This collection presents mostly « rare gems » or « collector gems », more often not used in jewellery because of rarity or hardness. Rarity is due to the quantity available, or a rare color, source or inclusion, or the difficulty to cut the rough into a faceted gem. Microphotographies are taken with an old Olympus microscope and an iphone. These gems are not for sale, but some extra specimens may be available. The collection is visible but stored in a specific location, so please contact me for an appointment.
For a long time Spinel was confused for ruby and sapphiresas the famous Black Prince Ruby. One of the famous source is Mogok and the rarest are the cobalt blue spinels from Luc Yeh mine in Vietnam.
A dark opaque purple spinel from Sri Lanka, presenting a rare multi-star asterism with three 6stars and two 4stars.
A rare gahnite from Kaduna state, Nigeria. Gahnite is the rarer member of spinel group, zinc rich. Usually very dark and included. Colour and clarity are specially fine. Color has more petrol blue hues, hard to capture.