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![DiamondSeeds](https://www.d-edp.jp/en/wp-content/themes/edp_en/_assets/images/top/img_product_001.jpg)
![DiamondSeeds](https://www.d-edp.jp/en/wp-content/themes/edp_en/_assets/images/top/sp/img_product_001_sp.jpg)
Diamonds are the most popular gem stones for jewelry.
![DiamondSubstrates](https://www.d-edp.jp/en/wp-content/themes/edp_en/_assets/images/top/img_product_002.jpg)
![DiamondSubstrates](https://www.d-edp.jp/en/wp-content/themes/edp_en/_assets/images/top/sp/img_product_002_sp.jpg)
Research organizations across the world are conducting research on the use of diamond as a material for semiconductor devices.
![HeatSpreadersOpticalWindows](https://www.d-edp.jp/en/wp-content/themes/edp_en/_assets/images/top/img_product_003.jpg)
![HeatSpreadersOpticalWindows](https://www.d-edp.jp/en/wp-content/themes/edp_en/_assets/images/top/sp/img_product_003_sp.jpg)
Optical Windows
Diamond has, optically, one of the widest transmission bands covering from UV to Infrared.
![DiamondToolBlanks](https://www.d-edp.jp/en/wp-content/themes/edp_en/_assets/images/top/img_product_004.jpg)
![DiamondToolBlanks](https://www.d-edp.jp/en/wp-content/themes/edp_en/_assets/images/top/sp/img_product_004_sp.jpg)
Diamond is used as tool blanks for cutting and grinding non-ferrous metals such as aluminum and copper, plastics and ceramics.
![SyntheticJewel](https://www.d-edp.jp/en/wp-content/themes/edp_en/_assets/images/top/img_product_005.png)
![SyntheticJewel](https://www.d-edp.jp/en/wp-content/themes/edp_en/_assets/images/top/sp/img_product_005_sp.png)
Diamonds are the most popular gem stones for jewelry.
![Semiconductor](https://www.d-edp.jp/en/wp-content/themes/edp_en/_assets/images/top/img_product_006.png)
![Semiconductor](https://www.d-edp.jp/en/wp-content/themes/edp_en/_assets/images/top/sp/img_product_006_sp.png)
Research organizations across the world are conducting research on the use of diamond as a material for semiconductor devices.
![ApplicationProduct](https://www.d-edp.jp/en/wp-content/themes/edp_en/_assets/images/top/img_product_007.png)
![ApplicationProduct](https://www.d-edp.jp/en/wp-content/themes/edp_en/_assets/images/top/sp/img_product_007_sp.png)
Diamond has, optically, one of the widest transmission bands covering from UV to Infrared.
![CuttingTool](https://www.d-edp.jp/en/wp-content/themes/edp_en/_assets/images/top/img_product_008.png)
![CuttingTool](https://www.d-edp.jp/en/wp-content/themes/edp_en/_assets/images/top/sp/img_product_008_sp.png)
Diamond is used as tool blanks for cutting and grinding non-ferrous metals such as aluminum and copper, plastics and ceramics.
About us
EDP is developing potential of single crystal synthetic
diamonds by our high technology.
![CONCEPT](https://www.d-edp.jp/en/wp-content/themes/edp_en/_assets/images/top/img_concept_001.jpg)
![CONCEPT](https://www.d-edp.jp/en/wp-content/themes/edp_en/_assets/images/top/sp/img_concept_001_sp.jpg)
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