In general, red spinel is the most desirable, followed by fine cobalt- blue spinel, then by vibrant hot pink and vivid orange stones. Out of the Blue | Blue Cobalt Spinel from Mahenge, Tanzania Unheated Vietnamese Spinel 0.65 (PBS065) Spinel - Wikipedia 1.82Ct.Ravishing Color&Full Fire! From: A Bijoux. Sale Sold out. Feb 1, 2022. We obtained this piece on a recent visit to Vietnam, and this was the largest specimen on quality we saw there, decent sized specimen are just not often found. Marlow Post subject: Re: Luc Yen cobalt blue spinel. Any well-cut gem above one carat and especially two carats is . Beautiful gray spinel. 2.25ct Vietnam Spinel Cobalt Rough Specimen Crystal Raw Rough | Etsy Vietnam, is limited and sporadic. Vietnam Spinel - Pretty Little Gem Co., Ltd Any well-cut gem above one carat and especially two carats is collectible and exclusive. 0.90 Carat Radiant Cut Dark Teal Spinel from Mozambique. Cobalt spinel is the rarest form of spinel, found less than five locations world wide. GRS Alert: New spinel treatment discovered involving heat and cobalt ... Mahenge, Morogoro, Tanzania. Blue Oval Spinel - Pala International The lustrous (not seen clearly in the pics) crystals on this . It is a fine grade Spinel with low iron content. It is found in a single mine in Vietnam and is one of the few gems that occur naturally. New York earrings with cobalt blue spinel and red Burmese spinel, diamonds, white gold. 35mm x 35mm x 25mm. (BASEL, Switzerland) - For several months a supply of blue cobalt-bearing spinel has been appearing in the gem trade, including some stones of remarkable size - up to 40 carats - and quality. It is the most desirable color and is rarely found in today's market at affordable prices. Cobalt Spinel - 0,35 ct - GemStore24 | GemStones and Services Vibrant cobalt-blue spinel from Vietnam has a Fe/Co ratio of 10, 1236 lg/g Co, 2500 lg/g Ni,~1100 lg/g Cr, and~1000 lg/g Zn (Chauviré et al. Stockton, 1984; Delaunay, 2008 . Pin on Products Researchers Find World-Class Blue Spinel on Baffin Island in the ... Natural blue cobalt spinel has the same three bands but may also include a further two bands in the blue part of the spectrum. $99.99 + $8.00 shipping + $8.00 shipping + $8.00 shipping. $120.00. 12. From their electric hues, multi-generational gemstone supplier Rimsan did suspect that these crystals might be the extremely rare and coveted Cobalt Spinel rather than standard Blue Spinel.