Slate Gray Pigment
Slate Grey
Series 2
Slate is composed mainly of clay or mica, depending upon the degree of metamorphism to which it has been subjected. The original clay minerals in shale alter to micas with increasing levels of heat and pressure. Slate can also contain quartz and small amounts of feldspar, calcite, pyrite, hematite, and other minerals. Most slates are gray in color and range in a continuum of shades from light to dark gray.
Origin and History
Slate is a generic name for a metamorphosed mudstone or shale, a fine -grained rock that has developed a strong, planar cleavage in a direction suitable for the manufacture of roof tiles. The term does not denote a specific mineralogy and this is entirely dependent on the local composition of the mudstone from which it was formed. Typically, fine micas are present (and it is these planar minerals which align to promote the cleavage) with varying amounts of iron oxides, iron pyrite and elemental carbon in the form of graphite. Very fine-grained quartz is frequently present. Clay minerals may be present, but these are generally converted to mica during the processes of metamorphism. Individual grains within most slates are beyond the resolution of optical microscopes. Slates form in areas of continental crust that have undergone moderate burial and deformation during their geological history. Waste from cutting and trimming slates is an abundant by-product. According to Heaton (1928) this was ground to a powder and supplied in grades of varying fineness. Slate powder was used in the paint industry as an inert filler for the preparation of filling compounds for woodwork, machinery, etc.
Slate Black is a variant or common name for this pigment. Apparently a 'shale black containing 15% carbon' could bc made by calcining bituminous shale (Mayer, 1991).
Source
Our slate gray pigment is derived from slate deposits in France.
Permanence and Compatibility
This pigment has not been tested for lightfastness in most artist's mediums, but based upon its chemical composition it should have an equivalent lightfastness of brown ocher, umber or natural Sienna pigment. It should also be compatible with all pigments.
Oil Absorption and Grinding
The oil absorption rate of slate gray is 24 grams of linseed oil for 100 grams of pigment. Slate gray is medium grain pigment that is easily hand mulled into paint.
Toxicity
There are no acute or known chronic health hazards with the anticipated use of this product. Protect yourself against potentially known hazards by keeping it out of your body. Do this by avoiding ingestion, excessive skin contact and inhalation of sanding dusts. Conforms to ASTM D4236.
Rublev Colours Pigment: Slate Gray
| Pigment Information | |
| Color: | Gray |
| Colour Index: | PBk 19 (77017) |
| Chemical Name: | Hydrated Aluminum Silicate |
| Chemical Formula: | – |
| ASTM Lightfastness Rating | |
| Acrylic: | Not Listed |
| Oil: | Not Listed |
| Watercolor: | Not Listed |
| Properties | |
| Density: | Not Available |
| Hardness: | Not Available |
| Refractive Index: | Not Available |
| SKU | 482-11 |
|---|---|
| Brand | Rublev Colours |
| Vendor | Rublev Colours |
| Processing Time | Usually ships the next business day. |
| Color | Black |
| Pigment Type | Inorganic, Earth, Natural |
Health & Safety: There are no acute or known chronic health hazards with the anticipated use of this product (most chemicals are not thoroughly tested for chronic toxicity). Protect yourself against potentially unknown chronic hazards of this and other chemical products by avoiding ingestion, excessive skin contact, and inhaling spraying mists, sanding dust, and concentrated vapors from heating. Contact us for further information or consult the SDS for more information. Conforms to ASTM D-4236.
Order Processing
If the Processing Time for items in your order is "Usually ships within 24-48 hours", your order will usually be processed within 48 hours of receipt Monday through Friday. Orders received during weekends and holidays will be processed on the next business (working) day. Orders with longer processing times will be shipped when all items become available.
Shipping Rates
Please add your desired items and the delivery address to your basket to determine the exact shipping costs and options. The table below provides shipping rates for different weights to the countries we ship to.
