We searched for“Christensen Agate American Swirl solid core marble”(identified as Christensen Agate Company, confidence: High)
Typical realised range (Gemini estimate): £50-£500
Comparables
65
Median
£74
Suggested estimate
£40 – £90
25–75% range
£41 – £119
Overall range
£8 – £1,137
Distribution
Sell-through 100% of lots sold
0% at premier salerooms
Trend↘ falling -72% over 5y
Median from 65 sold (all-time — too few recent sales)·hammer prices, excl. buyer's premium — fair-market auction value (retail/insurance replacement runs higher)
132 comparables for “Solid Core Swirl Marble” · page 1 of 6