Slate Monolith SM39 is an impressive garden obelisk for a small garden design. From above its triangular in shape, giving the faces unusual angles. With careful placement related to the sun’s position, this could offer some beautiful light and shadow throughout the day.

Reservoir accessories & lighting available in the basket.


1 in stock

Dimensions260 × 200 × 400 mm

Black, Blue, Grey, Plum


35mm (water flow)


Welsh Slate

Our blog contains an extensive guide for how to install a water feature.

Includes a detailed step by step and the recommended accessory products.

Installation Guide

FREE SHIPPING to standard UK postcodes.

Contact for remote area and international shipping quotes.

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Delivery is usually within 5 working days, although we can hold stock for short amounts of time (birthday gifts, as one example – buy now and arrange a later delivery). 

Ioan aims to deliver most large pieces in person, although we do use a trusted & insured courier for smaller items, some exceptions and hard to reach locations.

Standard consumer rights apply, although we should highlight that in over 7 years in business we are yet to have one single product returned.

Delivery & Returns Info

Lighting and Accessory Packs are available in the Basket when purchasing ANY stone water feature.

Accessories for Welsh Slate Water Features


Small and shapely Slate Monolith SM39, the photograph shows the monolith when wet and this will dry slightly lighter.  Delivery can be arranged with our courier, alternatively this can be collected from the workshop, strictly by appointment only. Small Slate Monoliths of this size and shape are very tough to find and very desirable in UK patio designs. This small triangular block is perfect for a small garden design, such as a city home, new build or townhouse. Many customers use this type and size of stone in Zen Garden themes. With the addition of our Small Reservoir Pack, available in the basket, this block is transformed into a beautiful water feature, enhancing the sensory experience in any garden.