Ruby Beads 2.5mm — lab-grown ruby

Lab-grown ruby (corundum) is the classic bead material: excellent heat retention, completely taste-neutral, and a visual highlight thanks to its rich color. The beads are lab-created (3A quality, supplied by JCVAP) and color-fast — they won't fade even after countless sessions.

Use cases & volume pricing

Perfect for ball vapes (injector and heater chamber fill), as terp pearls in a banger, or as a thermal-mass bed. Depending on the device you'll typically need several hundred balls — which is why we offer two bulk tiers on top of the standard pack:

Pack	Contents	Price per ball
100 pcs (standard pack)	approx. 3 g	€0.089
500 pcs	approx. 17 g	€0.078
1000 pcs	approx. 33 g	€0.067

Data sheet

Property	Value
Material	Lab-grown ruby (corundum, Al₂O₃, chromium-doped)
Grade	3A, lab-created
Diameter	2.5 mm
Weight per ball	approx. 0.033 g
Mohs hardness	9
Density	approx. 3.98 g/cm³
Melting point	approx. 2,050 °C
Thermal conductivity	approx. 35 W/(m·K)
Specific heat capacity	approx. 0.76 J/(g·K)
Misc	taste-neutral, acid-resistant, color-fast

Care instructions

• Soak in isopropyl alcohol (ISO) regularly, rinse with clean water and let dry completely.
• Never quench hot balls in cold water/ISO — thermal shock can crack any mineral.
• Our beads ship pre-cleaned — ready to use right out of the pack, no burn-off or cleaning needed before first use.