As some of you are aware, today we released a new material. Gold plated Brass is now available! For details on the release, check out the blog post here. I'll answer some of the questions we've seen asked, and if you have any further questions, please feel free to comment below. 1) pricing: For a few models, premium silver is less expensive. That is because premium silver is $28 per cc up until 3.4cc's. Where Gold plated Brass is $35 per cc across the board. As with all pricing, especially trial pricing, this is subject to change. 2) interlocking, non-connected parts: Gold plated Brass has the same rules as premium silver, so no interlocking parts not connected. And only one piece per file except cuff links and ear rings. 3) Alternate finishes: We are always looking to expand the number of high quality material options we offer and are working hard on R&D to make sure you can hold the latest and greatest in your hands. You can expect lots more from us...and keep the feedback coming!