Natural Black Tourmaline Stone — 5.00 Carat (5.49 Ratti)
Photos: Check main, back, in-hand, and side photos for colour, polish, and height (**5 mm**).
What you are buying: Natural black tourmaline at an even 5.00 carat (about 5.49 ratti) — easy to compare with other “five carat class” stones. Oval Mixed Cut. Size about 12.5 × 9 × 5 mm: wide face with moderate crown — usually fine in normal ring settings. Ratna Gems lists this as natural tourmaline (schorl type). If testing paperwork is included with your shipment, read it for that provider’s conclusions.
Documentation: If a gem testing report is included with your order, it is the official source from that laboratory only. We do not reproduce your specific document here.
Colour: Ratna Gems specification: greenish black. Photos show this stone. Listing title uses “black tourmaline” for search.
Gem facts: Usually schorl. GIA: tourmaline about 7–7.5 Mohs.
Size: 12.5 × 9 × 5 mm — give these to your jeweler for prong or bezel planning.
| Detail | Value |
|---|---|
| Weight | 5.00 Carat (5.49 Ratti) |
| Size (L × W × H) | 12.5 × 9 × 5 mm |
| Colour (Ratna Gems specification) | Greenish Black |
| Shape / cut | Oval Mixed Cut |
| Transparency | Opaque (light does not pass through this stone) |
| Luster | Vitreous (glass-like shine, typical for natural tourmaline) |
| Chemical composition | Iron-rich tourmaline (schorl type) — complex boron aluminium silicate. Reference formula: NaFe²⁺₃Al₆(BO₃)₃Si₆O₁₈(OH)₄ |
| Stone type / variety | Natural Tourmaline — black tourmaline (schorl) |
| Hardness | 7.0 to 7.5 on Mohs scale (see GIA tourmaline overview) |
| Specific gravity (typical range, schorl) | About 3.06 to 3.25 |
| R.I. (reference range) | 1.61 to 1.65 — typical range for this material; confirm against any documentation supplied with your order. |
| Treatment | Un-Heated & Un-Treated |
| Indian / trade name | Vikrant Mani |
| Material (Ratna Gems listing) | Natural tourmaline (black tourmaline / schorl) — how we describe and sell this stone. Verify on any authentication paperwork included with your purchase. |
Why people buy black tourmaline
Strong look in gold or silver, and 5 carat is a simple mental benchmark when shopping.
Astrology and belief (read this)
Not Navratna, not a classical Neelam stand-in. For jewelry or belief — no promised outcomes. Ask your astrologer for personal advice.
Is this stone right for you?
Choose this for a mid-weight natural black tourmaline at a round 5.00 carat with balanced proportions.
Simple care
- Lukewarm water, mild soap, soft brush; rinse and dry.
- Avoid chemicals and sudden hot–cold.
- Store away from softer gems.
Collection: Tourmaline Stone. Guide: Black Tourmaline complete guide.
