Our Work
Great stones are made in quarries. Ninety Degree Stone excavates, cuts and finishes rare natural stone with R.K. Group behind the Kishangarh studio.
Great stones are made in quarries
The birthplace of a stone defines its destiny. Our quarries mine from a depth of 500m, excavate the choicest blocks from the mountains and accelerate their journey. Currently, our quarry at Luc Yen is the biggest source named on the original public page.
Cutting-edge technology
From excavation to final polish, every step of curating stones at Ninety Degree Stone uses machinery sourced from builders around the world. The line is meant to keep environmental impact in check while the finish stays true to the block.
The R.K. Marble label
Holding a pioneering position in marbles for decades, the R.K. Group has carried that expertise into the niche of rare natural stones. That lineage is the testimony behind Ninety Degree Stone.
Technology, quality, advantage and growth
Ninety Degree Stone is backed by expansion: access to technology, global markets and international orders. The Kishangarh studio starts from that note of innovation in style and finish.
Our bestseller
While every stone is unique, the piece of pride named on the original page is Ocean Black — a premium stone that geologically evolves over 500–800 years and is mined in India. See the Ocean Black collection for published slabs.
From quarry to finish
Published projects
Project and quarry records will appear here after editorial review. None are published yet, and none are invented.