Manufactured Surface Comparison
Compare Quartz and Porcelain as the two buyer-facing manufactured-surface categories on The Stone Index. Zero- and ultra-low-silica products stay inside Quartz inventory and are identified by their product-specific silica claims.
| Factor | Quartz | Porcelain / Sintered Stone | Low-Silica Quartz |
|---|---|---|---|
| How TSI classifies it | Separate manufactured-surface category. | Porcelain and Sintered Stone remain separate listing labels but share a buyer landing page. | A product subset within Quartz inventory, identified by a zero- or ultra-low-crystalline-silica claim. |
| General material basis | Manufactured slab category traditionally associated with mineral or quartz aggregate and binders. Exact formulation varies by brand. | Porcelain slabs are ceramic products fired at high temperature. Sintered-stone formulations and processes vary by manufacturer. | Still grouped as Quartz for shopping and inventory. Exact formulation varies by manufacturer and product line. |
| Silica claims | Do not assume one silica percentage across every quartz product. | Use the product SDS and fabrication guidance for the exact slab. | Zero and ultra-low silica are product-specific claims, not a guarantee for every Quartz slab. |
| What to verify before fabrication | Brand, thickness, slab size, edge requirements, warranty and fabrication instructions. | Thickness, panel handling, cutouts, edge design, tooling and installer experience with the exact product. | Exact silica claim, current SDS, product line, thickness, approved uses and fabrication instructions. |
| Current TSI listings | 97 active full-slab listings | 7 active porcelain/sintered full-slab listings | 21 active low-silica Quartz listings |
| Current listed price range | $250–$1,927 | $600–$975 | $650–$1,927 |
Inventory figures are live marketplace data and change as sellers add, sell or update listings. 13 current low-silica Quartz listings require quantity confirmation and are not treated as confirmed piece counts.
Quartz is still a familiar shopping term, but product composition can differ across brands and generations. Compare the exact product rather than assuming every slab labeled Quartz has an identical formulation.
These are kept as separate listing labels. They share a buyer page because large-format porcelain and sintered surfaces are often evaluated for similar countertop and wall projects, not because they are technically identical.
Zero- and ultra-low-silica products remain inside the Quartz shopping category. Their silica content is a separate product attribute, so buyers and fabricators should verify the current technical documentation for the exact slab.
97 active listings · 1,332 confirmed pieces · 6 sellers
Grecian quartz clearance slabs — 15 available at $250 each, polished 2 cm, with a soft neutral white and gray stone-inspired look.
127" x 64"
56.4 sq ft
$250
15 pieces available
Dream Catcher quartz clearance slabs — 4 available, polished 2 cm, with a warm terrazzo-inspired look for kitchens, vanities, and bars.
127" x 64"
56.4 sq ft
$395
4 pieces available
Grey Concrete quartz clearance slabs — 27 available, matte 2 cm, with a modern concrete-inspired look for kitchens and larger projects.
126" x 63"
55.1 sq ft
$475
27 pieces available
Alabaster quartz clearance slabs — 3 available, polished 2 cm, with a soft white low-contrast look for kitchens, vanities, and smaller projects.
127" x 64"
56.4 sq ft
$425
3 pieces available
Kalahari quartz clearance slabs — 17 available at $425 each, polished 2 cm, with a soft white low-contrast look for kitchens and multi-slab projects.
127" x 64"
56.4 sq ft
$425
17 pieces available
Capri quartz clearance slabs — 6 available at $425 each, polished 2 cm, with soft beige-gray veining for kitchens and coordinated projects.
127" x 64"
56.4 sq ft
$425
6 pieces available
7 active listings · 165 confirmed pieces · 2 sellers
Clearance Port Laurent Sintered Stone — 14 book-matched 20 mm slabs at $900 each.
128" x 64"
56.9 sq ft
$900
14 pieces available
Clearance Calacatta Light Porcelain — 44 book-matched polished 12 mm slabs at $775 each.
127" x 64"
56.4 sq ft
$775
44 pieces available
Clearance Calacatta Royal Porcelain — 44 book-matched polished 12 mm slabs at $975 each.
127" x 64"
56.4 sq ft
$975
44 pieces available
Clearance Super White Porcelain — 14 book-matched polished 12 mm slabs at $775 each.
127" x 64"
56.4 sq ft
$775
14 pieces available
Clearance Calacatta Venato Porcelain — 18 book-matched polished 12 mm slabs at $775 each.
127" x 64"
56.4 sq ft
$775
18 pieces available
This porcelain masterpiece mirrors the luxurious allure of natural Calacatta Gold marble
127" x 64"
56.4 sq ft
$847
24 pieces available
21 active listings · 239 confirmed pieces · 2 sellers
Nouvel Arabescato Marina — Ultra-Low Crystalline Silica Quartz. Message Bedrosians Sylmar for current availability.
138" x 79"
75.7 sq ft
Price on request
100 pieces available
Montage by Pure Surfaces — 46 Zero Crystalline Silica matching slabs for countertops, islands, shower walls, vanities, and large multi-room projects.
127" x 64"
56.4 sq ft
$825
46 pieces available
Riviera zero-silica countertop surface clearance slabs — 19 available, polished 2 cm, ideal for kitchens and larger multi-slab projects.
127" x 64"
56.4 sq ft
$760
19 pieces available
Sanibel zero-silica countertop surface clearance slabs — 26 available, polished 2 cm, ideal for kitchens and large multi-slab projects.
127" x 64"
56.4 sq ft
$760
26 pieces available
Marbella zero-silica countertop surface clearance slabs — 31 available, polished 2 cm, ideal for kitchens and large multi-slab projects.
127" x 64"
56.4 sq ft
$760
31 pieces available
126" x 63"
55.1 sq ft
Price on request
Quantity to confirm
No. Quartz is a manufactured countertop-surface category, while porcelain is a fired ceramic slab category. The Stone Index keeps them as separate buyer-facing material categories.
No. Crystalline silica content varies by manufacturer and product. Zero- and ultra-low-silica products are treated as a subset of Quartz inventory and should be verified against the current technical documentation for the exact product.
No. The Stone Index preserves Porcelain and Sintered Stone as separate listing labels. They are often compared together because both are large-format manufactured slab options used for many of the same countertop and wall projects.
There is no single answer for every project. The right choice depends on the exact product, design, thickness, edge requirements, fabrication capability, intended use, budget and current local availability.
Some sellers publish an active product without a verified current piece count. Those listings stay visible but are marked for quantity confirmation instead of being counted as confirmed inventory.