Carriers
We use the following carriers to deliver orders:
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Below is an approximate guide to shipping costs for locations in Europe. Rates may change without notice.
| COUNTRY | ALPHA-2 | RATES PER PARCELS | CARRIER | |
| 0–10 kg | >10 kg–30 kg | |||
| Austria | AT | 11,50 € | 11,50 € | DPD |
| Belgium | BE | 10,95 € | 10,95 € | DPD |
| Bulgaria | BG | 20,25 € | 30,25 € | FedEx |
| Bosnia and Herzegovina | BA | 49,25 € | 49,25 € | DPD |
| Cyprus | CY | 21,80 € | 29,30 € | FedEx |
| Switzerland | CH | 25,85 € | 42,98 € | FedEx |
| Czech Republic | CZ | 12,00 € | 12,00 € | DPD |
| Germany | DE | 5,50 € | 5,50 € | DPD |
| Denmark | DK | 12,00 € | 12,00 € | DPD |
| Spain | ES | 17,48 € | 28,50 € | FedEx |
| Estonia | EE | 21,70 € | 21,70 € | DPD |
| Finland | FI | 17,48 € | 28,50 € | FedEx |
| France | FR | 14,60 € | 14,60 € | DPD |
| United Kingdom | GB | – € | – € | – |
| Greece | GR | 17,48 € | 28,50 € | FedEx |
| Croatia | HR | 29,25 € | 29,25 € | DPD |
| Hungary | HU | 15,90 € | 15,90 € | DPD |
| Ireland | IE | 17,48 € | 28,50 € | FedEx |
| Iceland | IS | 30,70 € | 62,40 € | DHL |
| Italy | IT | 15,90 € | 15,90 € | DPD |
| Liechtenstein | LI | 25,85 € | 43,00 € | FedEx |
| Lithuania | LT | 21,70 € | 21,70 € | DPD |
| Luxembourg | LU | 10,95 € | 10,95 € | DPD |
| Latvia | LV | 21,70 € | 21,70 € | DPD |
| Malta | MT | 21,80 € | 30,25 € | FedEx |
| Monaco | MC | 15,95 € | 24,30 € | FedEx |
| Netherlands | NL | 10,95 € | 10,95 € | DPD |
| Norway | NO | 25,85 € | 43,00 € | FedEx |
| Poland | PL | 14,90 € | 14,90 € | DPD |
| Portugal | PT | 15,50 € | 15,50 € | DPD |
| Romania | RO | 21,80 € | 30,25 € | FedEx |
| Serbia | RS | 49,25 € | 49,25 € | DPD |
| Slovakia | SK | 15,90 € | 15,90 € | DPD |
| Slovenia | SI | 15,90 € | 15,90 € | DPD |
| Sweden | SE | 15,90 € | 15,90 € | DPD |
| Turkey | TR | 27,30 € | 46,20 € | FedEx |
Note: Countries in RED type are not members of the European Union.
Postal Service
Shipping (EU and non-EU countries):
Up to 500 grams Tracked: 6,85 €
Up to 1000 grams Tracked: 10,45 €
Up to 2000 grams Tracked: 20,50 €
Tracking
For tracking details, please log in to your Natural Pigments account.
We track all orders where a tracked delivery service has been selected.
We will update your order with the tracking information if the shipping carrier provides a tracking number. You can locate the tracking number for your order in the shipping confirmation email you receive when your order is shipped. (Look for the email with the subject line "Natural Pigments: Shipment # xxxxxxxxx for Order # xxxxxxxxx.") You can also find the tracking number by signing into your account and visiting My Account Dashboard under Recent Orders.
VAT for Orders within the European Union
VAT is not included in prices unless specified on the website as VAT INCLUSIVE. VAT is calculated for Germany at 19% on both order subtotal and shipping cost and is added to the order grand total.
VAT, Duties, and Tariffs for Orders Outside of the European Union
VAT is not included in prices and totals unless specified on the website as VAT INCLUSIVE. Duties, tariffs, and customs broker fees are not included in the prices and totals on the website. These charges are in addition to what you will pay when ordering. These charges originate in the delivery country, so please contact your local customs for more information.
Shipping Rates
The rate charged for the shipping of your order is based on the weight of your products and your location. Before the final checkout page, you will be shown what the shipping cost will be, and you will have a chance to abandon your order if you decide not to place it.
Shipping Damage
For shipping damage, customers should file a claim with the carrier immediately. Any discrepancy, including wrong or missing items, should be reported to Natural Pigments within twenty-four (24) hours of receipt.
Back Orders
We do not accept backorders for out-of-stock items. If you order an out-of-stock item, we will email you when we expect that product to be available. You will be among the first to receive the item when it becomes available. Natural Pigments will not charge your credit card for out-of-stock items.
