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Calcite Geode — auction comparables · Snaplot Comparables
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Comparables
170
Median
£19
Suggested estimate
£10 – £30
25–75% range
£10 – £46
Overall range
£3 – £1,470
Distribution
£5
£40
£80
£115
£150
Sell-through
99%
of lots sold
0%
at premier salerooms
Trend
↘ falling -100% over 8y
Median from
60
sold in the last 36 months
·
hammer prices, excl. buyer's premium — fair-market auction value (retail/insurance replacement runs higher)
239
comparables for
“Calcite Geode”
· page 3 of 10
Cite comps
CSV
likekindnessfoundation
· Aug 2025
Double geode, quartz plate, celestite, aragonite (UV reactive), optical calcite, apophyllite.
US$24
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likekindnessfoundation
· Aug 2025
Double geode, quartz plate, celestite, aragonite (UV reactive), optical calcite, apophyllite.
US$24
Wine & Spirits
· Aug 2025
Geode with Agate and Dogtooth Calcite Slice with Metal Display Stand
US$162
est
US$65
–
—
· Aug 2025
Geode with Agate and Dogtooth Calcite Slice with Metal Display Stand
US$162
est
US$65
–
—
Ethnographical
· Jul 2025
Geode with Agate and Dogtooth Calcite Slice with Metal Display Stand
US$110
est
US$100
–
—
· Jul 2025
Geode with Agate and Dogtooth Calcite Slice with Metal Display Stand
US$110
est
US$100
–
—
Ethnographical
· Oct 2017
Very fine Amethyst geode with Calcite - Dark purple - 320 x 240...
€18,700
est
€18,700
–
—
· Oct 2017
Very fine Amethyst geode with Calcite - Dark purple - 320 x 240...
€18,700
est
€18,700
–
—
Miscellaneous
· Apr 2017
Natural Amethyst geode with large calcite crystals - 18.5 x 9.8 x
€8,000
est
€8,000
–
—
· Apr 2017
Natural Amethyst geode with large calcite crystals - 18.5 x 9.8 x
€8,000
est
€8,000
–
—
Miscellaneous
likekindnessfoundation
· Aug 2025
Petrified wood, pyrite on quartz, red calcite, amethyst flower, geode, sand dollar fossil. Stands
US$27
likekindnessfoundation
· Aug 2025
Petrified wood, pyrite on quartz, red calcite, amethyst flower, geode, sand dollar fossil. Stands
US$27
Natural History
· Nov 2017
Conical Calcite on Quartz semi geode - 13 x 10 cm - 715 gm
€3,500
est
€3,500
–
—
· Nov 2017
Conical Calcite on Quartz semi geode - 13 x 10 cm - 715 gm
€3,500
est
€3,500
–
—
Miscellaneous
· Mar 2017
Natural Amethyst geode with large calcite crystals - 14,5 x 10 x 7,8
€6,500
est
€6,500
–
—
· Mar 2017
Natural Amethyst geode with large calcite crystals - 14,5 x 10 x 7,8
€6,500
est
€6,500
–
—
Jewellery & Gems
likekindnessfoundation
· Aug 2025
Titanium plated quartz (man made), malachite, titanium geode (man made), druzy, cave calcite,
US$26
likekindnessfoundation
· Aug 2025
Titanium plated quartz (man made), malachite, titanium geode (man made), druzy, cave calcite,
US$26
Wine & Spirits
· Nov 2017
Septaria geode with siderite and calcite - 8 to 10 cm - 1385 g (3)
€2,000
est
€2,000
–
—
· Nov 2017
Septaria geode with siderite and calcite - 8 to 10 cm - 1385 g (3)
€2,000
est
€2,000
–
—
Miscellaneous
· Nov 2017
