雅虎香港 搜尋

  1. 元朗大棠有機生態園 相關

    廣告
  2. 上個月有 超過 100 萬 名用戶曾瀏覽 agoda.com

    立即預訂可慳更多,Agoda®一直保證最低價! 我們全天候為你提供協助,出走都唔會注定一人!

    • 香港

      超值酒店,神秘優惠

      先訂後付,節省更多!

    • 折扣優惠

      計劃緊下次旅程?

      我們為你提供最抵優惠!

搜尋結果

  1. 實驗室培育 vs.蘇聯石(高碳鑽) vs. RZ®人造鑽石 那麼實驗室培育鑽石,蘇聯石(高碳鑽)和RZ®人造鑽石有什麼區別? 簡而言之,實驗室培育鑽石是在受控實驗室環境中生長的純結晶碳鑽石。 它們具有與地球開采的鑽石相同的化學,物理和光學性質。 它們的分級與地球開采的鑽石相同,唯一的區別 ...

    • How Are Lab-Created Diamonds Made?
    • Lab Grown Diamond Benefits
    • What Colors Are available?

    Each laboratory-created diamond is grown by placing a diamond ‘seed’ into a chamber of heat and pressure. This chamber mimics the natural growing process. Crystallization occurs allowing the lab-grown diamond to mature within six to ten weeks. It is then cut, polished and graded by the same world-renowned labs that certify earth-mined diamonds. The...

    UNMATCHED BEAUTY

    Our collection of lab-created diamonds are available up to IF in clarity, D in color, Ideal in cut, and up to 10 carats in size. They come in a variety of shapesincluding round, rose, emerald, cushion, oval, oval rose, heart, princess, trillion, and radiant. Colors include white, yellow, blue, pink, and green.

    UNRIVALED QUALITY

    Unlike other retailers, every Rooselle Jewelry lab-created diamond is Type IIa, the purest form of diamond. They are harder and more brilliant than Type Ia diamonds. Only 2% of earth-mined diamonds are of this quality. Furthermore, each diamond is graded and certified by the same leading independent gemological labs that are used to grade earth-mined diamonds.

    UNBEATABLE VALUE

    Lab-created diamonds cost up-to 40% less than their mined diamond equivalents. Buyers beware: keep an eye out for "grown diamonds" sold for a few hundred dollars per carat. If the deal seems too good to be true, it probably is. Only diamond simulantsfall in this price range.

    WHITE LAB-CREATED DIAMONDS

    A pure carbon diamond with no impurities will grade as a colorless diamond. However, the majority of both mined and lab-created diamonds contain impurities, most of which are nitrogen. The nitrogen atoms within the diamond lattice create the yellow tint. In cases of fancy colored diamonds, a pure yellow color is created. Nearly all diamonds, both mined and lab-created, start out as yellow diamonds. Over the span of millions of years and exposure to pressure and heat, mined diamonds split the...

    YELLOW LAB-CREATED DIAMONDS

    Roselle Jewelry’s yellow lab-created diamonds are optically, chemically and physically identical to yellow earth-mined diamonds, but are offered free of conflict and on average 10% of the cost. They are available in a color range from fancy yellow to fancy vivid yellow, in sizes up to 2.0 carats and a variety of shapes. Both mined and lab-created yellow diamonds get their color from nitrogen. While diamonds are made up of carbon, impurities within the stone exist. It is the introduction of th...

    BLUE LAB-CREATED DIAMONDS

    Blue lab-created diamonds are optically, chemically and physically identical to blue earth-mined diamonds and are offered free of conflict and about 10% of the cost. They are typically offered in sizes smaller than 1.50 carats and come in a color range of fancy light blue to fancy intense blue. Both mined and lab-created blue diamonds get their color from boron. While diamonds are made up of carbon, impurities within the stone exist. It is the introduction of these impurities, in this case bo...

  2. RZ®人造鑽石是獨家的配方合成寶石粉未混合一起, 再經過高壓壓縮後, 使用高反射防熱材質加熱至高溫鎔化合成的原料晶體, 等待冷卻後再經由利用高能超聲波進行化學蒸氣沉積處理處理以令其硬度接近天然鑽石。 RZ人造鑽石仍然為實驗性晶體實驗室合成生產,其後將會不斷改良配方以達至最佳狀態。 點擊下面的鏈接,將RZ®人造鑽石與我們實驗室培育或天然鑽石進行比較. 比較人造鑽石及鑽石. 價格和形狀. RZ®人造鑽石有多種形狀和卡數 (克拉)尺寸可供選擇。 每顆RZ®人造鑽石的價格僅為每卡 (克拉)688.00港元,分級為FL淨度,D顏色,並提供全面免費保修,使RZ®人造鑽石成為最美觀,最經濟的鑽石替代品。 您的設計師夢想戒指現在真正成為現實。

  3. 2022年5月30日 · 第一種方法基本上模擬瞭如何使用高壓和高溫在地殼深處製造鑽石。 這種方法稱為 HTHP。 第二種稱為化學氣相沉積或 CVD 的方法涉及“將富含碳的氣體(如甲烷)的分子分解成碳和氫原子,然後將它們沉積在金剛石晶種上,以產生方形的板狀金剛石晶體 ”根據 GIA 官方教育網站。 與在地表深處需要數十億年才能形成的天然鑽石相比,實驗室製造的鑽石可能需要一個月左右的時間就能製成。

  4. 182 products. 18K White Gold Engagement Rings. 366 products. 18K Yellow Gold Engagement Rings. 359 products. 18K 玫瑰金. 444 products. 18K 白金. 853 products.

  5. Abalone來自任何種類的微小到巨大的海螺,以及海螺科的鹹水腹足類軟體動物。 通常,這些蝸牛是在冷水中發現的。 通常,Abalone 採集於南非、新西蘭、日本、北美和澳大利亞等地區,大約有 75,000 年的歷史。Abalone首飾在很程度上受到青睞,因為每件首飾都與眾不同,有各種形狀、樣式、形式 ...

  6. rosellejewelry.com › pages › roselle-jewelry-club-會員優惠Roselle Jewelry Club 會員優惠

    品牌聯盟優惠(快將推出). 基本會員 透過網頁註冊成為Roselle Jewelry Club基本會員,即享5優惠 積分當錢使 E-Shop/陳列室 消費每HK$1賺取1積分。. E-Shop/陳列室 每25分可當作現金HK$1使用 指定金額免運費 #香港/澳門免順豐運費服務(不含住宅之附加費) 指定推廣 ...

  1. 其他人也搜尋了