KG Mimarlık designed the Kumport Headquarters project in Ambarlı, İstanbul, delivered in 2016. Commercial interiors like this one are useful references precisely because the stone has to survive years of foot traffic without a maintenance budget to match a private home. To be clear: this is not a DIJA project, and we did not supply the material — it is included here purely as a documented reference.
The archive credits the architect and the build, but stops short of naming the specific stones used — not unusual for a project this size.
For basalt - quarry: ankara, in the absence of a documented stone type, a reasonable regional equivalent from our range is Black Galaxy Granite.
The original project write-up, with full photography and credits, is linked below — we do not reproduce it here, only the facts.