In Inspiration, Projects, Styling

Terrazzo Coasters You Can DIY At Home

Looking for something creative and diverting to do with your lockdown hours, that results in a beautiful piece for your home? This simple, at-home jesmonite terrazzo coasters guide might just hit the spot. You can buy everything you need online, and a small project will take a morning or afternoon, with a couple of coffee breaks built-in while you wait for materials to set – perfect!

Laid kit including ready made jesmonite chips

Terrazzo jesmonite coaster workshop

£32
Kit for making small jesmonite planters

Jesmonite planter kit

£35.91
Jesmonite kit unpacked including cups, pigments and moulds

Beginner’s jesmonite kit

£35
a messy flatly of jesmonite coaster casting equipment on a blue background

DIY jesmonite coaster kit

£36
Flat lay photo of sandpaper, beeswax and a small sponge

Seal&Glow polishing set

From £2.75
Laid out jesmonite equipment including spatulas and pigment bottles

Jesmonite casting starter kit

£42.35

What are terrazzo coasters made from?

Terrazzo is simply a poured or cast material that’s full of separate chips. Sometimes those chips are marble, quartz, granite, glass or even precious metals, with cement poured over.

Can you make terrazzo coasters at home?

Yes! Rather than worrying about cement, to make easy DIY terrazzo coasters at home, we’re going to use jesmonite.

cup of coffee on a homemade jesmonite terrazzo coasters

Jesmonite terrazzo is…

  • eco-friendly
  • water-based
  • non-toxic
  • VOCs-free
  • easy to get hold of online

Now, I made my terrazzo using a handy kit from Katie Gillies. I can’t recommend Katie’s kits and video workshop enough. But the demand for these boxes is huge and unless you’re there refreshing the page on a drop day (as I was!) you’ll struggle to pick one up.

You could also try one of these kits:

Hexagon & Square Coaster Kit

£36

Round Or Square Kit

$52

Terrazzo Coaster Kit

£37

But don’t worry if you can’t get hold of a kit – you can source what you need online. So if you aren’t working from a kit, here’s everything you need.

What do you need to make homemade terrazzo coasters?

Opens silver tin of beeswax with a tree design

Beeswax tin

£9.99
Different grits of sandpaper fanned out in an arch

Wet & dry sandpaper

£6.59
Electronic kitchen scales with batteries

Digital scales

£10.99
Stack of shiny stainless steel bowls of different sizes

Stainless steel mixing bowl set

£16.49
Rolled up dust sheets on a white background

Polythene dust sheet

£8.82
A bucket of jesmonite plaster and bottle of resin liquid

Jesmonite 3.5kg kit

£37.90

Pigments

When choosing pigments, keep in mind you can make most colours from a set of basic primaries, white and black. You need tiny amounts of pigment to change the colour of your base – I recommend dipping a cocktail stick into your pigment bottle and swirling it into your jesmonite. Even drip-dropping can be too heavy-handed – especially with blue and red!

Four nude coloured pigment bottles

Neutral toned pigments

£4
Six open pots of different coloured bright flouro powder

Neon powder pigments

£12.50
Top down of open pigment bottle in antique gold colour

Gold/brown pigment

£5
Row of pigment bottles including rusty brown tones

Terracotta pigment

£11.99
Stacked pyramid of small pigment bottles with black labels

Fifteen mini pigment set

£30
Six small bottles of pigments including primary colours, white and black

Six pigment kit

£14.60
two terrazzo coasters in peach with mustard and salmon coloured flecks

Preparing to make your homemade terrazzo coasters

Clear a workspace. You’ll need plenty of space – a dining table is ideal. Ensure you wear old clothes and carefully cover your work surface with the plastic sheeting. Jesmonite mixture does wash out, but spilled pigment is difficult to remove – so work carefully!

How to make your homemade DIY terrazzo coasters

1. Decide on your colour scheme and design

When making terrazzo, we start with the chips first, so you’ll want to know what colour your base (or background) will be so that you can ensure you have enough contrast. Then decide how many different colours you want in your chips – it could be just one, or it could be a dozen. If in doubt, use a white or black base the first time you work with terrazzo – any colour chips will look great with these.

2. Now make the chips to fill your terrazzo design

For each different colour chip, measure out 25g powder and 10g of liquid. This is the magic ratio of jesmonite terrazzo chips – 2.5 parts dry to 1 part wet. Mix quickly with a wooden stirrer until smooth.

