Simbercite or Simbircite Pyrite Agate Designer Cabochon Free Shipping 44.7x51.5x8.3 mm


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Rare find — there's only 1 of these in stock.

Item details


Length: 51.5 Millimeters



Simbercite or Simbircite from the Russian city of Simbirsk is another one of those jaw-dropping gemstones that leave everyone speechless. They are beautiful, vibrant and understated. It is an agatized material that fills in chambers of the Ammonite Lamberticeras sp. with a complex mix of magnesium-rich calcite, aragonite, pyrite, marl, chabazite, and quartz. The veins of pyrite were originally the bone of the ammonite. Formed over millions and millions of years, Simbercite with pyrite is both a gemstone and fossil.

Gemstone: Simbercite

Weight: 156 ct

Size: 44.7x51.5x8.3 mm

Cut: Cabochon

Shape: Oval

Clarity: Translucent to Opaque

Origin: Russia

Enhancement: (A) - Doublet with two pieces of Simbercite

The goal of Bright Star Gemstones is to provide one-of-a-kind gemstones cut from hard to find and unique lapidary materials.

With a range of designer cabochons and colored gemstones covering the full-color spectrum plus a careful selection of shapes, matched pairs and multi-piece gemstone suites, Bright Star Gemstones sincerely hopes our love and appreciation of the lapidary arts compliments your jewelry and jewelry making talents.

Shipping & Guarantee

Free USPS Priority Mail shipping in the United States. All international orders are shipped using USPS International Priority Air Mail.

All purchases are fully guaranteed. If you are not satisfied, for any reason, please return the gemstone for a full refund. Bright Star Gemstones will even pay the cost of return shipping.

Conversion Chart

100 points = 1 carat
5 carats = 1 gram
28 grams = 1 ounce
16 ounces = 1 pound
25.4 mm = 1"

Shipping & returns

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Richard Kocurek

Richard Kocurek

Crested Butte, Colorado

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