Permanent Collection · Est. MMXXIV
The Hall of Minerals & Gems
A standing exhibition of crystallised earth — silicates, sulfides, native elements, carbonates & phosphates — drawn from private cabinets and recent field acquisitions. Each piece accompanied by its locality, formation history, and curator's note. Pieces rotate; the cabinets do not.
Object of the Day · 13 July
Plan of the Galleries
Five wings.
One mineralogy.
The collection is arranged by crystal class. Begin at the Rotunda and proceed clockwise; the North Hall closes earliest. Visitors are reminded that vitrine glass is older than most countries — please do not lean.
Plan a visitNative Elements
Silicates
Sulfides
Carbonates
Phosphates
Fig. 1 — Plan of the principal galleries, drawn to no particular scale.
Currently on View · July 2026
Recent acquisitions to the collection
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I.
Spessartine on Smoky Quartz
Spessartine, Quartz
Wushan Mine, Tongbei, Fujian, China
Available
$3100.00
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II.
Watermelon Tourmaline Slice
Elbaite (Tourmaline)
Cruzeiro Mine, Minas Gerais, Brazil
Available
$1450.00
-
III.
Cobaltoan Calcite
Calcite (Cobaltoan)
Mashamba West Mine, Katanga, DRC
Available
$950.00
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IV.
Smoky Quartz Faden
Quartz var. Smoky (Faden)
Hunza Valley, Gilgit-Baltistan, Pakistan
Available
$320.00
-
V.
Vera Cruz Amethyst
Quartz var. Amethyst
Las Vigas, Veracruz, Mexico
Available
$420.00
From the Director's Desk
"It is not enough that a mineral be rare. A specimen earns its place in the cabinet by the patience of its growth, the integrity of its termination, and the quiet of the room in which it is shown. We collect, in the main, for that quiet."
— Dr. M. Ostroff, Director
Visitor Information
Plan your visit
Hours
Tuesday – Sunday
10:00 – 17:30
Closed Mondays & civic holidays
Location
25 Main Street
Roslyn, NY 11576
Long Island Rail Road · Roslyn
Admission
Free, by appointment.
Private viewings & acquisition consultations available.