I do a lot of drilling of stones and sea glass to make many of the pieces we have on our website. However it is always something I dread when I need to drill a geode, quartz or anything that is hard over mohs hardness of 6.5. The reason I dread this is because the drilling can take up to 10 minutes depending on the thickness of the piece. I am using a simple setup of drilling with a diamond coated drill bit and manually drilling the piece. It seems to take a long time to get through any of these pieces. So I can across something called a diamond core drill bit. Basically it is the same drill bit coated with diamonds but has a hole through the center that is also coated with diamonds. I decided to give this a try – here is a picture of the diamond core drill bit I bought:
This drill bit is 1.5mm so I could drill through some geodes I had ready to be made into pendants. I gave it a try and was absolutely stunned when I was able to get through the first geode within about 30 seconds. It was one that I had started drilling months back and gave up because my drill bit was almost burnt out. I was only half way through it so I put it off to the side. I tried another one and again got through it within a minute. All told, I was able to drill through about 5 geodes within 5 minutes. Not bad at all! Now that the geodes are drilled, be on the look out for new Geode Druzy Pendants in our store!












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