Herkimer Diamond - Facet

This extraordinary Herkimer Diamond is cut into a rare double-cone faceted form, measuring 8.6mm by 5mm with a height of 5mm, giving it a striking, sculptural presence unlike traditional gemstone cuts. Carved from naturally double-terminated quartz, this piece retains the crystal’s inherent clarity and internal character while enhancing it with precise faceting that wraps around the entire form.

The result is a gemstone that appears to glow from within, with light entering and exiting through multiple angled surfaces. Natural inclusions, subtle internal fractures, or faint “rain” textures may be visible, all contributing to the organic, raw beauty Herkimer Quartz is known for. The double-cone silhouette gives the stone a modern yet mystical quality, almost like a faceted crystal talisman.

Its compact but dimensional shape makes it ideal for statement rings, unique pendant designs, or experimental artisan settings where the geometry of the stone can be fully appreciated from all angles. It pairs beautifully with both sterling silver and gold, and works especially well in designs that lean into natural crystal aesthetics or geometric minimalism.

Key Properties & Care

Herkimer Diamond is a naturally double-terminated quartz crystal, valued for its clarity, sparkle, and unique formation.

Mohs Hardness: Quartz has a hardness of approximately 7, making it durable and suitable for most jewellery applications.

Cleaning: Clean gently with warm soapy water and a soft brush or cloth. Ultrasonic cleaners are generally safe for Quartz, though gentle hand cleaning is recommended due to the presence of natural inclusions and internal stress lines.

Maintenance:
Durability: While Quartz is relatively hard, Herkimer Diamonds can be more brittle than standard quartz due to internal fractures and natural growth structures. Care should be taken to avoid sharp impacts.
Surface Finish: The full faceting enhances the crystal’s natural brilliance and creates dynamic light return from every angle of the double-cone form.
Storage: Store separately in a soft pouch or padded box to protect against scratching or accidental chipping.

All photos are for indication only. We cannot guarantee that your screen is displaying the actual colour or refraction of the gemstone.