The mm tolerance is +/- 0.2 mm. The gemstones are graded primarily on the colour and cut. These have not been dyed or heated. Quality: AA. Size: 4 mm to 10 mm. Shape: Round. Weight Per Piece. Available in lots of 2 pieces and 10 pieces.
| Stone Size | 4 mm |
| Transparency | Transparent |
| Shape | Round |
| Gemstone Color | Purple |
| Gemstone Type | Amethyst |
| Cut Grade | Very Good |
| Color | Purple |
| Item Length | 5 mm |
| Gemstone Shape | Round |
| Item Depth | 2.5 mm |
| Gemstone Creation | Natural |
| Certification | Available on Request |
| Gemstone Treatment | Not Enhanced |
| Brand | GemsRainbowCo |
| Gemstone Form | Cut |
| Gemstone Clarity Grade | Slightly Included |
| Country/Region Of Manufacture | India |
| Wholesale | Yes |
| Item Width | 5 mm |
| Country Of Origin | Brazil |
| Natural/Lab-Created | Natural |
What stands out is the practical 04×06 to 13×18 mm size range here.