Ancient stonemasons in Crete may have used simple handheld stone tools to shape limestone blocks for Minoan palaces nearly 4,000 years ago, according to new research. Experiments with stonemasons’ percussive tools suggest that local materials helped Bronze Age craftsmen build monumental structures without relying entirely on metal equipment.
The study, led by Athina Boleti, examined stoneworking techniques at the ancient palace of Malia, one of the major centers of Minoan civilization. Researchers tested different stones to determine which tools could have produced the marks preserved on the palace’s limestone blocks.
Ancient stoneworking at the palace of Malia
The first Minoan palaces appeared on Crete during the 19th century B.C., including major complexes at Knossos, Malia and Phaistos. These buildings featured carefully shaped rectangular blocks known as ashlar masonry. However, archaeologists have struggled to identify the tools used to prepare the harder stones.
Excavations at Malia’s Quartier Mu, an ancient district containing workshops and storage facilities, uncovered 146 percussive stone tools documented in an earlier study. None has been conclusively linked to palace construction. Boleti’s research sought to determine which tools could have been suitable for shaping the limestone used in Malia’s architecture.
Experiments reveal the most effective stone tools
Researchers tested 11 tools made from limestone, quartzite, andesite, granite and emery. A skilled craftsman, Panagiotis Gkiokas, used each tool for 30 minutes to flatten limestone blocks similar to those found at Malia. The experiments identified a local blue-gray limestone, known as “sideropetra,” as a particularly practical material. As the limestone tools struck the blocks, small pieces broke away, exposing fresh, sharp edges. This natural sharpening process allowed some tools to remain effective without additional shaping.
How did Minoan builders shape the massive stone blocks of Crete’s ancient palaces nearly 4,000 years ago?
New experiments reveal how simple handheld stone tools may have helped skilled craftsmen build some of the Aegean’s earliest monumental structures. pic.twitter.com/I0jdBVBh1i— Tom Marvolo Riddle (@tom_riddle2025) October 15, 2026
Quartzite removed approximately 169 cubic centimeters of stone during its 30-minute test, the highest amount recorded. However, local limestone offered advantages because it was readily available and could maintain useful working edges. Researchers found that tools weighing roughly 1 to 2 kilograms generally provided a practical balance between effectiveness and ease of handling.
Handheld tools reveal ancient craftsmanship
One limestone tool remained effective during approximately 220 minutes of handheld work, shaping about 1,300 square centimeters of stone. When researchers later attached a handle, the tool became easier to hold but less suitable for precise shaping.
Video recordings also showed the craftsman naturally loosening his grip to let the tool rebound after striking the stone. He regularly switched hands to reduce fatigue. Preliminary comparisons found that some experimental limestone tools produced rounded impact marks resembling those preserved at Malia.
One stone artifact from Quartier Mu, identified as 71MC83, also matched the characteristics of an effective stoneworking tool. However, researchers could not confirm its use in palace construction.
The study does not rule out bronze tools. Instead, it suggests that local stone, combined with skilled handling, offered Minoan builders a practical way to shape hard limestone. The findings add to growing research into the building techniques and architectural development of Minoan Crete.
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