Golden Ratio Math Necklace by Ontogenie Science Jewelry in 14K gold plated brass
Golden Ratio Math Necklace by Ontogenie Science Jewelry in 14K gold plated brass
Golden Ratio Math Necklace by Ontogenie Science Jewelry in 14K gold plated brass
Golden Ratio Math Necklace by Ontogenie Science Jewelry in sterling silver
Golden Ratio Math Necklace by Ontogenie Science Jewelry in 14K gold plated brass
Golden Ratio Math Necklace by Ontogenie Science Jewelry in 14K gold plated brass

Golden Spiral Pendant - Math Jewelry

Regular price$148.00
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Material

This necklace is inspired by the golden spiral. The golden spiral is a logarithmic spiral whose growth factor is the golden ratio, a mathematical constant.  The golden ratio, designated by the Greek letter "phi," equals 1.618 and represents the ratio of a line cut into two segments of different lengths such that the ratio of the whole segment to that of the longer segment is equal to the ratio of the longer segment to the shorter segment. The golden spiral approximates a fibonacci spiral, but only at later turns.

There are many examples in nature of organisms that display the golden spiral in their design, for example, spiraled seashells and snail shells, galaxies, hurricanes, pine cones, sunflower seed heads, and petal placement in many flowers. To honor its importance in nature, the Ontogenie golden spiral pendant is adorned with arches that represent the inner walls of a seashell.

The Golden Spiral pendant is 2 cm (0.8 in) wide and 3 cm (1.2 in)  long below the loop.

The pendant is 3D printed in solid sterling silver or 14K gold plated brass, finished with a 45 cm/18 inch long sterling silver or gold plated silver chain*, and is ready for gift giving with a gift box, polishing cloth, and care instructions. 

*While a 45 cm/18 inch fits most, other chain lengths are available. At checkout, write a note indicating your preference.


All orders totaling over 50 Euros ship free. Orders under 50 Euros cost 5.50 Euros for shipping.

If you live outside of the EU, you may be charged import fees on your order by your local customs authority.

**Orders to the United Kingdom of more than 135 GBP/158 Euro will incur import duties that must be paid by the customer at the time of receipt of the package in the UK. If you do not pay the import duties, the jewelry will be destroyed or returned, and your order will not be refunded.**

T-shirts, mugs, hoodies and art prints typically ship within 2-7 days from a printing company near you. After fulfilment, your shipment should arrive in 3-10 business days. Shipping is free.

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