ジュエリー用ルーペの倍率について, 大きければ大きいほど良いと考える人もいます, 実際にはそうではありません, レンズ製造の都合上, それは超えます 10 光学品質と明確な絞りを保証できます (拡大鏡の有効口径は16-20mmです。) 適切な) とても難しいです; 第二に, […]
著者アーカイブ: kingjy
さらに重要なことです: 人工の赤とサファイアを白い紙の上に置くか、白い容器に入れた水の中に入れて観察します。. カラーバンドまたは成長線はほとんどが湾曲していて湾曲しています, 天然物の六角形の成長線はわずかに湾曲していますが、. リボンはまっすぐです. 加えて, the fluorescence of artificial rubies is stronger […]
But their chemical composition and physical properties are very different. 例えば, emerald has a hardness of 7.5-8, while fluorite has a hardness of 4; emeralds have a density of about 2.7g/cm3, while fluorite (3.18g) /cm3), トルマリン (3.05g / cm3) そしてエメラルド (3.33g / cm3) have higher densities. In the indoor test with tribromomethane, only emeralds floated up, そして […]
天然エメラルドは大きく2種類に分けられます: (1) アメリカンタイプ: コロンビア産のエメラルドも含まれています, ブラジルと米国. 屈折率が低いのが特徴です, 比重が小さい, 紫外線 (長波) 放射線と蛍光, チャールズフィルターで観察すると色が赤くなります. (2) アフリカ系: ジンバブエ産のエメラルド, 南 […]
(1) タイプとサイズの選択について. 一般的に言えば, 鶏の心臓, 垂れ胆と観音は女性が着用するのに適しています; 弥勒仏は男性が着用するのに適しています, しかし例外もあります. 例えば, 男は大きなチキンハートが好き, 垂れ下がった胆嚢と大きな観音, and it is not enough […]
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“This is my first bracelet ever, so I couldnt buy anything too expensive. Bought this a few days ago, overall pretty satisfied. Thanks ChainsHouse Sizing: 私は持っています 6.6 inch wrist and I bought the 7.5 inch one, there is about enough space to fit one or two fingers so its not too tight. しかし […]
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“As soon as I took it out of the packaging to inspect it and try it on, the little crystals began falling off. I had it out of the box for maybe 2 minutes and already 6 crystals have fallen off. I can’t gift this garbage to my mother for Christmas, so looks like I […]
What Type Of Gold Does Blue Nile Use For Ring Heads? For yellow gold and rose gold settings, Blue Nile uses platinum ring heads to secure center diamonds. All designs in 14k white gold use 14k white gold ring heads which have the strength and durability required to keep a center stone safe. 14k white […]
What Is Yellow Gold? A mixture of silver, 銅, 純金 (and a trace of zinc) gives yellow gold jewelry its rich shine. Although the percentages of each metal used to create the alloy vary, all formulas starts with 75% pure gold for 18k gold and 58.3% for 14k gold. The result gives off a […]
Blue Nile Gold We carry jewelry that’s crafted in both 18k and 14k gold. Our 18k gold is an alloy of 75% gold with other metals to make it strong enough for everyday wear, and our 14k gold is an alloy of 58.3% gold and other metals. The minimum karat that is allowed to be […]