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Delivery time : 2 - 5 business days Est. Delivery date : Mar 15 - Mar 17, 2026
Tourmaline is the birtstone of October.
The name Tourmaline was derived from the Sinhalese word "Thuramali" or "Thoramalli" which means different colored gemstones. Tourmaline is a chemical combination of boron silicate with aluminium, iron, magnesium, sodium, lithium, or potassium. Tourmalines range in red, green, yellow, pink and blue the basic colors. The other varieties are indicolite, paraiba tourmalines, watermelon tourmalines, chrome tourmalines, bi- color tourmalines.
In a research article in Wikipedia explaining the variety of tourmalines sorts the tourmalines into 3 basic varieties - dravite the dark brown or vivid honey yellow, schorl is bluish or brownish black and elbaite is categorized as below
Red, Pinkish Red, and purple—rubellite
Dark black
Light blue to bluish green—indicolite
Green—verdelite
Colorless—achroite
gempiece.com has a wide range of natural tourmaline loose gemstones and also deals with custom jewelry for more than a decade. Please feel free to email us if you have any orders and we most warmly welcome you. We serve certificates from Gubelin, GIA- Gemological Institute of America, AIGS- Asian Institute of Gemological Sciences, Tokyo gem lab, GIT, GRS etc. The Hardness is 7.0 - 7.5, the specific gravity is 2.85 to 3.35 and the refractive Index : 1.614 to 1.666.
- Stock: In Stock
- SKU: GEM22092597
- Gem: C46
| Weight | 15.89 carats |
| Size | Mixed Lot |
| Shape | Mixed |
| Color | Half White |
| Pieces | 12 |
Available Options
- ✓ 14-Day Money-Back Guarantee
- ✓ Natural Gemstones Only
- ✓ Carefully Selected Quality
- ✓ Trusted Seller Since 2008
- ✓ Friendly English Customer Support
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✓ Secure Payments
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Bank Transfer, Crypto, Western Union
| Gemstone | |
| Refractive Index | 1.614 to 1.666 |
| Mohs Hardness | 7.5 |
| Specific Gravity | 2.85 to 3.35 |
| Material | Tourmaline |
| Birthstone Month | October |
Shipping Policy
Orders are normally processed and shipped within 24 hours after payment confirmation, excluding weekends and public holidays.
Shipping Methods
We offer the following reliable and trackable shipping options:
FedEx Express
- Fast and secure international courier service
- Online tracking available
- Estimated delivery time: 3 – 5 business days
- Shipping cost: US $75.00 (U.S. only)
- For other countries, please contact us for shipping rates
DHL Express
- Fast and secure international delivery
- Online tracking available
- Estimated delivery time: 3 – 5 business days
- Shipping cost: US $70.00 (U.S. only)
- For other countries, please contact us for shipping rates
EMS (Thai Express Mail Service)
- Reliable international postal express service
- Online tracking available
- Estimated delivery time: 3 – 5 business days
- Shipping cost: US $65.00 (U.S. only)
- For other countries, please contact us for shipping rates
Thai Air Mail
- Economical international shipping option
- Online tracking available
- Estimated delivery time: 2 – 5 weeks
- Shipping cost: US $10.00 worldwide
Customs & Import Duties
International shipments may be subject to customs duties, taxes, or import fees depending on the regulations of the destination country. These charges are determined by the local customs authorities and are the responsibility of the buyer.
We recommend checking with your local customs office for more information about potential charges before placing your order.
Once your order has been shipped, tracking information will be provided so you can monitor the delivery status of your shipment.
Return & Refund Policy
At Gempiece, we want you to shop with complete confidence. If you are not fully satisfied with your purchase, we offer a simple return policy for your peace of mind.
14-Day Inspection Period
You may examine your gemstone for up to 14 days from the date of receipt. If you are not satisfied for any reason, you may request a return within this inspection period.
Return Authorization
Please contact us before returning any item. Our team will provide the proper return instructions. Returns sent without prior authorization will not be eligible for a refund.
Once return authorization is provided, the item must be shipped back within the inspection period.
Return Conditions
- Items must be returned in their original condition
- Free from scratches, damage, blemishes, or alterations
- Include original packaging and accompanying documentation
Refunds & Replacements
- You may request either a full refund or a replacement
- Refunds are processed after the returned gemstone is received and inspected
- Shipping and handling charges are non-refundable
Return Shipping
Customers are responsible for return shipping costs. For security, we recommend using a trackable and insured courier service.
Our Guarantee
- 100% Money-Back Guarantee
- 14-Day Inspection Period
- No Restocking Fees
If you need assistance with a return, please contact us at support@gempiece.com. Our team will guide you through the return process.



