Single Crystal Sapphire | Jewel Parts | Product | NAMIKI PRECISION JEWEL CO.,LTD.

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Single crystal of Aluminum oxide (Al₂O₃ corundum)
Namiki grows single crystal sapphire by EFG method, featuring any desired section forms can be obtained.

Physical Characteristics
Crystal			Hexagon
Gravity		-	3.97
Hardness	Mohs	-	12
Hardness	Vickers Hardness	-	2,300
Strength	Flexural Strength	MP a	690
Strength	Compressive Strength	MP a	2,940
Young's Modulus		GP a	470

Optical Characterisics
Index of Refraction	-	no	1.768
	-	ne	1.76
*Above data is referrence only. The characteristic will be changed depending upon the shape and conditions in use.

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Jewel Parts

Single Crystal Sapphire

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