Diamond Tweezer With / Without Grooved Tip

Sort, inspect, and evaluate loose diamonds and colored gemstones with precision balance and tactile feedback. The Professional Diamond & Gemstone Tweezers are constructed from high-tensile spring steel, engineered to deliver smooth, low-fatigue spring action during long appraisal and sorting sessions. Measuring 162 mm with a balanced 30 g weight, they are available in both Grooved (Serrated) tips to lock securely onto diamond girdles and prevent pop-outs, and Non-Grooved (Smooth) tips for scratch-free handling of delicate stones. With five tip-width options ranging from 0.30 mm (XS / XF) to 1.80 mm (XL), this series accommodates stones from micro-melee below 0.15 ct up to multi-carat gems over 5.0 ct.

Why Choose Professional Diamond Tweezers

• Calibrated Spring Tension: Hand-adjusted spring arms provide a light, consistent closing feel that minimizes hand fatigue while eliminating excessive pressure that causes stones to shoot off.

• Grooved vs. Non-Grooved Options:

  • Grooved Tip (Models XF1, F1, M1, L1, XL1): Features micro-milled inner teeth that grip stone girdles firmly, providing slip-resistant control when transferring stones to balances or trays.

  • Non-Grooved Tip (Models XF, F, M, L, XL): Features a smooth inner surface to handle softer stones, pearls, and polished metal mounts without abrasion.

• Five Carat-Specific Tip Widths: Precision ground from ultra-fine 0.30 mm for melee sorting up to heavy 1.80 mm for substantial focal gems.

• Machine-Ribbed Anti-Slip Body: Dual-sided ribbed gripping sections provide non-slip fingertip control during prolonged grading under a 10x loupe or stereo microscope.

• Protective Storage Sleeve: Includes a clear-front vinyl storage pouch and silicone protective tip cap to maintain needle-point jaw alignment during transport.

Technical Specifications & Stone Size Selection Matrix

Model (Grooved)	Model (Non-Grooved)	Tip Size Profile	Tip Width	Recommended Stone Carat Range	Primary Bench Application
XF1	XF	XS (Extra Fine)	0.30 mm	Below 0.15 ct	Micro-melee, pavé diamonds, tiny accent stones, watch parts
F1	F	S (Fine)	0.60 mm	0.15 ct – 0.50 ct	Standard melee, small fancy cuts, earrings, and cluster work
M1	M	M (Medium)	0.90 mm	0.50 ct – 1.50 ct	Most popular size; commercial solitaire diamonds and standard colored gems
L1	L	L (Large)	1.20 mm	1.50 ct – 5.00 ct	Large engagement stones, focal colored gems, substantial crystals
XL1	XL	XL (Extra Large)	1.80 mm	5.00 ct & Above	Multi-carat diamonds, large rough specimens, heavy mountings

Product Designation	Diamond Tweezer With / Without Grooved Tip
Material Construction	High-Tensile Spring Steel
Tip Variations	Grooved (Serrated Inner Jaw) / Non-Grooved (Smooth Inner Jaw)
Overall Tool Length	162 mm (6.38 in)
Handle Width	8 mm (0.31 in)
Net Unit Weight	Approx. 30 g