Will these work with semi precious gemstones?? -sapphire, amethyst, citrine etc

We use these to drill sea glass, tile, and shells. Not sure if they will work on gemstones.

I want to drill a hole on each side of a 1 inch flat marble for a bracelet. what bit di i look for. i saw a video . need a round or conical tip. help

I had best luck making a clamping jig that set in a beaker of water and used a Dremel drill press. The drill is about 1/2 inch long and I had to drill from both ends because a bead was larger than 1/2 inch. I used the pointed cone to get an accurate start and then reamed out with a 1mm drill to complete the hole. Getting the two tunnels to meet in the center is tricky when the drill is too short. Work slow under water. Don J.

Will these work with a Ryobi quick release drill?

These are really a terrible quality... Don't think I have ever successfully used them as they don't even drill glass.

Do they fit dremel 3000 drill?

Yes they will fit a Dremel 3000 (as long as you have the right size collet) however I do not recommend these drills at all for drilling glass (which is what i bought them for) they were completely useless.

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1mm Diamond Drill Bits 30 Pcs Compatible with Diamond Dremel Bits

Product ID: 2895426

Details

Cutting Angle String
45 degrees
Cutting Diameter
1 millimeters
Finish Type
Nickel
Material
Alloy Steel
Shank Type
1/8 inch

⚡triple-layer diamond coating for durability

💎1mm precision diamond tip

🛠️fits any 1/8 inch rotary tool shank

₩62919

Duties & taxes included

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Sold byAmazon South KoreaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💎 Drill with precision, craft with confidence.

BUILT TO OUTLAST - Triple-layer diamond coating and alloy steel body resist snapping and wear.
CRAFT LIKE A PRO - Perfect for jewelry makers, stone carvers, and DIY enthusiasts seeking consistent results.
ALL IN ONE CONVENIENCE - 30 identical bits in one kit—no size guessing, just grab and go.
UNIVERSAL COMPATIBILITY - Fits all standard 1/8 inch rotary tool shanks—no special collet needed.
FLAWLESS PRECISION EVERY TIME - 1mm diamond tips deliver clean, crack-free holes in glass, stone, and gems.

The Drilax 1mm Diamond Drill Bits 30-piece set offers professional-grade precision with uniform 1mm diamond tips, compatible with all 1/8 inch rotary tools. Engineered with a durable alloy steel body and triple-layer diamond coating, these bits ensure clean, crack-free holes in glass, stone, and gems, making them ideal for jewelry makers, stone carvers, and DIY crafters alike.

Specifications

ASIN	B00AZMRZ4W
Best Sellers Rank	#7,409 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #3 in Power Rotary Tool Attachments
Brand	DRILAX
Brand Name	DRILAX
Customer Reviews	4.3 out of 5 stars 3,573 Reviews
Cutting Angle String	45 degrees
Cutting Diameter	1 millimeters
Finish Type	Nickel
Finish Types	Nickel
Included Components	30 Pieces Diamond Drill Bits, Drill Bit Organizer Case, Clear Case Cover
Item Highlight	Fits Rotary Tools; Diamond Dremel Bits for Glass, Stone, Sea Shells, Jewelry Making, Lapidary Crafts, Gemstones
Item Weight	9.07 g
Manufacturer	DRILAX
Material	Alloy Steel
Material Type	Alloy Steel
Minimum Bore Diameter	1 millimeters
Model	DRILAX
Number of Pieces	30
Part Number	DX30p1mmCASE
Point Style	Diamond Point
Set Name	30-Piece 1mm Diamond Drill Bits Set
Shank Type	1/8 inch
Surface Recommendation	Glass, Stone, Gems, SeaShells, Porcelain, Ceramic, Rock
Tool Flute Type	Straight
UPC	600095802246
Unit Count	30 Count

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