DPI Direct is the original manufacturer/print house and the only authorized distributor of the Sinkankas Symposium Publications. The books are only available for purchase on this website, https://sinkankas.dpidirect.com. Production runs are based on demand. In past years, only enough books were printed for attendees of the annual event. Because a wider audience has expressed interest in obtaining back issues of the symposium proceedings, we are producing a short run of issues dating from 2014 to 2023. To make the books affordable, at only USD 42.50 each*, they may be pre-ordered for a limited time period. They will be unavailable for purchase after May 15th, 2023.

*plus tax (if applicable) and shipping.

The last day to order is May 15, 2023 5:00 pm PDT. The books will be unavailable for purchase after May 15th 2023. This is the one and only opportunity in 2023 to purchase, this is the last extension on the deadline.

2023: Nineteenth – San Diego County Gems and Minerals
2022: Eighteenth – Alexandrite and Other Color-Change Gemstones
2021: Seventeenth – Agate and Chalcedony
2019: Sixteenth – Pearl
2018: Fifteenth – Tanzanite and Tsavorite
2017: Fourteenth – Sapphire
2015: Thirteenth – Opal
2014: Twelfth – Peridot & Uncommon Green Gem Minerals
2013: Eleventh – Ruby (revised edition published in 2014)

*2016 and 2020 had no conference symposium proceedings.

The files used in the production of back issues printed prior to 2013 are unavailable. They include Topaz (2012), Diamond (2011), Feldspar (2010) and all other earlier books.

In past years, only enough books were printed for attendees of the annual event. Because a wider audience has expressed interest in obtaining back issues of the symposium proceedings, we are producing a short run of issues dating from 2014 to 2022. These eight volumes will NOT be available for purchase after June 13th, 2022.

To make the books more affordable, we are accepting pre-orders, from all, not just attendees, prior to this year's production run. No orders will be accepted after June 13th, 2022.

The next opportunity to pre-order printed volumes for 2024, and all back issues including 2023 (San Diego County Gems and Minerals), will be early March 2024 through about the second week of April 2024. (Yes, it is a small window.) Printed volumes will ship around the second week of May 2024.

The cost for all volumes available to pre-order in 2024 will be calculated on the page count for the 2024 volume and cost of paper.

As the date of the next symposium draws closer, this notice will be updated.

All orders will ship on or after May 15th, 2023. (This is the only print run for 2023.)

Yes. The books are printed on digital press by the same print manufacturer as the original print runs. The books are printed on the same paper stock, with the same beautiful vibrant colors, perfect bound, soft cover with matte coating.

Yes, we will be shipping using a selection of available carriers, depending upon availability of carrier service to the destination address. Our shopping cart will pre-populate the dropdown menu of carrier choices after you input your shipping address..

The customer is responsible for paying all out-of-pocket customs fees or applicable duties. Be aware that some destinations cities seem to be more stringent than others in levying duties.

All sales are final. We will replace defective books within 15 days of customer receipt at no charge for printing or shipping. Please send us an email at: SinkankasSupport@dpidirect.com. Please include the order number in your subject line and include pictures showing the defect.

This site requires that your browser allow "Pop-Ups" especially for the check-out process. The site provides messages for checking out and the credit card information from the secure credit card merchant as pop-ups. Please enable/allow pop-ups in your browser. This can be done at a global level or by only allowing this site to have pop-ups. You can visit the other FAQ How do I allow pop-ups? for more details. or please contact your IT company for assistance.

How to configure your web browser to allow pop-up windows?

Most web browsers include a feature to block pop-up windows. While this may eliminate unwanted or bothersome pop-up windows, the feature sometimes can impede the functionality of legitimate or useful websites.

Follow the instructions below to configure your web browser to allow pop-up windows for your selected websites.

Please note Safari is not supported therefore not recommended. Please use a different browser if possible.

Google Chrome (Windows/OS X)

Open Chrome.
Click the wrench icon on the browser toolbar.
Select Settings.
Click Show advanced settings.
In the Privacy section, click "Content settings...". The Content settings window appears.
In the Pop-ups section, click "Manage exceptions...".
Copy and paste https://shop.mutualmortgage.com into Hostname pattern field and set the behaviour to Allow.
Close any remaining dialog boxes.

Mozilla Firefox (Windows/OS X)

Open Firefox.
Select "Options..." from the Tools menu (Windows) or "Preferences..." from the Firefox menu (OS X). The Options (Windows) or variable (OS X) dialog box opens.
In the top panel of the dialog box, click on the Content icon to display the Content dialog box.
In the Content dialog box, ensure the Block pop-up windows checkbox is selected, then click the adjacent "Exceptions..." button.
Copy and paste https://shop.mutualmortgage.com into Address of website field, then click Allow. The selected webpage is added to the list of Allowed Sites.

Microsoft Internet Explorer 10/11 (Windows 7/8)

Open Internet Explorer.
From the Tools menu, select Pop-up Blocker → Pop-up Blocker Settings. The Pop-up Blocker Settings dialog box opens.
Copy and paste https://shop.mutualmortgage.com into Address of website to allow field.
Click Add. The selected website is added to the list of Allowed sites.
Click Close to close the Pop-up Blocker Settings dialog box.

Please note Safari is not supported therefore not recommended. Please use a different browser if possible.
If you must proceed with Safari and unable to submit payment, please contact us at SinkankasSupport@dpidirect.com and we will direct you to a different website that does not require the popup to process your credit card payment.

Safari 5.x/6.x/7.x (OS X)
Safari for OS X has no per-website control over blocking pop-ups windows. Pop-ups are either blocked, or they are not. To allow pop-ups:

Safari 5.x

From the Safari menu, ensure the Block pop-up windows option is not checked. Unchecking this option will allow pop-ups.
To block pop-ups once again, check Block pop-up windows in the Safari menu. You can use a keyboard shortcut: shift-[command key]-K.

Safari 6.x/7.x

From the Safari menu, choose "Preferences..." and click the Security tab.
Ensure the Block pop-up windows option is not checked. Unchecking this option will allow pop-ups.
To block pop-ups once again, check the Block pop-up windows checkbox.

This site requires that your browser allow "Pop ups", please confirm you have them enabled before attempting to check out. Once you click on "Complete Order" button you will receive a pop-up message asking you to confirm you are ready to checkout and notifying you that you will not be able to go back. Once you acknowledge that, by clicking okay, the Credit Card Transaction window will pop-up for you to enter your information.

Please log into your account. Visit Order History, towards the right of the black top navigation bar. Find the order in the list that that says "Pay Now" in green. Click on "Pay Now" and it will bring up the credit card window to try again. Please confirm that the address you entered under Billing must be an exact match to the Credit Card Statement or the payment will not process.