Rough Opal with Polished Face – Virgin Valley, Nevada
About This Specimen
This rough opal specimen from Virgin Valley, Nevada, has a broad polished top that reveals milky white opal within a contrasting tan-brown natural exterior. Subtle pale blue-gray margins add definition to the exposed opal, while fine hairline fractures remain visible across the polished surface.
Specimen Details
- Mineral / Specimen Type: Rough opal mineral specimen with a polished face
- Locality: Virgin Valley, Nevada, USA
- Form & Structure: Massive to nodular rough material with a polished top surface
- Color: Milky white opal with faint pale blue-gray margins in a tan-brown rough exterior; no distinct play-of-color is evident in the photographs
- Rarity: Common to uncommon; opal is widespread, while attributed Virgin Valley material offers added locality interest
- Mohs Hardness: 5.5–6.5
- Luster: Waxy to vitreous on the polished face; dull to earthy on the rough exterior
- Chemical Formula: SiO₂·nH₂O
- Specimen Size: Toenail
- Dimensions: 3.8 × 2.3 × 3.5 cm
- Specimen Weight: 29 g — mineral only
- Total / Display Weight: 28.9 g, seller-reported; verification recommended
- Display Preparation: Mounted in a 2 × 2 × 2 inch display box
About Opal
Opal is an amorphous, hydrated form of silica rather than a mineral with an ordered crystal structure. Its composition is written as SiO₂·nH₂O, and its Mohs hardness typically ranges from 5.5 to 6.5. Opal may be transparent through opaque and can occur with or without play-of-color; this specimen presents a milky, non-play-of-color appearance in the supplied photographs.
Traditional & Metaphysical Associations
In crystal and spiritual traditions, opal is often associated with creativity, inspiration, emotional expression, and intention-setting. Some collectors use it as a symbolic focus for meditation or simply appreciate its soft color and organic appearance as a contemplative display piece. Metaphysical properties are based on traditional beliefs and are provided for cultural and informational purposes; they are not scientifically established or intended as medical advice.
Why This Specimen?
The polished white exposure creates a strong visual contrast with the rugged tan-brown exterior while preserving the character of the original rough material. Its upright presentation and protective display box make it an accessible locality specimen for a shelf or compact mineral cabinet.
Exact specimen pictured. You will receive the exact specimen shown in the photographs.