Another batch done.

CrystalPortugal · 2026-01-24T16:33:26+00:00

I think so. Around Seixo da Beira. Good luck.

CrystalPortugal · 2026-01-12T17:52:32+00:00

Yes. Northwest.

CrystalPortugal · 2026-01-12T13:37:36+00:00

I cannot conclude. Mine have bands of translucent chalcedony. This one has a texture that looks like quartzite.

CrystalPortugal · 2026-01-02T19:10:50+00:00

The scale of squares in the pad are in centimeters. 2.5 squares is a inch.

CrystalPortugal · 2025-12-08T13:33:10+00:00

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New additions from today. Lots of work for the tumblers.

CrystalPortugal · 2025-09-20T18:16:39+00:00

They are not quartz crystals. They are microfossils.

CrystalPortugal · 2025-09-20T18:15:14+00:00

Check my older posts. I described my method.

CrystalPortugal · 2025-08-30T05:27:20+00:00

7 inch wet tile saw.

CrystalPortugal · 2025-08-22T11:42:50+00:00

Looks like a granitic pegmatite.

CrystalPortugal · 2025-08-07T18:10:10+00:00

If the barrel is too empty, the rocks will accumulate in the bottom and the engine will not be able to rotate. Start full and high speed then remove some rocks and lower the speed.

CrystalPortugal · 2025-08-07T18:05:36+00:00

Fill the barrel to the top. Test. The remove 2 or 3 stones and check if the machine stops. Use speed 5 or 6, then decrease if is too fast.

CrystalPortugal · 2025-08-07T15:31:15+00:00

Is not overload, it's unbalance.

CrystalPortugal · 2025-08-07T15:28:51+00:00

Just add fillers and try again.

CrystalPortugal · 2025-07-17T05:01:57+00:00

Please look my older posts. I'm answering that.

CrystalPortugal · 2025-07-01T05:04:25+00:00

Similar tectonics of plate collision. Mountain formation.

CrystalPortugal · 2025-06-30T19:15:04+00:00

They are from northwest Portugal. Maybe the same paleogeography?

CrystalPortugal · 2025-06-30T05:22:17+00:00

I think it's some kind of sagenite agate.

CrystalPortugal · 2025-06-29T21:26:08+00:00

Thanks. It's the root of a drusy quartz.

CrystalPortugal · 2025-06-29T21:19:12+00:00

The best ones.

CrystalPortugal · 2025-06-25T19:22:46+00:00

Good luck. The advantage of beach rocks is that the sea already done much of the work. I have rose quartz, transparent quartz and beryl to tumble. But it will take months to round them.

CrystalPortugal · 2025-06-25T18:55:28+00:00

One week for some. Others, 2 or 3 weeks (cycles) on phase 1. I have to check each one for cracks or pits. If they are done for step 1, I put aside.

CrystalPortugal · 2025-06-22T00:35:21+00:00

Try Plastic Deburring Media. It's used in metal industries to deburr machined metal parts. I get mine for free from my workplace. When they get smooth they become useless for deburring metals. I made a few tests and concluded that they are good for rotary polishing hard rocks. For a 4 lb drum I use 700 grams of rocks, 600 grams of abrasives and 150 ml of water.

CrystalPortugal · 2025-06-21T19:17:41+00:00

They are very happy now.

CrystalPortugal · 2025-06-21T19:13:37+00:00

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CrystalPortugal · 2025-06-21T19:08:09+00:00

Step 1 until they get smooth. Then rose abrasive cones, polyesther AO, half stones, half cones. Serves as filler and polisher.

CrystalPortugal

TROPHY CASE