Very large Amethyst geode with calcite - 210 x 200 x 170 mm - 7500 g
€7,200
est
€7,200
–
—
· Nov 2017
Very large Amethyst geode with calcite - 210 x 200 x 170 mm - 7500 g
€7,200
est
€7,200
–
—
Miscellaneous
· Nov 2017
Very large Amethyst geode with calcite - 450 x 235 x 165 mm - 21.30 kg
€30,000
est
€30,000
–
—
· Nov 2017
Very large Amethyst geode with calcite - 450 x 235 x 165 mm - 21.30 kg
€30,000
est
€30,000
–
—
Miscellaneous
· Oct 2017
Superb calcite crystal cluster on quartz semi-geode - 18 x 12 cm - 1214 gm
€7,500
est
€7,500
–
—
· Oct 2017
Superb calcite crystal cluster on quartz semi-geode - 18 x 12 cm - 1214 gm
€7,500
est
€7,500
–
—
Miscellaneous
· Oct 2017
Large Premium Amethyst geode with Calcite - 360 x 230 x 190 mm - 14.3 kg
€16,000
est
€16,000
–
—
· Oct 2017
Large Premium Amethyst geode with Calcite - 360 x 230 x 190 mm - 14.3 kg
€16,000
est
€16,000
–
—
Miscellaneous
· Oct 2017
Exceptional fine Amethyst geode with Calcite- 380 x 200 x 155 mm - 11.60 kg
€15,000
est
€15,000
–
—
· Oct 2017
Exceptional fine Amethyst geode with Calcite- 380 x 200 x 155 mm - 11.60 kg
€15,000
est
€15,000
–
—
Miscellaneous
· Oct 2017
Very large Amethyst geode with calcite - 775 x 265 x 170 mm - 35.10 kg
€25,000
est
€25,000
–
—
· Oct 2017
Very large Amethyst geode with calcite - 775 x 265 x 170 mm - 35.10 kg
€25,000
est
€25,000
–
—
Miscellaneous
· Dec 2016
Purple amethyst geode with calcite crystals. -26 x 20 x 14 cm- 6.75 kg
€6,500
est
€6,500
–
—
· Dec 2016
Purple amethyst geode with calcite crystals. -26 x 20 x 14 cm- 6.75 kg
€6,500
est
€6,500
–
—
Miscellaneous
· Mar 2017
Natural Amethyst geode with large calcite crystals - 17 x 13.5 x 9 cm - 1.98 kg
€15,000
est
€15,000
–
—
· Mar 2017
Natural Amethyst geode with large calcite crystals - 17 x 13.5 x 9 cm - 1.98 kg
€15,000
est
€15,000
–
—
Arts & Graphics
likekindnessfoundation
· Aug 2025
Geode, celestite, druzy, Septerrian node, cave calcite. Stands included. Size: largest 5"T x 5.5"L
US$19
likekindnessfoundation
· Aug 2025
Geode, celestite, druzy, Septerrian node, cave calcite. Stands included. Size: largest 5"T x 5.5"L
US$19
Wine & Spirits
· Dec 2016
Geode Amethyst Cathedral with fans of goethite and Calcite- 235 x 115 x 90mm- 1840 grams
€24,100
est
€24,100
–
—
· Dec 2016
Geode Amethyst Cathedral with fans of goethite and Calcite- 235 x 115 x 90mm- 1840 grams
€24,100
est
€24,100
–
—
Jewellery & Gems
easterlyauction
· Oct 2024
Geode, Rock, Crystal, Natural, Collectible, Specimen,
US$150
easterlyauction
· Oct 2024
Geode, Rock, Crystal, Natural, Collectible, Specimen,
US$150
Glass
easterlyauction
· Apr 2024
Geode, Rock, Crystal, Natural, Collectible, Specimen,
US$30
easterlyauction
· Apr 2024
Geode, Rock, Crystal, Natural, Collectible, Specimen,
US$30
Glass
easterlyauction
· Jul 2024
Geode, Rock, Crystal, Natural, Collectible, Specimen,
US$6
easterlyauction
· Jul 2024
Geode, Rock, Crystal, Natural, Collectible, Specimen,
US$6
Glass
easterlyauction
· Nov 2022
Keokuk Geode
US$200
easterlyauction
· Nov 2022
Keokuk Geode
US$200
Natural History
