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  1. 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.

  2. 2019年10月26日 · 10分鐘讓你全面了解akoya天女珍珠(附珍珠賣家騙術揭露). 近年來日本akoya珍珠風靡全國,無論網店還是實體店的珍珠消費者,無一不愛日本akoya珍珠。. akoya珍珠因其靚麗的光澤,豐富的色彩,素有“小燈泡”的美譽,代表了東方女性之美。. 作為當今珍珠資深玩 ...

    • 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...

  3. 2019年10月26日 · 10分鐘讓你全面承知akoya天女珍珠(附珍珠賣家騙術揭露). 今年未来日本akoya珍珠風を飾る全國,無論網店還是實體店的珍珠消費者,無一不愛日本akoya珍珠。. 東方女性之美。. 作為當今珍珠資深玩家の“標配”,絕大多數消費者必擁有一條“天女”,或は準備 ...

  4. 2022年8月2日 · 讓我們仔細看看影響鑽石切工質量的兩個因素,鑽石的台面和深度。它們都有助於定義鑽石的物理形狀並有助於其閃耀,創造出我們都喜歡的令人眼花繚亂的外觀

  5. 2019年10月26日 · 天女,由日本真珠科學研究所命name,代表了白color系akoya珍珠中的卓越product質。 日本真珠科學研究所所長小松博2001年發現,지금珍珠專用鑑determined 儀器的觀測下,可以看到에서 優質akoya珍珠下半球會現3種干涉color,即“極光效應”。 具備了“極光效應”的akoya珍珠且直徑에서 6mm以上的,即命name為“極光效應”,一般簡稱為“천녀”. 關於珠層: 천녀의 標準為0.4mm,0.4mm以下는 不可評層為天女입니다. 很多賣家宣稱,珍珠層越厚珍珠光澤越美,很多買家也深以為然。 然而事實並不如此。 珠層並不越厚光澤越好,珠層厚島與光澤、瑕疵沒有直接聯繫。 決定珍珠光澤 는 是珍珠質單層結晶層 의 간격을 두고 排列疊加是否平整緊密.

  6. 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。Abalone首飾在很大程度上受到青睞,因為每件首飾都與眾不同,有各種形狀、樣式、形式 ...

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