Imperial Blue Riverwash

Stoneza — Anantay Exports Pvt. Ltd. — is a quarry-direct manufacturer, processor and exporter of Kota limestone, operating from Bhilwara, Rajasthan since 1992. We operate quarries at Bijolia, Kota and Asind alongside verified direct quarry networks across India, processing and calibrating every order through our in-house factories in Bhilwara with zero middle trader markups. We supply pan-India and export worldwide.

Send the quantity, the finish and thickness you need, and the delivery location. We come back with a firm quarry-direct quotation and a confirmed lead time. Thickness and finish options are confirmed at quotation stage. Because we quarry and process ourselves, the quotation comes from the works rather than through a trader — and we would rather quote against a real drawing than hand you an indicative range that changes later.

Kota Blue is the quarry and trade name; Imperial Blue is our name for it. The spec code is STZ-FO-IMPE-RIVE. Quote the spec code on a BOQ rather than either name — the same stone is sold under several names across India, which is exactly how substitution happens on site after a specification is approved.

A water-eroded surface with soft undulation across the face. Real grip wet, and the most forgiving finish in the range — it hides scratches, foot traffic and the occasional chip better than anything else we make. The surface is eroded with high-pressure water rather than cut or blasted, taking the softer minerals back and leaving the harder ones proud. Closer to what a riverbed does to stone over years. Wet grip: high — suits wet areas. Grip when wet, and low-absorption stone does not blotch and darken the way a porous one does.

Sweep and damp-mop. The texture holds slightly more dust in the hollows and hides it completely. Effectively impossible to scratch visibly.

Size: 22"×22" | 46"×22" | 2'×2' | 4'×2' | 3'×3' | 4'×4'. Thickness: 20 MM calibrated. Supplied machine cut / box pack at approximately 4.5 kg per sq ft. Custom sizing is available on project orders — send the setting-out and we will cut to it.

Yes. At 0.5-1.5% water absorption and 2600 kg/m³ density it is exterior grade. At under 1% absorption it needs no sealer and handles monsoon and wet areas without difficulty.

Yes. We export worldwide from Bhilwara with container loading, export packing and documentation handled in-house. Minimum order is project-based rather than a fixed count. For bulk and wholesale enquiries, container quantities and repeat programmes, send the schedule and we will quote FOB or CIF against it.

Yes, and we would rather you did. Ask for a wet sample as well as a dry one — every stone darkens when wet, some dramatically, and it is the one thing a photograph cannot show you.

Imperial Blue is kota limestone. Measured: water absorption 0.5-1.5% (low), density 2600 kg/m³, weight ~85-110 kg/sq m laid. At 0.5-1.5% (low) this is a low-absorption stone, which is why it needs no sealing and performs well in wet areas and through a monsoon.

Impregnating sealer recommended Use a breathable impregnating sealer, never a film-forming one. A film traps moisture inside the stone, and in Indian conditions it eventually clouds and lifts, at which point it has to be stripped. An impregnating sealer sits in the pores and lets the stone dry out. Reapply at the manufacturer’s interval, typically every few years on an exposed elevation and less often on a sheltered one.