Certified Natural Green Onyx Stone (Onex Ratna) 5.45 Carat Octagon Cut
This Certified Natural Green Onyx Stone (Onex Ratna) 5.45 Carat (5.99 Ratti) Octagon Cut is a natural green onyx gemstone with 11.9mm x 9.5mm x 5.6mm dimensions, octagon cut, polished surface, and chalcedony-family appearance. This Onex is Un-Heated and Un-Treated with natural colour and is supplied with an ISO-accredited laboratory report, making it suitable as a loose gemstone for ring setting, pendant setting, jewellery use, collection, gifting, and traditional Onex use.
Onyx belongs to the chalcedony family, a microcrystalline quartz material. In strict gemology, true onyx is known for straight parallel banding, while in modern jewellery trade, Green Onyx is commonly used for green chalcedony material. Colour, transparency, polish, and internal texture can vary from one product to another, so this stone should be selected by reviewing its actual photos and video.
Gemstone Details
| Gemstone | Green Onyx Stone |
|---|---|
| Other Names | Onex Ratna, Onex Stone |
| Mineral Family | Chalcedony / microcrystalline quartz |
| Conclusion | Natural Green Onyx |
| Weight | 5.45 Carat (5.99 Ratti) |
| Dimensions | 11.9mm x 9.5mm x 5.6mm |
| Shape / Cut | Octagon Cut |
| Colour | Green natural colour |
| Treatment | Un-Heated and Un-Treated |
| Report | ISO-accredited laboratory report included |
| Traditional Use | Budh / Mercury-related use as a Panna substitute when advised |
| Hardness | 6.5-7 on the Mohs Scale |
| Refractive Index | 1.53-1.54 |
| Specific Gravity | 2.55-2.70 |
Appearance and Use
This Green Onyx has a polished octagon cut with a green appearance. Depending on the individual stone and lighting, Green Onyx may show soft translucency, cloudy internal texture, slight colour zoning, tiny inclusions, facet reflections, or small natural-looking polish marks. These details should be checked from the actual product photos and video.
In Indian gemstone searches, Green Onyx is also called Onex Ratna and is often selected as an affordable traditional substitute for Panna (Emerald) in Budh/Mercury-related use. Buyers commonly search Onex for traditional associations with communication, intellect, focus, study, business, confidence, and decision-making, but these should be understood as belief-based associations rather than guaranteed effects. It is not the same gemstone as Emerald, so astrological selection should be made according to proper guidance.
For more options, visit our Onyx Stones category. To understand Onex Ratna, Green Onyx, price, identification, and buying points in more detail, read our Onyx Stone buying guide.
Care Instructions
- Clean gently with mild soap and lukewarm water, then dry with a soft cloth.
- Store separately so the polished stone does not rub against harder gemstones such as ruby, sapphire, diamond, or topaz.
- Avoid harsh chemicals, bleach, ammonia, perfume, cosmetics, sharp impact, temperature extremes, prolonged soaking, steam cleaning, and ultrasonic cleaning when treatment status is unknown.
- For regular ring wear, use a protective setting and remove the ring during heavy work.
