
Gel Polish
Inspired by Crux — the Southern Cross constellation that has guided southern-hemisphere navigators for forty thousand years and sits at the centre of the Australian flag. A clear gel base packed dense with fine silver and platinum flake for a finish that reads as pure starlight on the nail.
or 4 interest-free payments of $5.74 with


Frequently Bought Together
Bundle total: $91.80
Crux – 37 – Professional Gel Polish 15ml
**Colour Story & Identity**
Star-bright, mineral-cool, the most luminous shade in the OPAL gel range. Crux takes its name from the official astronomical title of the Southern Cross — the constellation that has guided Australian and Polynesian navigators for over forty thousand years and sits at the centre of the Australian flag. Crux is the brightest small constellation in the southern sky, and on clear nights deep in the outback it looks less like five stars than a scatter of crushed silver across velvet. This shade captures that exact celestial moment: a clear, light-filled base packed dense with fine silver and platinum flake, layered with larger mirror-bright fragments that lift and flash from any angle. The result reads as pure starlight on the nail — luminous rather than chrome, dimensional rather than flat. It is the hardest-working shade in any kit: a stand-alone statement, a celebratory accent, a layering tool for dressing up creams, or a French-tip on its own over a clean nude. A single coat already glints; two coats deliver full silver-on-velvet coverage.
**Wear Experience & Styling**
Crux is built for occasion and accent in equal measure. Wear solo for celebration nails, or layer over any shade in the OPAL catalogue to convert it into a metallic. Pair with sequins, silk satin, leather, or any hardware-heavy jewellery — both warm and cool metals work because the flake itself reads neutral-silver rather than icy. For nail art, French-tip in Crux over a creamy nude for a modern silver tip, or run a single-finger accent against four creams. Application tip: tap the brush vertically rather than dragging — vertical placement keeps the larger reflective flakes lying flat instead of standing on edge, giving a smoother mirror-like cure.
**Skin Tones**
Crux is genuinely universal. Fair and porcelain skin tones gain a frost-bright lift. Light and medium tones get a clean silver brightness without the cold pull of true chrome. Olive skin sees the silver settle into a warmer pewter glow against golden undertones. Tan and deep skin tones benefit most — the silver flake lights up against rich complexions like stars against a dark sky.
**Best Worn For**
New Year’s Eve countdowns, milestone birthday parties, festive dinners, end-of-year racing carnivals, opera and gala nights, school formals, hen’s parties, awards evenings, and any occasion where the directive is shimmer-forward, light-catching, and unapologetically celebratory.
**Pairs With**
Pair with a clean black gel for a classic monochrome contrast that lets Crux do the heavy lifting. Layer beside a deep burgundy or wine for festive-season drama. Run alongside a true cream nude for a polished bridal or bridesmaid pairing. Sit it next to a cool icy blue for a winter-edit moment.
**About the Finish**
Glitter finish suspended in a clear gel base. Two flake sizes are layered into the formula — fine silver microflake provides the base sparkle, and larger mirror-bright fragments provide reflective lift. Light catches both layers at multiple depths, producing a starlight-on-velvet effect rather than a flat metallic. Top coat locks the finish without dulling the dimensional sparkle.
**Colour Type**
Neutral-toned silver with bright reflective flake. Saturation reads light-and-bright on the OPAL colour wheel — closer to platinum and sterling than to grey or pewter. Sits in the silver/grey family, with no warm or cool bias. A close cousin to chrome, frost, and the brushed sterling tones of fine silverware. The most flexible metallic in the OPAL gel range.
How To Use
Clean, shape, and lightly buff the surface
Apply a thin Opal super base coat and cure for 30–60 seconds
Apply 1 or 2 thin coats, curing each layer fully
Seal with a top coat and cure to finish
Wipe the inhibition layer with a lint-free wipe for a glass-like shine
Pro Tip
Apply thin, even coats — two thin layers give better pigmentation and longer wear than one thick coat. Avoid flooding the cuticle area.
New to gel nails?
Free step-by-step video tutorials for beginners.
Customer Reviews
Only verified buyers can leave a review. Log in or create an account to check your eligibility.
The Opal difference
Developed with Australian nail technicians. Chip-free, high-pigment wear for 3–4 weeks.
Free from formaldehyde, toluene, and DBP. Kind to your nails and kind to the planet.
Each 15ml bottle gives you 25+ manicures. Salon results at a fraction of the price.
Step-by-step tutorials included. Most beginners achieve salon results on their first try.
Common Questions