Ruby selection tips:
(1) Particle size: The larger the ruby ​​particle size, the higher the price.
(2) Color: There are many colors of ruby, the best is darker red, followed by reddish purple, followed by darker pink, purple, slightly brownish red, others such as Brownish red, blackish red, very light pink are poor rubies. In addition, when observing the ruby ​​from the table top, it is best to see only one color when rotating. If other colors are visible, the orientation of the ruby ​​is not correct.
(3) Fire color: It is the color of the ruby ​​front under the illumination of the light source. It is essentially a reflection of the transparency, cut and color of ruby. A good ruby ​​is gently rotated. Faced with yourself), it can be seen that there are a lot of red small "flaming" in the interior, and the high-quality ruby ​​requires that the fire color account for more than 55% of the entire crown.
(4) Crack: Since the crack of ruby ​​is more common, when selecting, try to select ruby ​​with less cracks and fineness, especially not to pick rubies that pass through the center of the gem.
Hcs Drill Bits For Wood-Flat Spade Wood Drill
Use:Wood Drilling
Finish:Plain, BrightProduct Name:Tri-Point Flat Paddle Wood Boring Spade Hollow Drill Bit
Features
1. Expert quality, manufactured from special carbon steel hardened and tempered
4. Double cutting spurs scribe the outside of the hole reducing breakout
8. Hang hole allows for bit storage& wire pulling
Flat Spade Wood Drill,Wood Drilling Spade Drill Bit,Flat Wood Spade Boring Drill Bit,Hcs Hex Shank Twist Drills
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