Spire Batteries
Real stone. Soft light. Made to be noticed.
Our custom-wrapped batteries are made specifically to fit the Spire Pendant. Each battery contains two SR626SW (377) button cells sealed in clear plastic to prevent shorting and ensure reliable performance. Designed exclusively for Spire Pendants, each battery lasts up to 250 hours of continuous light.
Ships in 2–3 days
2-Year Warranty
LED + adhesive covered.
Free U.S. Shipping
On orders $49+.
30-Day Returns
Try it at home.
Design
Design by RFH.
Spire was born from countless experiments with light — exploring how color, warmth, and wavelength interact with natural stone. Every detail was shaped to balance precision and emotion, turning raw stone into something living. The result is a pendant that reveals a fragment of time and space.
Shell. Machined from 303 stainless steel and hand‑polished for strength and simplicity. Compact, water‑resistant, and built to protect the light within.
Crystal. No two are alike. Each crystal is hand‑selected for its clarity, inclusions, and the way it comes alive under light — revealing patterns that exist in no other piece.
LED. A tuned low‑power LED (~6–9 lumens) paired with an inline resistor creates a soft, balanced glow. Designed for over 250 hours per battery cycle and 100,000+ total hours of life.
Fiber Optic. In opaque stones, a precision‑drilled side‑glow fiber optic spreads light evenly through the crystal — revealing hidden depth and natural texture within each piece. (Patent pending)
What’s in the Box
Your Spire Pendant arrives ready to glow with a matching chain and extra batteries.
FAQ
Twist the top to turn it on or off. A small LED inside sends a soft glow through the crystal. Your Spire arrives with one small coin-cell battery pack already installed, plus 2 extra packs in the box.
Each battery pack can give up to 250 hours of light. Your Spire includes one installed pack plus 2 extra packs, so you get up to about 750 hours total before you need more. With occasional use, one pack can last for months.
Yes, when the metal shell is tightened. Small splashes and rain are fine, and our warranty covers the LED and adhesive. We recommend not submerging Spire or swimming with it.
Spire has a 2-year warranty for the LED and adhesive. If the crystal breaks by accident, we can help with a 35% replacement discount. Learn more.
Yes. It looks like a crystal necklace when the light is off. Twist it on when you want the glow, and twist it off when you want to save battery.
The light is soft and gentle, around 6-9 lumens. It is bright enough to show the color and patterns inside the crystal. It looks best indoors, in shade, or at night.
The pendant is about 1.5" tall and 0.4" wide. It is light enough for everyday wear, and it comes with a 22" stainless steel chain.
Your crystal will match the product photos, but the exact color and patterns will be its own. That is what makes each one special. You also have 30 days to return or exchange it.
We work with trusted crystal partners around the world. Each stone is checked with light, then cut, polished, and set into the pendant. Learn more about our crystals.
Crystal Library
Natural stones, selected for light.
Learn more about our crystals, where they come from, and how each stone is checked for color, clarity, inclusions, and glow.
Learn moreReserved for Humans
Reserved for Humans is an independent jewelry brand based in DeLand, Florida. We explore jewelry built around light and natural materials. Spire is our first release: a light-up crystal necklace that reveals the hidden textures, inclusions, and formations inside natural stone.
Spire is the starting point for a broader line of illuminated jewelry, with more designs currently in development.
Our story
Featured in Forbes as a standout light-up accessory for nightlife and festivals.