Cabinet of Curiosities

June 0813, 2019
Auction begins to close at 2:00 pm ET

Online Auction
LOT 417

Lot 417

Septarian Nodule

Septarian Nodule
Lot 417 Details
Septarian Nodule

sliced and polished
diameter 8 in — 20.3 cm

Estimate $100-$150

Realised: $228
Price Includes Buyer's Premium ?

Lot Report


Estate of Sonja Bata, Toronto


This mass formed between 50 to 70 million years ago. As the ocean receded, balls of dead sea life and mud dried and cracked. As decomposed shells seeped down into the cracks in the mud balls, calcite crystals formed. The outer thin walls of calcite then transformed into aragonite. Septarians are composed of Calcite (yellow centres), Aragonite (brown lines), and the outer grey rock is Limestone.


For condition information please contact the specialist.

LOT 417

About Condition Ratings

  • 5 Stars: Excellent - No discernable damage, flaws or imperfections
  • 4 Stars: Very Good - Minor flaws or imperfections visible only under close inspection using specialised instruments or black light
  • 3 Stars: Good - Minor flaws visible upon inspection under standard lighting
  • 2 Stars: Fair - Exhibits flaws or damage that may draw the eye under standard lighting
  • 1 Star: Poor - Flaws or damage immediately apparent under standard lighting (examples: missing components, rips, broken glass, damaged surfaces, etc.)

Note: Condition ratings and condition details are the subjective opinions of our specialists and should be used as a guide only. Waddington’s uses due care when preparing condition details, however, our staff are not professional restorers or conservators. Condition details and reports are not warranties and each lot is sold “as is” in accordance with the buyer’s terms and conditions of sale. In all cases the prospective purchaser is responsible for inspecting the property themselves prior to placing a bid.