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Schmincke Vault: Horadam Watercolor, Porphyry Green (2018)


You Save: $15.25 (40%)

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These special Horadam tubes were produced in 2018 for a limited edition of watercolors made from stone ground, semi-precious gemstones. Open the Product Description tab to read more about this color, or click below to browse.

Porphyry Green (2018)
Red Opalite (2018)
Lapis Lazuli (2018)
Semi-Precious Pigment Set (2018)


Green porphyry is a semi-precious stone, known for its ornamental use throughout history, including in medieval altars. It has also been used since antiquity as a pigment. When dispersed in watercolor medium, green porphyry produces a gorgeous, bluish-green color with strong granulation, a deep masstone, and light, delicate glazes when applied thinly.

We love this unique color for all kinds of natural subjects, and especially for outdoor shadow areas and complex foliage. In our studio tests, we liked it in combination with lemon yellow (the result is a multifaceted green gold) and ultramarine (which produces a range of textured turquoise shades.)

Please note that the large, dense pigment particles in this type of watercolor tend to separate from the watercolor binder. Schmincke recommends mixing the color before use, by squeezing the paint from end to end in the tube, repeating this process for about 30 seconds. If you still notice separation, don't worry; it's normal. Simply mix the pigment into the medium with a brush or palette knife.

From the Schmincke Vault:
This special Horadam tube was produced in 2018 for a limited edition of watercolors made from stone ground, semi-precious gemstones. Earlier this year, a cache of vintage stock from this edition was found in the stock of a defunct retailer, and these rare tubes made their way back to Schmincke. The Schmincke laboratory performed tests to ensure that the colors were still in excellent condition. We purchased the entire supply at a discount, so we are able to offer these colors for a very special price, 40% off the original MSRP.

5 mL tube. Made in Germany.



We ship all orders from our store in St. Louis, Missouri. 95% of orders are processed in 1-2 business days (Wednesday through Sunday). Shipping to the United States is always free for orders over $59. For orders under $59, domestic shipping rates start at $3.50. You can calculate your shipping cost in the cart or at checkout. For St. Louis residents, we also offer free curbside pickup. Just select "Pick Up" on the first page of checkout.


If there's a problem with your order, please contact our customer service team at If your order is damaged or defective, we will send you a prepaid return label and replace the item immediately. If you change your mind about an order, you can ship it back to us in new condition for a refund or exchange. However, if there is no error on our part, we cannot refund shipping charges or pay for return shipping. The deadline for all returns is 30 days from the delivery date. All clearance items, including our famous Mystery Box, are final sale.


We are an independent retailer trusted by artists since 2015, and our expert staff are happy to help you with any questions you might have about our products and services. We love helping our customers choose colors, build gift packages for friends, and get started with new tools and materials. We can also take special orders for items not listed on this site.


(314) 884-8345
9 AM to 5 PM Central Time,
Wednesday through Sunday

Schmincke Vault: Horadam Watercolor, Porphyry Green (2018)

Schmincke Vault: Horadam Watercolor, Porphyry Green (2018)