Isomorph

Calcite Shirt - Double Refraction Mineral T-Shirt

$35.00 USD

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Taxes included.

Color Apricot Pink White Blue White Gray

Size S M L XL 2XL 3XL

For the geology student who's demonstrated double refraction in lab more times than they can count, the rock collector building out their carbonate group, or the teacher who wants a shirt that doubles as a conversation starter about optics.

Calcite is the most common carbonate mineral on Earth and its clear "Iceland spar" variety splits a single beam of light into two visible images, a property called double refraction that geology students still find genuinely startling the first time they see it.

The Calcite Shirt features a hand-watercolored illustration of its rhombohedral crystal form, alongside real carbonate mineral data, Mohs hardness, chemical formula, crystal system.

Mineral data

Calcite Shirt - Double Refraction Mineral T-Shirt — CaCO₃

Mineral group

Carbonate

Hardness (Mohs)

Luster

Vitreous to Pearly

T- shirt Details

Fabric: 100% cotton
Fabric Weight: 7.7 oz/yd² (260 g/m²)
Fabric Thickness: Moderate
DTF Print: Direct to fabric

Care Instructions

Care Instructions:
Wash: Machine wash cold, inside-out, gentle cycle with mild detergent and similar colors.
Dry: Tumble dry low, or hang-dry for the longest life.
Iron: Cool iron inside-out if necessary. Do not iron directly on the print.

Avoid: Do not use bleach or fabric softeners. Do not dry clean.

Returns & Exchanges

If you receive a wrong/defective item, please contact us immediately. We'll arrange a reshipment at no additional cost to you. And you do not need to send back the item.

All claims must be made within 4 weeks of receiving your order.