Get in touch

If you have any questions regarding anything on our website, or need further information, please call or email John Titcombe Fine Jewellery and we will be happy to help.

  • Cirencester Tel: 01285 655754
  • Bristol Tel: 0117 9733178

Key information about diamonds

Brilliance Light reflected through the crown. Cut is foremost, but color and clarity are also characteristics linked to to a gem's brilliance.

Brilliant Facets Kite-shaped and triangular facets.

Crown The section of the stone above the girdle.

Dispersion The internal fireworks of a diamond, dispersions is technically the breakup of white light into rainbow colors. This magical feature cannot be captured on film. It is the life of the gem.

Gem Grading Reports Gem reports are a gemologist's review of quality with graphs and letter grades evaluating the 4Cs. One of the well-respected gem grading reports comes from the Gemoligical Institute of America (GIA). Some fine jewelry firms such as Tiffany & Co. issue their own diamond certificates. If a jeweler does not show a couple a report for the stone they are planning to buy, they might consider going elsewhere.

Girdle A narrow band of facets seperating the crown from the pavillion.

Facet The small planar surfaces of a cut diamonds.

Fancy Color Diamonds Colored diamonds, such as pink and yellow.

Fancy Cut An umbrella term used for all diamond shapes except the round brilliant cut.

Fire The lively light of a diamond. Fire is a synonym for dispersion.

Flawless A diamond that shows no internal or external imperfections under a 10-power jeweler's loupe.

Inclusion Any internal flaw.

Mixed and Modified CutsSome diamonds are not textbook examples of a shape. Stones with brilliant-style facets, say, and a few step cuts are called mixed cut. Modified cut is used to refer to gems with more or fewer facets than the classic round brilliant cut. A mixed or modified cut is not a sign of lesser quality. These unique stones are often highly coveted for their originality.

Octahedron An eight-sided solid, resembling two pyramids joined at the base; the natural form of most diamond crystals.

Pavillion The section of the stone below the girdle.

Rough An uncut diamond.

Spread An extra-large table table, usually more than 60 percent of the crown.

Step Cuts Long slender facets, step cuts usually appear in threes going up crowns and down pavillions like stairs.

Stone Papers Sheets of special jeweler's paper, folded into little packets to hold a diamond. The gem's weight, color, and clarity grade are generally written on the outside. A couple will see stone papers if they choose a diamond before it is put into a setting - a common practice with engagement rings.

Table The largest facet on top of the stone, paralled to the girdle.

If you would like further information, you can call us in Cirencester on 01285 655 754 or Bristol 0117 973 3178, alternatively visit us at our jewellery stores in Clifton, Bristol or Cirencester.

Diamond Glossary

Every item of diamond jewellery is a small miracle. The diamonds that are used in jewellery were formed from carbon deposits millions and sometimes billions of years ago, deep under the earth in intense heat and pressure.

From here they were carried by powerful lava flows to the earth's surface, and millions of years later they were mined by us and turned into the diamond jewellery that we now wear.

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© 2015 John Titcombe Bespoke Jewellery
39 Market Place, Cirencester, Glos. GL7 2NX Tel: 01285 655 754
2-4 The Mall, Clifton, Bristol BS8 4DP Tel: 0117 973 4961
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