What are Swarovski flatback non hotfix crystals?
Swarovski flatback non hotfix crystals are flat-backed rhinestones with no heat-activated glue on the reverse. Instead, they're fixed in place using a crystal adhesive, which makes them incredibly versatile. Because there's no heat involved, you can apply them to surfaces that fabric-only hotfix crystals can't handle.
- Flat, foiled base for maximum sparkle and a secure bond
- Applied with glue such as Gem Tac or E6000, or set into metal mounts
- Ideal for materials you can't iron, from acrylic nails to glass and metal
- Available across a wide spread of SS sizes and colours
Non hotfix or hotfix, which should you choose?
Both are genuine Swarovski flat back crystals with the same cut and brilliance. The difference is purely how they attach.
- Non hotfix (this page) — no adhesive on the back, applied with glue or metal settings. Best for nails, hard surfaces, delicate fabrics and anything you can't heat.
- Hotfix — pre-glued back activated with heat from an applicator or iron. Best for garments, dancewear and costumes where you're working directly onto fabric.
Not sure which suits your project? Our friendly team is always happy to help you choose.
Swarovski flatback crystal sizes
Swarovski flat back crystals use the SS (stone size) system. Smaller sizes suit fine detail like nail art and tooth gems, while larger sizes make bold focal points on costumes and accessories. Here's a quick guide to popular sizes and their millimetre equivalents.
Size: ss5 (1.8mm) - use for Nail art, fine detail
Size: ss7 (2.2mm) - use for Nail art, delicate work
Size: ss10 (3mm) - use for detailed embellishment, craft, cardmaking
Size: ss16 (4mm) - use for fashion and dancewear
Size: ss20 (5mm) - use for dancewear, statement sparkle
Size: ss34 (7mm) - use for Irish dance
Browse our full crystal size chart for the complete range.
What can you use flatback crystals for?
Non hotfix flat crystals are wonderfully adaptable, which is exactly why professionals and hobbyists reach for them. Popular uses include:
- Nail art: fine sizes for salon and competition designs
- Dance and performance costumes: durable sparkle that holds up under the lights
- Bridal and occasion wear: refined detail on veils, shoes and accessories
- Tooth gems: small stick on crystals for professional tooth gem application
- Accessories and craft: bags, phone cases, picture frames, stationery and gifts
- Homeware and hard surfaces: glass, metal, ceramics and more
How to apply Swarovski non hotfix crystals
Applying non hotfix rhinestones is simple with the right glue and a steady hand.
- Clean and dry your surface so the adhesive can grip properly.
- Choose a suitable glue, Gem Tac for fabric and general craft, E6000 for a strong permanent hold, or Crystal Fix for nails.
- Pick up each crystal with a wax pencil or applicator tool for precise placement.
- Apply a small dot of glue, press the crystal down firmly and leave to cure fully.
Need adhesives or tools? Take a look at our glue and application range to complete your kit.
