Covington Engineering

Free Ground Shipping in the lower USA 30-Day Return Policy/No Restocking Fees Customer Support is always available!       Email: support@thegemston...

60/90 Grit Blend – Stage 1 Tumbling & Lapping Abrasive 60/90 Grit Blend is the go-to abrasive for the first stage of rock tumbling and lapping,...

Free Ground Shipping in the lower USA 30-Day Return Policy/No Restocking Fees Customer Support is always available!       Email: support@thegemston...

Free Ground Shipping in the USA 30-Day Return Policy/No Restocking Fees Customer Support is always available!       Email: support@thegemstonelab.c...

Covington Tumbler Grit & Polish Kit – Complete 6-Step Kit for Rock Tumbling Success Start strong and finish brilliantly—everything you need for...

120/220 Grit Blend – Stage 2 Tumbling & Lapping Abrasive The 120/220 Grit Blend is the ideal abrasive for Stage 2 of the tumbling process, desi...

Cerium Oxide is a fine, reddish-brown powder used by lapidaries and glassworkers to achieve a flawless, mirror-like polish on both stones and glass...

When your lapidary project moves beyond shaping and into the critical pre-polish stage, the right disc makes all the difference. Resin Bond Diamond...

Covington Deluxe Tumbler Grit & Polish Kit – Enhanced 7-Step Kit for Smoother Stones and a Superior Shine Take your tumbling to the next level ...

Free Ground Shipping in the lower USA 30-Day Return Policy/No Restocking Fees Customer Support is always available!       Email: support@thegemston...

Achieve a cleaner, brighter polish with less mess and better consistency. These synthetic perforated felt discs are compatible with all Covington a...

Keep your diamond saw blades cutting clean and efficiently with Covington’s high-quality dressing blocks. Over time, diamond blades can become glaz...

Old Miser – Grit Binding Agent for Faster, More Efficient GrindingOld Miser is the secret weapon for anyone looking to get the most out of their gr...

Protect Your Work, Perfect Your PolishWhen you're working with delicate stones or smaller pieces, the final polish can make or break the result. Ou...

Free Ground Shipping in the USA 30-Day Return Policy/No Restocking Fees Customer Support is always available!       Email: support@thegemstonelab.c...

Free Ground Shipping in the lower USA 30-Day Return Policy/No Restocking Fees Customer Support is always available!       Email: support@thegemston...

Free Ground Shipping in the lower USA 30-Day Return Policy/No Restocking Fees Customer Support is always available!       Email: support@thegemston...

Free Ground Shipping in the lower USA 30-Day Return Policy/No Restocking Fees Customer Support is always available!       Email: support@thegemston...

Take your stones to the next level with the Covington Magnetic Backed Resin Bond Diamond Discs. Designed specifically for pre-polishing, these pre...

Professional-grade polishing compound designed to produce an exceptional mirror-like finish with maximum efficiency. Featuring a high concentration...

Make maintenance simple and precise with the Covington Spanner Wrench, designed specifically for use with the Covington Flat Lap series. This essen...

Keep your diamond discs perfectly aligned with the Flat Lap Centering Pin — a 5/8"-11 threaded brass pin designed to thread securely into the cente...

Achieve a flawless, high-gloss finish on curved glass surfaces with this precision-crafted felt cone for lapidary flat laps. Designed specifically ...