You'll typically notice less color while looking at the stone from the top down anyway (appraisers grade by looking at the side), and the metal of the setting further masks the tones.

通常情况下你从戒指上方看钻石时很少会注意到颜色(评估钻石的颜色级别是要看侧面的)，而底座的颜色则进一步掩盖了钻石的本色。

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This equipment adopts the titanium nitride metal mixing techs forming ion gold membrane with good abrasion resistance, therefore it fits for various top-grade decorating membrane.

该设备采用氮化钛表面掺金技术，形成离子金膜层，耐磨性非常好，广泛用于各种高档装饰膜层。

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The core business of HKS is the recycling of ferrous and non-ferrous scrap to create high grade raw materials for metal producers all over the world.

HKS的核心业务是有色金属和非有色金属废料的回收，世界各地的金属生产商创造高档原料。

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To wit, the engineers opted for 4130 chrome alloy steel, an aircraft-grade metal.

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The materials then goes through a multi-tiered supply chain where they are sold and possibly resold several times before reaching facilities that specialize in either cutting and polishing gemstones and diamonds, or turning raw precious metal into jewelry-grade material.

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