Diamond Carving Burs

Diamond Carving Burs – Resin & Sintered Diamond Burs for Stone, Glass & Gem Carving

Professional diamond carving burs in resin bond and sintered bond for stone carving, glass engraving, gem drilling, and lapidary detail work. Available in a comprehensive range of tip shapes — cylinder, round end, ball, bullet, flame, cone, tapered, mushroom, concave bead, drum, hollow cup, and inverted trapezoid — with 2.35mm, 3mm, and 6mm shank sizes. Grit range from 30 to 1200 for coarse shaping through fine detail finishing. Available as single burs, 5-piece sets, 10-piece sets, and 100-piece bulk packs.

🔥 Shop Diamond Carving Burs – From $12.00

Available Sizes & Pricing

Product Type Head Size Shank Grit Pack Price
Round Ball Bur Set (Sintered) H012 3–8mm 3mm 100 5pcs $30.00
Conical Point Bur Set (Sintered) H009 3–7mm 3mm 320 5pcs $30.00
Flat Head Inverted Cone (Sintered) 4–8mm 3mm 70–600 5pcs $30.00
Round-End Cylindrical (Sintered) 10mm 6mm — 5pcs $16.00
Concave Bead Bur (Sintered) 12mm 6mm — 5pcs $18.00
Round Ball Burs (Resin) 6–14mm — 46–120 10pcs $12.00–$18.00
Flat End Cylinder Set (Resin) — 6mm Multi-grit 7pcs $25.00
Round End Cone Set (Resin) — 6mm Multi-grit 7pcs $25.00
Conical Point Set (Resin) — 6mm Multi-grit 7pcs $25.00
Hollow Cup Bur (Bulk) 2.5mm / 8mm 2.35mm / 3mm 80 100pcs $12.00–$30.00
Round End Cylinder (Bulk) 1.5mm 2.35mm 1200 100pcs $45.00
Radius Angle Head Bits 3/4" / 1" — — Single $15.00

Tip Shape Guide

Shape Best Application Shank
Flat End Cylinder Flat-bottom channels, inlay work, flat surface grinding 3mm / 6mm
Round End Cylinder General carving, curved channels, surface shaping 2.35mm / 3mm / 6mm
Round Ball Concave carving, bead setting, rounded relief work 3mm / 6mm
Bullet / Tapered V-grooves, pointed detail, engraving lines 3mm / 6mm
Flame / Cone Fine detail carving, pointed relief, gem seat cutting 3mm / 6mm
Concave Bead Bead groove shaping, consistent bead profile 6mm
Hollow Cup Cabochon grinding, curved surface shaping 2.35mm / 3mm
Inverted Trapezoid Undercutting, dovetail recesses, inlay preparation 6mm
Radius Angle Angled edge profiles on glass grinders Standard grinder spindle

Compatible Applications

  • Stone carving and engraving — agate, jasper, quartz, jade, turquoise
  • Glass carving and surface texturing — fused glass, stained glass, borosilicate
  • Gemstone bead groove grinding and bead profile shaping
  • Inlay preparation and undercutting on hard stone
  • Ceramic and porcelain surface carving
  • 2.35mm shank: Dremel and hobby rotary tools
  • 3mm shank: Foredom flex shaft and professional rotary tools
  • 6mm shank: die grinders and larger professional rotary tools

Related Tools

Frequently Asked Questions

  • Q: What is the difference between resin bond and sintered diamond carving burs?
    A: Resin bond burs have diamond particles bonded in a resin matrix — economical and good for general carving on softer stone and glass materials. Sintered burs have diamond embedded throughout the entire bur body — as the surface wears, fresh diamonds are exposed, giving 5–10× longer service life on hard stone and glass. Sintered burs cost more upfront but are significantly more economical for professional and high-volume carving work.
  • Q: What shank size do I need for my rotary tool?
    A: 2.35mm shank burs fit Dremel and similar hobby rotary tools. 3mm shank burs fit Foredom flex shaft machines and most professional rotary tools. 6mm shank burs fit standard die grinders and larger professional rotary tools. Always verify your tool's collet size before ordering.
  • Q: Should diamond carving burs be used wet?
    A: Yes — always use water cooling when carving with diamond burs. Water prevents heat buildup that can damage both the bur and the workpiece, extends bur life significantly, reduces stone dust, and produces cleaner cuts. Use a water drip system, water swivel adaptor, or work in a shallow water bath.
  • Q: What grit bur should I start with for stone carving?
    A: Start with 30–80 grit for aggressive material removal and rough carving, 100–120 grit for general shaping and detail work, and 320–1200 grit for fine detail finishing and surface smoothing before polishing. The 100 grit sintered ball bur set (H012) is the most versatile starting point for general gemstone carving.
  • Q: What is the advantage of buying 100pcs bulk packs?
    A: Bulk packs (100pcs) are economical for production carving, jewelry making, and bead drilling where burs are consumed regularly. The per-bur cost in bulk packs is significantly lower than individual or small set purchases — ideal for studios and production environments where the same bur size and grit is used continuously.