Foraminifera Elphidium Unisex Leather Bracelet
- Free worldwide shipping to most countries
This leather bracelet is adorned with a sliding bead inspired by the benthic foraminifera Elphidium macellum. Foraminifera are amoeboid protists. The name of this species is derived from the latin for "hole bearer" because the test is adorned with elaborate holes that the protist can stream ectoplasm out of to catch prey and drag it inside to be digested. Elphidium macellum forms a particularly intricate and beautiful test.
The Elphidium slider is created by 3D printing in wax followed by metal casting in solid copper or solid sterling silver. The slider is only lightly polished after casting to give it a rougher, more detailed appearance.
Please be aware that both copper and silver tarnish over time. If you don't like the vintage look of darkened metals, please note that it could be difficult to polish the metal slider due to its attachment to the leather band.
To determine your size, measure your wrist tightly with a measuring tape. Add 1 cm to your wrist circumference for a snug fit or 2-3 cm for a looser fit. The sizes* are as follows:
• small = 18 cm
• medium = 20 cm
• large = 22 cm
*If you need a different size, please contact me. The leather bands are not pre-cut and I can easily customize the length for you.
**the photos in this listing are computer renders and the actual colors of the bracelets may deviate slightly from the renders.**
All items are gift-wrapped in original, recycleable Ontogenie packaging. The bracelet is ready for gift giving with a gift box, polishing cloth, and care instructions.
Jewelry Shipping
(please scroll down for T-shirt shipping information)
Jewelry in stock at Ontogenie will be shipped within 1-2 days.
Delays may occur due to coronavirus-based shipping disruption.
| Australia | UPS 6-8 days | free |
| Canada | UPS 3-5 days | free |
| European Union | UPS 2-9 days | free |
| Germany | DHL 1-2 days | free |
| Hong Kong | DHL 3-5 days | free |
| Iceland | UPS 3-5 days | free |
| Japan | UPS 3-5 days | free |
| Norway | DHL 2-4 days | free |
| Singapore | UPS 3-5 days | free |
| South Africa | UPS 4-6 days | free |
| Switzerland | DHL 2-4 days | free |
| Taiwan | UPS 3-5 days | free |
| United Kingdom | UPS 3-5 days |
free |
| United States | UPS 3-5 days | free |
| 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 UPS and DHL. Your jewelry will be gift-wrapped in original Ontogenie packaging.
Please note that shipments may be delayed for reasons beyond my control. In the unlikely event that your jewelry shipment is held by your local customs office, you are responsible for paying any fees incurred.
T-Shirt Shipping
T-shirt shipping is free.
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 T-shirt shipment is delayed by your local customs office, Ontogenie is not liable for any fees incurred.
Ontogenie jewelry is 3D printed in wax and then cast in solid sterling silver, solid bronze, or solid brass plated with 14K gold. The sterling silver and bronze pieces will tarnish and discolor slightly over time. This is completely normal for these materials. Moisture, chlorine, sulfur (i.e. onions, garlic), hand sanitizers, and the oils in your skin may accelerate the tarnishing process. I recommend that you don't wear the jewelry in water, e.g., while bathing, showering or swimming. After wear, it's a good idea to polish the jewelry with a soft cloth and store it in a dark, dry place to slow the oxidation which causes tarnish.
If the jewelry should tarnish, it can be returned to its original brilliance and color by using a gentle, non-abrasive cream silver polish. I do not recommend silver wipes, baking soda or toothpaste as these can scratch the surface of mirror polished jewelry.
Highly detailed and textured pieces will be more difficult to polish because of surface variations. To polish these, I recommend using a very soft toothbrush with the cream 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 with a gentle detergent followed by a final water rinse.
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 except with a soft cloth to remove fingerprints.
All of the jewelry should be protected from impact against hard surfaces as this can cause scratching.
3D printing offers a diverse array of materials for jewelry design.
Cast metals
The cast metals are first 3D printed in wax with a high resolution printer using my design file. A plaster mold is then poured around the wax and the plaster is allowed to set. The wax is melted away, the plaster form is filled with molten metal and the metal is allowed to harden (lost wax casting). After being released from the mold, the metal piece can be polished to a shiny gloss or left unpolished.
The photo on the left shows the Mitochondrion pendant design printed in polished sterling silver, polished bronze and 14K gold plated brass.
Both silver and bronze will tarnish slightly over time. Bronze tarnishes to a warm brown and silver to a darker gray. This is completely normal for these materials. They can both be brightened with a gentle silver polish and soft cloth. The 14K gold plated brass material is a brass with a thin coating of 14K gold. Care should be taken that the plated jewelry is not exposed to friction as this could result in small areas of the plating rubbing off.
If you would prefer that your jewelry be printed in solid platinum, 14K gold, 14K rose gold, 14K white gold or 18K gold, please contact me for a nonbinding quote on the price.
Steel
In contrast to the cast metals, steel is created by 3D printing a liquid binder onto a bed of steel powder. The resulting print is infused with bronze and baked in an oven to harden.
Steel can also be plated with various metals after printing.
For more information on the chemical composition of each material, please consult the following:
Sterling Silver: 93% Silver, 4% Copper, 3% Zinc
Brass: 80% Copper, 15% Zinc, 5% Tin
Bronze: 90% Copper,10% Tin Alloy
Gold plated brass (14K electroplated gold on brass)
Steel: 60% Steel, 40% Bronze matrix material