Radiolaria Earrings: Spumellaria

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These earrings are based on Spumellaria, a type of Radiolaria. Radiolaria are aquatic protozoan life forms that develop a fantastically intricate silica-containing shell. The sea floor is composed of their microscopic fossilized skeletons. The Radiolarian 'Spumellaria' is defined by its elaborate sphere-within-a-sphere construction. The delicate spines on the shell are important for the buoyancy of the plankton during its lifetime, but break off when the shell is deposited in the sea bed. This design was inspired by a drawing by the German naturalist, Prof. Ernst Haeckel.

The earrings are approximately 1.6 cm (0.6 in) in diameter, including spikes, and each earrings weighs 1.5 g.

The earrings are available in solid sterling silver, bronze and 14K gold plated brass finished with sterling silver, rose gold-plated silver or gold-plated silver hooks to match.

 Jewelry Shipping

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Jewelry in stock will be shipped within 1-2 days.

Delays may occur due to coronavirus-based shipping disruption.

Australia      DHL 10-12 days 15.80 €
Canada DHL 5-8 days 15.80 €
European Union DHL 2-9 days 11.39 €
Germany DHL 1-2 days 4.99 €
Japan DHL 4-6 days 15.80 €
Norway DHL 5-7 days 17.12 €
Switzerland DHL 2-4 days 16.33 €
United Kingdom DHL 3-4 days 13.22 €
United States UPS 3 Day 15.80 €
Rest of World please contact ontogenie3d@gmail.com


You will be notified by mail when your order ships and given a tracking number so that you can follow your shipment. Ontogenie jewelry is shipped internationally from Germany via DHL and other carriers. Your jewelry will be gift-wrapped in original Ontogenie packaging.

In the unlikely event that your jewelry shipment is delayed by your local customs office, you are responsible for paying any fees incurred.

T-Shirt Shipping

T-shirt shipping costs 4 Euros.

Ontogenie T-shirts are printed in Charlotte, North Carolina, USA and Riga, Latvia in Europe. T-shirt printing requires 2-7 days fulfilment time. After fulfilment, your shipment should arrive in 3-10 business days.

In the unlikely event that your shirt shipment is delayed by your local customs office, Ontogenie is not liable for any fees incurred.

tick silver earrings

Ontogenie jewelry is 3D printed in wax and then cast in solid sterling silver, solid brass and solid bronze as well as gold-plated brass. The silver and bronze pieces, and to a lesser extent brass, will tarnish and discolor slightly over time. This is completely normal for these materials. Since moisture tends to accelerate the tarnishing process, I recommend that you don't wear the jewelry in water, e.g., while bathing, showering or swimming. The oils in your skin will also contribute to tarnishing. I recommend polishing the jewelry with a soft cloth after wear and storage in a dark, dry place to slow the oxidation which causes tarnish.

If the jewelry should tarnish, I've found that it can be returned to its original brilliance and color by using a gentle, nonabrasive silver polish. The more detailed and highly textured pieces will be more difficult to polish because of surface variations. To polish these, I recommend using a very soft toothbrush with the silver polish to allow cleaning of small crevices. After polishing, you can remove excess polish by rinsing the jewelry in water and then washing the piece in with a gentle detergent followed by a final water rinse.

xenopus frog lapel pin bronze

The gold-plated materials, however, should not be vigorously polished as the plating is likely to wear off over time. The gold-plated materials are much less susceptible to tarnishing and will probably never need to be polished.

All of the jewelry should be protected from impact against hard surfaces as this could cause scratches.