16 December 2025 | 08:00 | Lots: 846
Blue tourmalines, some copper-bearing, 3.83ct
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Lot 640
Full Lot Description
One weight 0.46ct and measuring 6.8 by 4.8 by 2.3mm, tested as copper-bearing tourmaline.
This tourmaline has been identified by our in-house gemmological team as “copper-bearing”. This opinion is based solely on Ultraviolet-Visible (UV-Vis) spectroscopic analysis, which identified the presence of copper (Cu) as a significant contributing factor to the stone's colour.
The remaining tourmalines, untested for copper content, total weight 3.37ct.
Seven in total, all pear-shape.
Carat Weight: 3.83ct
Gemstone: Tourmaline
Postage: Postable
Total carat weight: 3.83ct
Weight: 0.77
Total lot weight: 10
Condition Report
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- Tourmalines pale blue hue, fairly saturated, with moderate clarity and typical inclusions. Tourmalines in fair condition with some abrasions, chips, and nibbles to the girdle, facets, and facet edges. Some internal fractures.
- Due to the amount of items in this lot we cannot give an in-depth condition report.
- Condition varies.
- Some gemstones possibly paste, composite, treated or synthetic.
- The term “copper-bearing” - Copper was detected as a colouring element in this stone but does not indicate that it is the dominant or exclusive colour-causing agent, nor does it imply any specific geographic origin or tourmaline variety/species. In line with GIA and LMHC terminology.
- Please see the Important Notices for Purchasers for coloured gemstones.
- Condition reports are offered as a guide only and we highly recommend inspecting any lot to satisfy yourself as to its condition.
- Free virtual viewings are available by appointment.
- For any questions you may have on this lot of to book a virtual viewing, please do not hesitate to contact jewellery@fellows.co.uk
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