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https://www.gemoptions.com/gemstone_grades/pagetwo.htm
Gemstone Grade Chart: Gemstone: Grade: Description (industry standards) AGTA Codes: Alexandrite: A: Light green to greenish blue, included, weak to low color change. O: Alexandrite: AA: Green to …
https://discover.hubpages.com/style/Gold-Grade
Sep 16, 2010 · 14 karat (14k) gold (.583) is the most common grade of gold used in North America. This is considerably harder than the most common UK gold grade, which is 9 karat (9k) gold (.375). There …
https://www.titaniumstyle.com/pr-metals.htm
The exceptional value and charm of our wedding rings comes from them being handcrafted from the strongest grades of titanium and precious metals-both of extraordinary purity. All of our rings are hallmarked (stamped with their titanium grade …
https://jewelrycabs.com/stones/jewelry-grade-lapidary-slabs/
Jewelry Grade Lapidary Slabs. These slabs are meant to be used for making stones for jewelry work but your creative nature will guide you in the use of those you purchase. I wonder if any have ever gone …
https://ezinearticles.com/?Jewelry-Reviews---What-Are-the-Grades-of-Silver?&id=4602790
Although there are variants, the main grades of silver are pure, sterling, and parts. Pure silver is 99.5% silver or above; or 995-1000 parts out of 1000 of silver. It is typically only the component of fine silver jewelry. …
https://www.cooksongold.com/blog/jewellery-tips/a-jewellers-guide-to-saw-blades
Grade 4: 0.38: 0.8: 130: 15: 0.8: 1.0 – 1.3: Grade 3: 0.36: 0.74: 130: 16: 0.8: 0.9 – 1.2: Grade 2: 0.34: 0.7: 130: 17.5: 0.7: 0.9 – 1.1: Grade 1: 0.3: 0.63: 130: 19: 0.7: 0.8 – 1.0: Grade 0 (1/0) 0.28: 0.58: 130: 20.5: 0.6: 0.6 – 0.95: Grade 2/0: 0.26: 0.52: 130: 22: 0.55: 0.6 – 0.8: Grade 3/0: 0.24: 0.48: 130: 23.5: 0.5: 0.6 – 0.7: Grade 4/0: 0.22: 0.44: 130: 26.5: 0.5: 0.5 – 0.6: Grade 5/0: 0.2: 0.4: 130: 28: 0.4: 0.4 – 0.55: Grade …
https://www.firemountaingems.com/shop/gemstone-beads-grade_a
Bead, rhodolite garnet (natural), 2-2.5mm semi-round, A- grade, Mohs hardness 7 to 7-1/2. Sold per 15-1/2" to 16" strand. Bead, black onyx (dyed), 2mm round, A- grade, Mohs hardness 6-1/2 to 7. Sold per 15-1/2" to 16" strand. Bead, quartz crystal (natural), 8mm round, A- grade, …
http://www.gia.edu/opal-quality-factor
Common sizes for many of the opal cabochons set in jewelry are 6×4, 7×5, and 8×6 mm. The Fire of Australia, a large uncut opal, weighs 998 grams or just under 5,000 carats. South Australia is one of …
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