Three surfaces, one confident debut
Congratulations are in order. Classic Marble Company Private Limited, the company behind the KalingaStone brand, released its first Environmental Product Declarations in November 2026. All three are valid into September 2031. That gives the sales team close to five years of runway before anyone needs to think about renewal.
The set is small but well chosen. Together the three EPDs cover each of the company's core material technologies:
- Engineered Quartz: resin-bound slab with an unsaturated polyester matrix, fine and coarse quartz aggregate, pigments and a silver-ion antimicrobial additive, made by vacuum vibrocompression.
- Resin Terrazzo: polyester resin matrix with calcium carbonate filler and marble chips, also made by vacuum vibrocompression.
- Cement Terrazzo: Portland-cement matrix with calcium carbonate filler and marble chips, made by wet vibrocompaction.
Each EPD reads as a declaration for a whole material family rather than for a single SKU or colour. That's a practical choice for a brand with a large colour range. A specifier choosing one quartz design can usually point to the same quartz declaration. The EC3 listing doesn't name the program operator, the PCR or the LCA consultant behind these EPDs. Buyers who need that detail for project documentation will find it in the EPD documents themselves.
Who KalingaStone builds for
KalingaStone launched in 2009. The company describes its Mumbai operation as India's first composite marble plant, and the range now covers engineered marble, quartz and terrazzo. Its slabs go into kitchen countertops, bathroom vanities, flooring and wall cladding for homeowners, interior designers, dealers and commercial projects in India and abroad.
That mix of applications matters. Countertops, floors and cladding cover large areas on hospitality, office and residential projects. Those are the jobs where whole-building carbon calculations and green building rating systems ask what's in the materials and where the impacts come from.
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Why engineered surfaces now need numbers
Picture a design team running a whole-building life cycle assessment. When a surface has no product-specific EPD, the team has to use a generic dataset. These are often deliberately conservative and sometimes carry an extra uplift on top. The product with no data ends up looking worse on paper, whatever its real performance.
With a third-party verified EPD, a product competes on its own measured impacts and not on a worst-case estimate. Under LEED v5, which rewards declared and lower embodied carbon materials, that can decide whether a slab stays in the specification or gets swapped out late in design. One win on a mid-sized project can recover the cost of the EPD work. Manufacturers rarely see the bids they quietly lose for lack of data, which makes this easy to underestimate.
How the competitive field stacks up
The global engineered surfaces leaders have had EPDs for some time. Caesarstone has five current EPDs with EPD International, including a declaration for its Icon surface collection published in August 2026. Cosentino has 18 current EPDs for Dekton and Silestone under INIES. A separate Cosentino S.A. listing holds seven Silestone declarations, all of which expire in January 2027.
Compac is the closest like-for-like comparison. Its EPDs cover both Quartz and Terrazzo, published with EPD International, and they run out during 2027. Quarella holds two current EPDs for marble-based and quartz-based agglomerates. On cement terrazzo, the only comparable declaration we found was Agglotech's terrazzo slab EPD, which expires in September 2027. So KalingaStone is joining a field the majors already occupy, and its declarations will outlast several of theirs.
At home the picture flips. We found no EPDs in EC3 for Pokarna, the Indian producer behind the Quantra quartz brand, or for Global Surfaces. In export bids where Indian-made quartz goes head to head, KalingaStone is currently the one with verified data. That's a real edge in a competitve export market, and it lasts until domestic rivals publish their own.
Making the declarations easy to find
At the time of writing we couldn't find the new EPDs on kalingastone.com. The site has several blog posts about responsible production, water recycling and energy-efficient machinery, but no downloadable declarations and no dedicated sustainability or certifications page that lists them.
That's an easy fix with a quick payoff. Architects and dealers checking documentation often go straight to the manufacturer's website. If a verified EPD doesn't show up there, many will assume it doesn't exist. A simple sustainability page with all three PDFs, linked from each product family page, would make the investment pay off far faster.
From verified to visible
One detail stands out. The declarations are valid until late September 2031, which suggests they were verified some weeks before they appeared in the directory in November. A gap of weeks or even months between issuance by a program operator and listing in the global databases that specifiers search is common. During that gap, an EPD can't win projects because nobody can find it.
Shortening that delay is one of the easiest gains on any future EPD release. Readers who want to know how new declarations can be listed within a day or two of publication are welcome to contact the author directly.
KalingaStone steps into the transparency arena
With one declaration each for quartz, resin terrazzo and cement terrazzo, KalingaStone now has data behind all three of its core technologies. That brings it level with Caesarstone, Cosentino and Compac on the questions specifiers ask, and ahead of Indian peers like Pokarna that haven't published yet. The sensible next steps are to put the documents on the website, brief the dealer network, and think about colour-specific or thickness-specific declarations where big projects ask for them.
