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Cutting rough stones is a fundamental ability for a gemstone cutter. As a lapidary, you’ll deal with a myriad of various stones: little, big, round, oval, misshapen, raw, and everything in between.

Rough stones are large pieces of natural, uncut materials that lapidaries break and cut into smaller sized pieces. There are two main methods for cutting rough stones and the breadth of details involved with each.

Continuing with our Lapidary Fundamentals series, continued reading as we take the great details of cutting rough stones. And how do you cut stones? Click for more.


  1. Mark first showed how to cut stone using a feather and wedge system:
  2. Start by drilling holes in the stone along the line you wish to cut.
  3. Location the feathers on the exterior of the hole and the wedge in between them.
  4. Gently tap on the wedges using a hammer. Listen carefully and pay very close attention to the vibrations in the hammer to guarantee the rock is splitting slowly and carefully. This step ought to take a while.
  5. Keep tapping on the wedges as needed till the stone splits.
  6. Mark then showed how to cut stone utilizing a hand tracer:
  7. Identify the line for the preferred cut.
  8. Location the hand tracer directly down on the line and tap the end of it with the hammer.
  9. Slide the hand tracer along the line, tapping it with the hammer as you go. The goal is to develop a channel for the tracer to ultimately move into.
  10. Continue to move the tracer and hit it with the hammer along this line till the stone divides.
  11. Mark explained how to smooth out cuts and edges utilizing a hand point:
  12. Point the hand point along the bottom edge of any bumps.
  13. Gently tap the hand point with a hammer and attempt to get below the bump.
  14. Continue this process gradually and thoroughly till the bump separates from the stone.

Which Diamond Shape Looks Biggest For Carat Size?

When shopping for diamonds, people frequently desire a stone that looks as huge as possible without needing to spend their life’s savings. A diamond’s weight is determined in carats, and while a greater carat number usually means a bigger diamond, expert cutters comprehend how to make little stones appear large and luminescent. A stone that looks larger than its carat size is referred to as having “great spread.”

There are a number of concerns you can ask a jewellery expert if you desire a diamond to have excellent spread. The Gemologist Institute of America concerns cut grades on diamonds, assessing the quality of their angles, cuts and facets. Search for stones with a cut grade of “Exceptional.” Next, check out the shape. Round diamonds are fantastic at showing light and appearing huge, dazzling and radiant even if their carat size is relatively little. An understanding of the entire diamond cutting process can help guarantee that you’ll get a great deal of bang for your buck with your diamond purchase.

Strategies For Making Stone Tools

The always basic and very first method utilized the hammer rock to fashion either a big and disrespectful core tool such as the chopper, whose type continued for maybe 2 million years or to rough out (block in) large tool blanks that would be brought to the last by removing small flakes. A variation used the anvil stone, a large stationary rock versus which the workpiece was swung to batter off big flakes.

The 2nd technique was the soft-hammer, or baton, strategy, based upon the discovery of possibly 500,000 years ago that hard rock (flint in particular) might be broken by striking it with a softer product. The baton was a light “hammer,” a practically foot-long piece of bone, antler, and even wood, whose gentler blows detached only rather small flakes that left smooth, shallow scars. Such small flakes, when removed from the large scars left by the hammerstone, minimized the coarse and jagged edge to numerous little serrations, providing a straighter and more uniform cutting edge whose angle was also more severe than previously and, for this reason, sharper.

Tools Needed for Cutting Rough Stones

Some gemstones are softer and more fragile and need more skill throughout the cutting procedure. Instead of jeopardizing a precious stone like an opal, you can cut delicate gems more gently with saws and nippers.

Tile Nippers

When you crack open a rough stone, you’ll require tile nippers to eliminate small bits of material from the edges and crevices of the stone. Secure the nippers around the location you wish to get rid of and squeeze the tool.


A grinding wheel is a tool utilized for cutting curves into rough stones. However, the utmost care should be placed into grinding vulnerable stones, which can collapse from the fractures within. Mills are ideal for durable, resistant gemstones.


Among the necessary tools in your studio for cutting rough stones is a saw. There is a range of various saws you can use to cut rough stones, each designed for specific jobs. No matter which saw you utilize on a given day, something makes certain: you’ll be investing a great deal of time sawing gems.



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