LogoLogoLogoLogo
  • Diamond Education
    • The Four C’s
      • Diamond Cut
        • Round Cut Diamonds
        • Oval Cut Diamonds
        • Princess Cut Diamonds
        • Cushion Cut Diamonds
        • Asscher Cut Diamonds
        • Pear Cut Diamonds
        • Radiant Cut Diamonds
      • Diamond Carat
        • 1 Carat Diamond Rings
        • 1.5 Carat Diamonds
        • 2 Carat Diamond Rings
        • 3 Carat Diamond Rings
        • 4 Carat Diamond Rings
        • 5 Carat Diamond Rings
      • Diamond Color
        • D Color Diamonds
        • E Color Diamonds
        • F Color Diamonds
        • G Color Diamonds
        • H Color Diamonds
        • I Color Diamonds
        • J Color Diamonds
        • K Color Diamonds
      • Diamond Clarity
        • F & IF Clarity Diamonds
        • VVS1 Clarity Diamonds
        • VVS2 Clarity Diamonds
        • VS1 Clarity Diamonds
        • VS2 Clarity Diamonds
        • SI1 Clarity Diamonds
        • SI2 Clarity Diamonds
        • i1, i2, i3 Clarity Diamonds
    • Diamond Prices
    • Where to Buy Engagement Rings Online
    • Diamond Videos and Imaging
      • HCA Tool
      • ASET Tool
      • Ideal Scopes
      • Sarine Reports
      • Hearts and Arrows
    • Diamond Certification
      • GIA Certification
      • IGI Certification
      • EGL Certification
      • GSI Certification
      • The GIA vs AGS
      • How to Read a Diamond Certificate
    • VVS Diamonds
    • Read More Diamond Education
  • Diamond Reviews
    • Blue Nile Review
      • Astor by Blue Nile™ Review
    • James Allen Review
      • True Hearts™ by James Allen Review
    • Whiteflash Review
      • A CUT ABOVE Diamonds® by Whiteflash Review
    • Brilliant Earth Review
    • Sam’s Club Review
    • Zales Review
    • Kay Jewelers Review
    • Peoples Jewellers Review
    • Tiffany & Co. Review
    • Hearts on Fire Review
    • Jared Jewelers Review
    • Angara Diamonds Review
    • Shane Co. Review
    • Diamonds Direct Review
    • Read More Diamond Reviews
  • Designer Reviews
    • Tacori Review
    • Jeff Cooper Review
    • A. Jaffe Review
    • Scott Kay Review
    • Ritani Review
    • Verragio Review
    • Simon G Review
    • Martin Flyer Review
    • Read More Designer Reviews
  • Blog
  • Contact
  • Diamond Districts
    • Houston
    • NYC
    • LA
    • Chicago
✕

How Are Diamonds Polished?

  • Home
  • Uncategorized
  • How Are Diamonds Polished?

This article has mentions of products from one or more companies, and I may receive compensation if you purchase those products following reading my recommendations.

 

There used to be a time when cutting rough diamonds was a basic and very slow procedure of polishing a few strategic facets just to give the stone a little flash and capture a little fire.

At present day, however, modern technology has offered us numerous tools to do amazing things in transforming rough diamonds into polished diamonds, optimizing the brilliance, fire, and scintillation of this extraordinary form of crystallized carbon.

And cutting-edge light ray tracing computer software is allowing new diamond designs to be created, some of which have hundreds of facets.

Diamonds found in their rough state are nowhere near as impressive. They lack the magical sparks of light, something that gives a finished diamond its worth and status.

It is in polishing that a major chunk of the price of a diamond is acquired; for the art of transforming a rough diamond into a sparkling brilliance a long procedure that calls for a superlative degree of skill.

The actual process of how diamonds go from their raw form to polished state involves five main steps:

  1. Planning
  2. Cleaving
  3. Bruiting
  4. Polishing
  5. monitoring

1. Planning

In the planning process, the cutter will figure out the best possible diamond shapes in order to maximize the yield of the rough gemstone and minimize wastage. Once this step is over, the diamond is cleaved.

2.Cleaving

Cleaving involves splitting the rough into various pieces that will then enable the cutter to work on each of them separately in order to utilize the rough properly.

3. Bruiting

Once the diamond is split, bruiting is then done to make the separated rough stones round. During this step, two diamonds are put on a revolving axle across each other. They are turned into opposite directions and allowed to grind against each other for the purpose of creating a rough girdle finish.

4. Polishing

After the rounded shape of the rough diamond is formed, the next step is to form and create the diamond’s facets. The cutter puts the rough on a spinning arm and uses a rotating wheel to polish the rough. What this does is create reflective and smooth facets on the diamond. This procedure of polishing is mainly divided into 2 additional steps:

  • blocking
  • brillianteering

Blocking

In the blocking step, 8 crowns, 8 pavilion mains, 1 table facet and 1 cutlet are added to make a single cut stone.

Brillianteering

The brillianteer will then come into the picture to the complete the job by adding the remainder facets and bringing it to a total of 57 facets.

Today, laser technology plays a huge role in diamond cutting and polishing. Precision measuring instruments utilizing laser technology are used to measure each diamond facet during the crafting stage.

Lasers are also used to complete some of the initial slicings of the rough, separating dissimilar facetable pieces, each to be turned into a finished, polished diamond, and thus utilizing the material for maximum yield.

In addition, the advances in polishing and faceting machinery that minimize deviations and vibration allow for more accurate control of alignment and angles of facets.

These capabilities allow the most dedicated and skilled cutters to harvest ideal and super ideal diamonds, taking diamond light performance to a whole new level.

The entire cutting and polishing process may take a couple of days, weeks or even months. Big and important stones are oftentimes kept in the planning stage for longer periods of time as decisions on the right approach are extremely crucial and there remains so much indecision with some rough diamonds.

Examples of diamonds that spend the most time in the planning stage include Hearts and Arrows and Super Ideal diamonds. This is because these kinds of diamonds call for much more time, expertise and effort because the level of accuracy required is just extreme.

5. Monitoring

Once the diamond has been cut and polished, the final stage is the inspection process. This is where the diamond is thoroughly monitored to make sure it meets the standards and specifications put forward by the manufacturer.

If the need arises, the diamond would be re-sent to the polishers for some additional touching up if it previously failed to meet the quality control standards.

After the diamond has passed through all the five stages, it is usually sent to the gemological labs for a grading certificate to be acquired. This report not only increases the worth of the stone but also helps people purchase it with more trust and confidence.

Louis Jacobs

I’m Louis Jacobs, the creator of Diamond Expert, a platform where I share my lifetime’s knowledge of diamonds. Born and raised in Antwerp, Belgium, the world’s diamond hub, my fascination with these precious gems began at a young age. I spent over three decades in the diamond industry, earning the reputation of a trusted advisor among friends and family for diamond purchases, particularly engagement rings. Now retired, I’m dedicated to providing online guidance to make your diamond buying experience informed and successful.

Related posts

September 3, 2022

A Complete Guide to the Average Engagement Ring Cost


Read more
August 1, 2022

Where to Buy Lab-Grown Diamonds Online


Read more
how much to spend on a wedding ring
April 23, 2022

How Much Should You Spend on a Wedding Ring


Read more

Get the impartial advice you need…






    Diamond Education

    • The Four Cs
    • Diamond Color
    • Diamond Clarity
    • Diamond Carat
    • Diamond Cut

    Important Links

    • Free Diamond Buying Service
    • FAQ
    • FTC Disclosure
    • Contact
    • Sitemap
    © 2022 Diamond Expert. All Rights Reserved.