Psst! You can skip all these ‘chip’ steps by ordering ready-made chips in your choice of colour scheme. It saves a lot of time – and the messiest parts of the process. Unless you love the mess, in which case, read on!

wintry toned foil pieces in pot

Winter-inspired mixed foil

£2.75
Bright spring inspired foil pieces

Spring-inspired mixed foil

£2.75
Gold foil pieces next to pot

Gold foil flakes

£2.75
Small pot with shiny copper colours flakes

Copper foil flakes

£2.75
three small piles of powdered jesmonite

Bright crushed jesmonite

£5.70
Three piles of different colours quartz and crushed shell

Crushed natural aggregates

£6
Scattered pile of neutral coloured jesmonite fragments

Nude jesmonite chips

£4.50
Three piles of vibrant pink and green jesmonite chips

Terrazzo chips jungle & flamingo

£4.70
Four piles of small jesmonite chips

Terrazzo chips coral & willow

£4.70

3. Add your pigment

Start small! Pigments are very strong. I suggest dipping a cocktail stick into your pigment, then adding that to your jesmonite. You’ll be surprised how quickly it builds up. The more pigment you use, the stronger your colour will be. Experiment – this is the really fun part!

pigmented navy jesmonite for terrazzo coasters

3. Spread the mixture out thinly

Once you’re happy with your colour, spread the chip mixture out onto your plastic sheeting – use the side of a lolly stick to keep it thin, smooth and even.

pigmented jesmonite spreading on a mat

4. Repeat steps 2 – 4 with all other coloured chips you want

You can mix pigments to create deeper, more interesting colours. But be careful not to add so much liquid pigment that you change the ratio of wet-to-dry ingredients. Too much pigment will make it harder for the terrazzo to set properly.

flecks of jesmonite

5. Leave for 10 minutes to set

Once ready, the surface will be matte and the texture brittle. Give it a test break – if it doesn’t snap cleanly, leave it a few more minutes.

6. Crush your chips!

Break up the thin terrazzo shards with your hands – the finer you crush them, the smaller your coloured pieces will be. Keep the shards to one side while we make the base.

four cups from the top of different colours terrazzo chips

7. Mix up your base

Use 300g of powder and 120g liquid (the ratio here is a little dryer as we want our coaster base to be less brittle than the chips).

8. Add in your chips and stir well

Don’t take too long over this stage as your jesmonite will already start to set

base jesmonite mix with chips mixed in

9. Pour your combined mixture into your moulds

Level off with a lolly stick and leave for 30 minutes to an hour. Your moulds might get slightly warm as jesmonite setting is an exothermic reaction, but it won’t get hot

homemade jemsonite terrazzo coasters setting in moulds

9. Once set, gently ease your coasters from their moulds

Don’t panic if they don’t look like much yet! You probably won’t be able to see many chips, but we’re going to sand away the excess to reveal the magic…

turned out terrazzo coasters ready to be sanded

10. Wet your coaster and sand

Start with a course grit sandpaper and move gradually finer until you’re buffing the surface smooth. Sand until you reveal the desired amount of chips. The next shot shows one coaster before sanding and one after – see how much of the chips is revealed below a millimetre of base mixture?

one sanded coaster and one unsanded coaster showing the difference

11. Seal with beeswax

Add a dab of beeswax or other clear-finish sealant and rub into the surface of your coasters to finish them.

finished terrazzo coasters sealed with beeswax

Voila! You made your own beautiful terrazzo coasters.

What next?

Want to try making something more adventurous from your jesmonite terrazzo mixture? Why not try one of these moulds for your next project…

Tray mould for creating 3D bubble cube

Bubble cube mould

£12.99
Assorted moulds for modern abstract candle designs

Geometric assorted moulds

£19.82
Female nude body shaped candles

Venus body mould

£9.72
Tray with 12 zodiac inspired pendant mould designs

Zodiac sign mould

£3.99
Small cloud shaped mould

Cloud mould

£5.99
Round silicone tray mould with mystical moon face design

Moon face moulds

£19.50
Display of different shaped moulds for simple trays and holders

Assorted tray and holder moulds

£14.99
Pointed plain see-through pyramid shaped mould

Pyramid mould

£16.99
Pink silicone mould in 3D geometric heart shape

Geometric heart mould

£9.99
Assorted plain and fluted geometric column moulds

Roman column moulds

£10.63
Silicone pill-shaped see-through tray

Oval tray mould

£14.95
box with 4 round silicone moulds

Silicone coaster mould

£17.99
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3 Comments

  1. Sailaja
    3 months ago

    Really good to know more about jesmonite

    Reply
    1. this1870house
      2 months ago

      thanks for reading! 🙂

      Reply

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