This faux lapis lazuli panel was completed for a specific client. Lapis lazuli is a deep blue semi-precious stone (not a marble). Most lapis lazuli contains calcite (white), sodalite (blue), and pyrite (metallic yellow). Since the stones do not come in boulder sizes (the largest sizes rarely exceed 12 sq. ft.), a larger panel like this needs to be broken up into sections.
In this tutorial, I will demonstrate the step-by step of the center square of this lapis lazuli.
With a 2-headed, pointed marbling brush, a very minimal background is created with a bright, yellow ochre to mimic the bright golden flakes encrusted in the lapis. This is a guideline for the entire composition.
Once dry, a slightly tinted blue, slick coat is applied to the entire surface. With a 2-headed, flat badger brush, add an overall texture of a blue glaze (using a mixture of Proceed ultramarine blue, black and pthalo Blue), leaving about 25% uncovered.
Switch to a samina chiqueteur and chiqueteur or “sponge off” to further soften and change the texture using a simply damp brush.
Deep “white” areas are created by removing glaze in a jagged, worm-like shape. Here, a small, 2-headed pointed brush was used on its side to create this effect. Soften the entire section with a softener (round or square)
Finally, using a 2 headed, flat squirrel brush, dipped in alcohol and on its tip, add some dark areas (black, raw umber, ultramarine blue). Soften and let dry. Step 2 is complete.
Once dry, glaze on a transparent, ultramarine blue and a dash of pthalo blue to give it that extra pop, and break up the glaze with a chiqueteur (we like the samina chiqueteur for small projects like this)
Continue making finer network of veins, connecting the larger fissures, with a small but long veiner.
The square is finished. Let dry very well and reverse the tape to complete the other areas.