Gemstone Drilling

Gemstone drilling became part of Sacred Threads in December 2025, following the arrival of the first specialist drill. The technique was developed entirely through self-directed learning, extensive practice and ongoing refinement of equipment and methods.

Today, precision drilling and micro drilling form part of the specialist craftsmanship offered by Sacred Threads, allowing natural gemstones to be transformed into pendants, earrings and bespoke jewellery components.

The Technique

Gemstone drilling requires an understanding of mineral hardness, structure, thickness and heat sensitivity. Each material behaves differently, meaning drilling techniques, pressure and completion times must be adapted accordingly.

Using specialist diamond-coated drill bits, gemstones are drilled under water using a controlled, intermittent technique. The drill is repeatedly engaged and withdrawn, allowing water to cool the contact area and clear mineral debris.

This process helps manage heat, minimise unnecessary stress on the gemstone and preserve the integrity of the material.

Equipment selection is equally important. Following experimentation with different chuck systems, a keyless chuck was selected for its secure grip and stability when working with particularly fine drill bits.

Precision and Micro Drilling

For pendants, Sacred Threads typically uses 1 mm drill bits, creating small, discreet openings while preserving the gemstone's appearance.

For earrings and smaller components, 0.8 mm micro drilling is carried out under magnification, allowing greater control and accuracy when working with delicate materials.

At these diameters, even minor changes in pressure, positioning or drill stability can affect the outcome, making careful handling essential.

Working with Different Gemstones

Drilling times vary significantly depending on the material, its dimensions and the finish of the stone.

Harder materials such as quartz require greater patience, particularly when working with thick, double-sided polished cabochons. Some quartz pieces have required up to seven hours of drilling due to their depth and resistance.

Larimar presents its own challenges due to variations in its structure, while Tiger's Eye requires particularly careful heat management.

The shape of a gemstone is also an important consideration. A shallow cabochon, raw specimen and fully polished, double-sided stone can each require a different drilling approach.

There is no standard drilling time. Every gemstone is assessed and worked individually according to its characteristics.

Behind the Scenes

The accompanying video provides a closer look at the drilling process, demonstrating the precision, patience and technical considerations involved in creating Sacred Threads' drilled jewellery.

From equipment preparation and water-cooled drilling to working with different mineral structures, the footage offers an insight into the craftsmanship behind each finished piece.

Every drilled gemstone reflects a considered balance of technical skill, specialist equipment and respect for the material.

Play below to see some behind the scenes footage and learn more about the process.