UV RESIN CRYSTAL is clear resin, which cures under UV light. Surface is smooth even without polish. Also its enough hard to polish for designing too. Advantage of this UV resin crystal is that, you can make whatever colors by mixing with acrylic colorants.
Usage vary depends on idea, design etc. Make color and apply on Jewellry or others and cure under the UV light. Curing time is depends on UV light power 1 to 10 minutes for 1 layer (darker color more time).
This resin can be used as glue for fixing stone( has to be transparent to go through UV light) or watch face etc.