War Machine LLC has Luxor Titanium Alloy dice available over in their webshop.
From the website:
Finely machined aerospace grade Titanium alloy dice nested in a custom sliding lid oak puzzle box placed in a deluxe velvet drawstring pouch. Regardless of if you are a gamer or a collector you don’t need these dice, but if you are looking for the finest classic style exotic metal dice that you can find anywhere, Luxors are the Pinnacle. Each die starts out as a precisely CNC machined and dimensioned 16mm cube. The edges and corners have a slight radius for ergonomic as well as aesthetic appeal. Luxor dice are balanced by virtue of accurately varying the machined depth of the pips so that each face has the exact same volume of material removed. Each Luxor die is surface honed for beauty on an inspection grade granite surface plate, measured with a precision micrometer, and hand matched with a another die to ensure minimal total pair error. In addition each Luxor die pair comes with a signed specification sheet detailing their dimensions. Due to the amount of effort required to make Luxor dice they are by nature a limited run item made in small batches to ensure quality control and attention to detail. As a result a level of uniqueness is added as each die pair is individually identified by batch and number serialized on the inspection sheet. Few people will ever own a set of Luxors…be one of them while quantities are available.