ARRICRAFT Frosted Natural Black Silk Stone/Netstone Round Bead Strands, 8~8.5mm, Hole: 1mm, about 47pcs/strand, 15.5 inches(G-E334-8mm-25)
Price: US $12.29
Frosted Natural Black Silk Stone/Netstone Round Bead Strands Size: about 8~8.5mm diameter, hole: 1mm; about 47pcs/strand, 15.5 inches.
Size: about 8~8.5mm diameter, hole: 1mm; about 47pcs/strand, 15.5 inches.
Gemstone (also called gem, jewel, precious stone or semiprecious stone) is a general term for natural gemstones and manufactured stones.
Natural Gemstones are minerals or organic matters that are produced from natural, can be cut and polished for use as jewelry or other adornments. Most Gemstones are hard, durable, rare and have aesthetic value, include natural gemstones , natural jades and natural organic materials(such as pearl and amber).
Manufactured Stones are materials that are produced wholly or partly by hand for use as ornaments. Our Manufactured Stones include synthetic gemstones , assembled gemstones and imitation stones
Synthetic Gemstones are man-made crystals, non-crystalline solid or aggregates, which maybe with chemical, optical, and physical characteristics of its natural mineral counterpart.
Assembled Gemstones are made of two or more pieces of materials by artificial splicing, that give the impression of gems. The components may be natural or man-made materials.
Imitation Stones are gemstones or other materials used to imitate the look and color of a kind of stone but possess neither their chemical nor physical characteristics.
Synthetic Turquoise Beads
Assembled Synthetic Charoite and Pyrite Beads
Imitation Larimar Beads
Except for cutting and polishing, gemstones are often treated to enhance the color, luster, clarity, optical characteristics, durability or usability of the stone. Color treatment of our gems is divided into Dyed, Dyed & Heated and Electroplated.
Dyed & Heated: To improve or change gemstone color by heating and dying process, such as most Red Agate, Black Agate and Red Tiger Eye are dyed and heat-treated.
Dyed: color-causing substances (such as colored oils, dyes, etc.) into gemstone by chemical method to improve or change gemstone color. Dyed Jade is commonly treated in this manner.
Electroplated: surface of gemstone is covered with a thin film by plating to change its color or luster, such as Electroplated Quartz Crystal, Electroplated Lava Rock.
Gemstone Names is divided into classic name and trade name.
The Classic Name of Gems is a mineralogical, petrological, material and traditional gemological name of gem varieties. Most gemstone names are based on the mineral, such as Garnet, Turquoise, Lapis lazuli, Malachites, etc.
The Trade Name of Gems is another name widely used and generally recognized in gemstone trade, for example Larimar is the tradename for a rare blue variety of the silicate mineral pectolite.
five main criteria for gemstone product titles:
1.If it is a natural gemstone with natural color, it's title must contain the word "Natural".
2.If it is a natural gemstone but color was treated, it's title must contain the word "Natural" and "Dyed" or "Dyed & Heated " or "Electroplated".
3.If it is a synthetic gemstone, it's title must contain the word "Synthetic".
4.If it is a assembled gemstone, it's title must contain the word "Assembled".
5.If it is a imitation gemstone, it's title must contain the name of the original material and imitation stone.
Tips: if you want to purchase a natural gemstone with natural color, you can click attribute of "Natural" and "Undyed".
Natural gemstone or semi precious stone comes from mineral. Due to the naturality, the stones may have tiny flaws. Meanwhile, cutting or polishing also makes every piece of gemstone varying in size, especially when they are made of in different batches, but noting that the error for each bead does not less than 0.2mm of the described size, not more than 0.75mm of the described size , such as 8mm round beads, the beads size on a strand will be in size range of 7.8mm~ 8.75mm, some maybe 8mm, some maybe 8.2mm or 8.5mm. In fact, 8.5mm beads are not big different from 8mm when look by eye.
As the error range of beads size, the quantity may have few errors in the same length beads strands, error range of 1~3 beads.
for Example: 3 strand of 15 inch 6mm Natural Yellow Jade beads , beads quantity is 59pcs, 60pcs, 61 pcs, 62pcs
As shown: The bead size may vary in different batches.
Q: For natural color gemstones of the same grade, why some products our customers have received has a little different in it's color from the product picture?
A: This difference in color is based on the atomic structure of the stone, every gemstone has its own unique chemical and atomic structure, even the same named gemstone can occur in many different colors, especially in different lots.
Q: For natural dyed gemstones, why some products our customers have received has a little different in it's color from the product picture?
A: Because these beads are made in small batches, the dye color could be slightly different from one batch of beads to the next, and the main reason is that the density, color and texture characteristic of a natural stone will lead to different coloring effects, some are darker, some are lighter. But a big color difference is not allowed. We will try our best to supply gemstone products which are consistent with the pictures.
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ARRICRAFT Frosted Natural Black Silk Stone/Netstone Round Bead Strands, 8~8.5mm, Hole: 1mm, about 47pcs/strand, 15.5 inches
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