Thunderflash,
in Los Angeles.

Green energy. Thunderflash is the quartzite that walks into a room and refuses to be background — a seafoam-green field cut by diagonal strikes of garnet, copper, and oxidized red. Antolini's June feature, and the stone our designers reach for when a space is meant to leave a lasting impression.

Antolini Thunderflash green quartzite slab, 2cm polished, with sweeping diagonal garnet and copper veining across a pale seafoam-green field, hanging from a crane at the Royal Stone Los Angeles yard

Antolini Thunderflash — Polished

On Thunderflash

Stone of the Month · June 2026

A fully natural Brazilian quartzite, hand-selected through Antolini in Verona before it crosses the Atlantic to the Royal Stone yard.

With its dramatic veining and vibrant contrasts, Thunderflash gives an interior a strong, magnetic presence. The pale jade ground keeps the slab light and architectural, while the lightning-strike veining carries real chroma even in low-light rooms — a rare combination of restraint and drama in a single stone.

Polished lights the red veining and deepens the green for feature walls, islands, and backlit moments; honed quiets the surface to a soft matte read for counters and vanities. Performance, porosity and sealing requirements vary by the individual stone, quarry and finish.

It pairs with unlacquered brass, warm walnut and rift oak, and plaster in clay or bone — and it bookmatches beautifully, where the veining can mirror across a seam on a fireplace, island end-cap, or vanity. We’ll pull a slab and walk it with you in daylight before you commit a face.

Antolini

Curated By

2cm

Standard Gauge

Feature

Application

Thunderflash · In the Yard

Thunderflash,
currently on the floor.

Thunderflash lots in stock now at 2303 South Sepulveda — polished and honed. Tap any slab for the full study.

Showing 4 of 4 slabs

Visit the Yard

Walk a Thunderflash slab
in natural light.

Slabs are one-of-one. We’d rather pull the piece for you to see than describe it from a photograph. Designers and private clients are welcome by appointment.