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106 grams
Oracle-Black (4-6 mm)
122.55 €/kg

12.99€
incl. 19% VAT
plus shipping and handling
Add to Cart:

This price includes a 5% discount . This bundle weighs approximately 106 grams (+/- 1 gram). Each rod is approximately 30 cm long.

Below you will find a table describing the product you will receive:

Double Helix Colour Name Oracle-Black
Price per Kilogram (incl. 19% VAT) 122.55 €/kg
Rods per 106 gram (Approximate) 5-6 rods
Price per 106 gram (incl. 19% VAT) 12.99 €
Diameter of Rods (Approximate) 4-6 mm
COE (Coefficient of Expansion) approx. 104 x 10-7


Description from Double Helix:
Oracle-Black made in typical Double Helix fashion; with unconventional approaches to glass chemistry using low toxicity ingredients. Oracle-Black has smooth working characteristics, reads “darker” than some existing black glasses, does not spread excessively, and can be worked very hot without boiling. It is made in USA without Antimony, Arsenic, Cadmium, Chromium, Lead, Nickel, or Selenium. Rods are dark blue but strike to black during the annealing cycle. Stays neutral with striking colors but reacts to luster colors.
For maximum opacity, particularly in thin applications, briefly cool the bead then lightly flame strike (30 seconds) before annealing for 2 hours or more at 950F.
The Oracle project is an extension of what we’ve already done with Aether, Zephyr and Rhea; create low-toxicity, essential glass colors for the flame. We will be producing colors free from antimony, arsenic, cadmium, chromium, lead and selenium. Oracle-Black, Oracle-White (coming in 2018), Rhea, and Zephyr give 104 flame workers the option to use responsibly manufactured, low toxicity glasses in their work.

This glass is excellent for glass bead making and other types of glass lampworking, and is compatible with other glass rods that have a coefficient of expansion of "104".


  • Model: DH Oracle-Black 5mm 106g
  • Shipping Weight: 0.106kg
  • 2 Units in Stock
  • Manufactured by: Double Helix


This product was added to our catalog on Thursday 31 December, 2020.

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