Update 5th July 2025
Update: We used to sell these items as ZillerCoin but that was a private seller account now we moved the business side of things here, unfortunately we have lost our 2.5K 100% positive feedbacks and selling history.
Read the description of the crystals before you buy them please.
Brand new high dome watch "crystals" from 19.0 mm to 40.0 mm, the price is for 1x crystal, however there is a discount if you buy more:15% off if you buy 2
20% off if you buy 3
30% off if you buy 4 or more
High dome:
We are calling these crystals high dome because this is how they are sold or this is how the manufacturer calls them, bearing that in mind you must read the full description to understand what the high dome exactly means. One more note about this, the range between 350 and 400 has about the same height as the 278-324 range. So they have a larger diameter with the same height meaning that they do not look like a high dome crystals just domed. There is no definition what is high dome and what is not so carry on and do your homework by reading the description please.
We post the "crystals" as soon as we can using royal mail 2nd class, please contact us if you have any issue before you leave a negative feedback. Having a happy customer leaving positive feedback is far more important than earning a little amount of money. Royal Mail does not track 2nd class letters. If you don't receive it we simply send you another one, or we offer a refund, up to you.
One of our customer asked for dimensions of a 316 crystal and here are the results:
316 shows up as 31.52 mm, inner diameter shows up as 29.51 mm, it gives us approximately 1 mm wall thickness, we measured it as 0.96 mm separately. We have the math more or less. We measured the whole height which is somewhere between 4.25 and 4.35 mm. It was difficult to measure it as the diameter of the crystal is wider than the flat section of our caliper jaws so we had to use a plastic card, measured the plastic card and the crystal together and measured the plastic card only, then made the deduction.
We are generally interested in watches and clocks and anything related to watches and clocks. We have not got the time yet, but we are going to compare high domed 292 crystals, DPA, Sternkreuz HH and any of the older crystals which are not in production anymore and we can put our hands on.
Any other questions please feel free to ask.
Update on 17th of September 2020:
Added two more pictures where we compared 4 crystals together. An original crystal coming from a case hiding a CAL400 movement from Services, a DPA, a sternkreuz HW and a sternkreuz HH, you can see them in this order on the pictures from the left to the right. We used a cheap but relatively accurate digital caliper to measure the height and diameter of them.
Diameter Height
Original Services 29.1 mm 4.4 mm
DPA 29.11 mm 3.75 mm
sternkreuz HW 29.3 mm 4.0 mm
sternkreuz HH 29.25 mm 4.7 mm
Unfortunately we cannot measure the inner height but the official data is 2.7 mm for sternkreuz HW and 3.7 mm for sternkreuz HH. Expect that it will be less for the DPA.
Update 19.02.2021
The manufacturer claims that every crystal is smaller by 0.05mm than the size written on the box by design. So a 29.2 mm watch is supposed to be 29.15 mm +/- 0.02 mm. However when we measured some of the crystals picked up randomly we measured a wider range of spread. Generally speaking they are even smaller than the designed diameter. We measured crystals from the range 29.0 - 32.2, picked one random crystal from a box containing 10 crystals (i had 8, 9 or 10 boxes) and the result is the following:
| pack1 | pack2 | pack3 | pack4 | pack5 | pack6 | pack7 | pack8 | pack9 | pack10 | |
| 29.00 | 28.95 | 28.91 | 28.93 | 28.92 | 28.92 | 28.94 | 28.93 | 28.93 | 28.92 | 28.94 |
| 29.20 | 29.12 | 29.12 | 29.12 | 29.12 | 29.13 | 29.12 | 29.12 | 29.12 | 29.10 | 29.12 |
| 29.40 | 29.32 | 29.38 | 29.32 | 29.30 | 29.32 | 29.32 | 29.30 | 29.30 | 29.29 | 29.30 |
| 29.60 | 29.48 | 29.51 | 29.47 | 29.49 | 29.48 | 29.48 | 29.48 | 29.49 | 29.49 | |
| 29.80 | 29.72 | 29.70 | 29.70 | 29.71 | 29.71 | 29.70 | 29.70 | 29.70 | 29.71 | 29.70 |
| 30.00 | 29.91 | 29.89 | 29.91 | 29.91 | 29.92 | 29.91 | 29.90 | 29.91 | 29.94 | |
| 30.20 | 30.13 | 30.11 | 30.13 | 30.13 | 30.12 | 30.12 | 30.11 | 30.11 | 30.12 | |
| 30.40 | 30.33 | 30.32 | 30.33 | 30.35 | 30.34 | 30.32 | 30.33 | 30.33 | 30.33 | |
| 30.60 | 30.49 | 30.48 | 30.47 | 30.48 | 30.47 | 30.48 | 30.48 | 30.49 | 30.53 | 30.51 |
| 30.80 | 30.68 | 30.67 | 30.66 | 30.71 | 30.70 | 30.70 | 30.67 | 30.68 | 30.71 | 30.72 |
| 31.00 | 30.93 | 30.93 | 30.93 | 30.92 | 30.92 | 30.92 | 30.92 | 30.92 | 30.93 | |
| 31.20 | 31.12 | 31.11 | 31.09 | 31.10 | 31.10 | 31.11 | 31.11 | 31.13 | ||
| 31.40 | 31.31 | 31.35 | 31.33 | 31.32 | 31.31 | 31.28 | 31.33 | 31.34 | 31.39 | 31.31 |
| 31.60 | 31.52 | 31.49 | 31.49 | 31.50 | 31.52 | 31.50 | 31.49 | 31.49 | 31.52 | 31.50 |
| 31.80 | 31.74 | 31.71 | 31.72 | 31.74 | 31.72 | 31.73 | 31.68 | 31.74 | 31.71 | 31.71 |
| 32.00 | 31.95 | 31.99 | 31.95 | 31.99 | 31.97 | 32.00 | 31.97 | 31.99 | 31.97 | 31.98 |
| 32.20 | 32.14 | 32.12 | 32.12 | 32.14 | 32.14 | 32.14 | 32.11 | 32.17 | 32.10 |
We do therefore recommend to buy two crystals next to each other in size, just like your teacher would recommend when you learn watchmaking. Especially if you are in the situation when you have difficulties to measure the exact size for any reason. (you don't have a caliper, missing original and its difficult to measure the size on the watch, anything like that).
Update 03.03.2021
We have listed 10x high dome DPA crystals and new old stock - not in production anymore - crystals as well, and many NOS crystals are still waiting for to be listed. Have a look at our other listings time to time. We am slowly going to put them on eBay as time allows.
Update 26.12.2021
Another comparison for size 292 DPA, BCL and Stella
Total height (not inner height):
DPA 3.77 mm
BCL 4.45 mm
Stella 4.48 mm
BCL and Stella are almost identical but if you have a look at the pictures we attached, you can see a slight difference in shape between the two.
Measuring the crystal:
When you measure the diameter of the crystal put the crystal on your table upside down so it would shape a U instead of an n. Measure the very top edge of the crystal with your caliper holding the caliper in such a way that the plane of the caliper jaws is parallel with the plane of the table top ensuring that you actually measure the diameter of the crystal.
