourmaline]

    • Birth Stone Ring

      Birth stone ring is a ring with a birthstone, and it is believed that the ring will avoid misfortune and bring happiness. The habit to wear birthstones has begun among Jews around the 18th century.

    • Black Opal

      The body color of black opal is black or gray, and it is semitransparent or opaque.
      [Moh's hardness: 5] [Mineral species: Opal]

      Please click

      to see the details of Kyocera's Crescent Vert black opal.

    • Block Chain

      Block chain is a continuous connection of precious metal plates or rods, etc. The snake chain and ball chain fall into this category.

    • Bloodstone

      Bloodstone is also called heliotrope. It is deep green chalcedony with spots of red jasper.
      The spots look like drops of blood.
      In medieval Europe, it was believed that the gem prevented nosebleed, that it would calm anger, and was a remedy for inflammatory diseases.
      [Moh's hardness: 6] [Mineral species: Chalcedony]

    • Blue Chalcedony

      In a narrow sense, chalcedony refers to a bluish white gray species similar to blue chalcedony. The most transparent and beautiful stones are not currently produced, dyed ones are sometimes available at the market.
      [Moh's hardness: 6] [Mineral species: Chalcedony]

    • Blue Diamond

      The colors of prized blue diamonds are thanks to the presence of trace amounts of Boron.
      It mainly originates from the premier mines in South Africa where only a small amount is produced. Stones that do not contain grayish hues are more sought after. Due to the small absolute quantity produced, it is very difficult to find superior quality pieces.
      There are also diamonds on the market that are of poor quality, treated at high temperatures and pressures, and irradiated to turn them blue.
      [Moh's hardness: 10] [Mineral species: Diamond]

    • Blue Topaz

      Currently, 99% of blue topaz in the market is artificially colored by irradiating colorless topaz. This treatment for blue topaz became popular in 1980s soon after the market was flooded with blue topaz. Colorless topaz is produced in large amounts, so radiation expenses and polishing cost makes up a substantial portion of the cost.
      [Moh's hardness: 8] [Mineral species: Topaz]

    • Boulder Opal

      Boulder opal means "big round stone" in English.
      It is taken out from the opal layer stuck along a mother rock of iron ore. There are doublets and triplets in the market, and it isn't easy to distinguish unless you check it from the side.
      [Moh's hardness: 5] [Mineral species: Opal]

    • Brazing (Welding)

      Combines two independent pieces of metals. The metal used for brazing is called a brazing rod. Usually, a gas burner is used when joining gold to gold/silver to silver. And an oxy-fuel burner is used when joining platinum to platinum.

    • Brilliancy

      Brilliancy is a sparkle of brilliant cut and step cut gemstones. Furthermore, it is a visible white light seen by refraction and reflection.

    • Brilliant Cut

      Brilliant cut is based on tolkowsky proportions, and polished to a total of 58 surfaces. It maximizes the brilliance of a diamond and fire considering optical properties such as refraction and reflection.

    • Briolette Cut

      The briolette cut is a drop-shaped cut with a triangular or rectangular surface. When it sways, it shows a unique brilliance reminiscent of a mirror ball. Normally, it has a hole at the tip and is connected in series to make a necklace or hung to make earrings.
      It is difficult to find a rough stone that can be cut into briolette because a long rounded and highly transparent rough stone is needed for this cut.

    • Brooch

      A brooch is a type of jewelry typically worn around the chest area, but can also be used for wrap-around skirts and scarf pins. Brooches are relatively large compared to other types of jewelry. This unique characteristic allows the designer to fully demonstrate their originality.

    • Bruting

      Cutting a diamond by hand to give the diamond its shape is called bruting.

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