Table of properties


SLNameHardnessSpv.GravityStructureCleavageR.Index
1. Agate 7 2.60-2.65 Hexagonal None 1.54-1.55
2. Alexandrite 8.5 3.70-3.73 Orthorhombic Imperfect 1.744-1.755
3. Amber 2-2.5 1.05-1.25 Amorphous None 1.54
4. Amethyst Quartz 7 2.63-2.65 Hexagonal None 1.544-1.553
5. Aquamarine 7.5 2.67-2.71 Hexagonal None 1.577-1.583
6. Blue Sapphire 9 3.9 – 4.1 Trigonal None 1.76 – 1.77
7. Blood Stone 7 2.59 - 2.61 Trigonal None 1.53 – 1.54
8. Carnelian 6.50 – 7.00 2.59 - 2.61 Trigonal None 1.53 – 1.54
9. Cat’s Eye 3.5 2.60 – 2.7 Trigonal Fair 1.742 – 1.757
10. Citrine Quartz 7 2.65 Hexagonal None 1.544-1.553
11. Coral 3 2.6-2.7 Trigonal None 1.486-1.658
12. Diamond 10 3.47-3.55 Isometric Perfect 2.417-2419
13. Emerald 7.5 2.67-2.78 Hexagonal None 1.576-1.582
14. Garnet 7.25 3.60-3.80 Isometric Imperfect 1.730-1.815
15. Gomed 6.5 – 7.00 3.64 – 3.69 Isometric None 1.76 – 1.75
16. Jade (Jadeite) 6.5 3.30-3.36 Monoclinic Imperfect 1.654-1.667
17. Jasper Quartz 7 2.58-2.91 Hexagonal None About 1.54
18. Labradorite 6 2.69-2.70 Triclinic Perfect 1.560-1.568
19. Lapis Lazuli 6 2.4-2.9 Isometric None 1.490 -1.510
20. Moon stone 6 2.56-2.62 Monoclinic Perfect 1.520-1.525
21. Onyx 6.5 2.59 – 2.61 Trigonal None 1.53 -1.54
22. Opal 5.5 - 6.5 1.98-2.20 Amorphous None 1.44-1.46
23. Pearl 3 2.60-2.78 Micro Crystaline None 1.52-1.69
24. Peridot 6.5 3.27-3.36 Orthorhombic Imperfect 1.654-1.690
25. Ruby 9 3.96 – 4.01 Trigonal None 1.759 -1.779
26. Sapphire 9 3.99-4.00 Hexagonal None 1.766-1.774
27. SunStone 6 - 6.5 2.64 -2. 68 Triclinic 001 1.525 – 1.58
28. Tiger's Eye 7 2.64-2.71 Hexagonal None 1.544-1.553
29. Topaz 8 3.53-3.56 Orthorhombic Perfect 1.610-1.638
30. Tourmaline 7.5 3.02-3.26 Hexagonal None 1.616-1.652
31. Turquoise 6 2.60-2.80 Triclinic None 1.61-1.65
32. Y Sapphire 9 3.98 – 4.00 Trigonal None 1.76 – 1.77
33. Zircon 6.5-7.5 4.71 - 4.90 Tetragonal Imperfect 1.777-1.987