Diamond-Bio replacement lens collection by Sunglass Fix

DIAMOND-BIO

Lenses by Sunglass Fix

Optical excellence, with a reduced carbon footprint
At The Sunglass Fix we care about our planet just as much as we care about high quality optics. That's why our super premium Diamond-Bio lenses are made from top-grade optical Polyamide, with 44% bio-based materials from climate-friendly, renewable sources.
Ultra-tough scratch protection
Anti-reflective coating
Bio-Polyamide lens
Reduced carbon emissions
Photochromatic technology
Japanese polarisation
100% UV protection
AS/NZ Safety Rating
Black Wayfarer sunglasses showing the removal of an old lens for a premium replacement

Unparalleled clarity and durability

Our Diamond-bio lenses represent the pinnacle of optical excellence, using best in class Japanese Polarization technology, exclusive Anti-Reflective coatings to reduce glare, and an ultra-tough outer hardcoat, for ultimate scratch prevention. Good for the planet, and your sunnies.

Bio-based materials

Environmentally friendly production process

The Diamond-bio range utilizes a new production process, which uses 44% bio-content, specifically renewable castor oil. This production process reduces the carbon footprint of each lens by up to 50% compared to a fossil-based manufacturing process.

Castor plant
Castor bean
Castor oil
Polymerisation
Bio-Polyamide
Reduced glare, enhanced clarity

Anti-reflective coatings

Our exclusive anti-reflective (AR) coatings on Diamond-Bio lenses minimize reflections from both external light sources and internal bounce-back, allowing up to 99% of light to pass through for sharper vision. This advanced multi-layer technology creates destructive interference that cancels out glare, reducing eye strain during bright conditions.

Example of anti-reflective coating on a sunglass lens
Person wearing sunglasses that adjust to changing light conditions
Adapts to changing light

Photochromatic adaptive technology

Light conditions change in different environments, our photo-chromatic lenses are designed to automatically adjust their colour intensity depending on UV exposure. They will get lighter in the shade & darker in bright sun, giving full UV protection and maximum convenience.

Protection that lasts

Ultra-tough scratch protection

All Sunglass Fix lenses come with a hardcoat for strong scratch resistance. Diamond-Bio lenses take this to elite levels with an ultra tough hardcoat layer on bio-based polyamide, ensuring durability while staying lightweight with glass-like clarity.

Close-up of a sunglass lens showing its scratch-resistant hardcoat

Sunglass Fix core lens features

Japanese polarisation

Our polarized lenses use a world‑leading Japanese polarization film (rated at 99.9% efficacy) to dramatically cut glare from roads, water, and car windows.

100% UV protection

Our lenses block 100% of harmful UVA and UVB rays up to 400nm, providing maximum eye protection without dimming your view.

AS/NZ Safety rating

Sunglass Fix lenses are among the safest on the market, meeting the world's toughest standards like AS/NZS 1067:2003.

Lifetime breakage warranty

Our lenses are made to last. If a lens breaks, our lifetime warranty ensures it can be replaced, keeping your sunglasses out of landfill.

Diamond-Bio lens colors

Burnt Umber (Solid Brown) lens

Burnt Umber

Burnt Umber Gradient (Brown) lens

Burnt Umber Gradient

Burnt Umber Photochromatic (Brown) lens

Burnt Umber Photochromatic

Black Onyx (Solid Black) lens

Black Onyx

Black Onyx Gradient (Black) lens

Black Onyx Gradient

Black Onyx Photochromatic (Black) lens

Black Onyx Photochromatic

G15 (Solid Green) lens

G15

G15 Gradient (Green) lens

G15 Gradient

Steel Blue (Solid Blue) lens

Steel Blue

Experience exceptional performance

Top of the range lenses that make a big impact on our sunnies, not on our planet.