4.63ct Paraiba Tourmaline and 2.10ctw Diamond 18KT White Gold Ring

Auction #1992 | Item #11

Current Bid: $7,500

Appraised Value: $44,000

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One electronically tested 18KT white gold ladies cast pariaba tourmaline and diamond ring with a bright finish. The featured paraiba tourmaline is set within a tiered diamond bezel, supported by a ribbed under gallery and diamond set shoulders, completed by a three millimeter wide band. Trademark is CJ. Identified with markings of "18K". Condition is new, good workmanship.


One prong set rectangular cushion mixed cut natural paraiba tourmaline, measuring 12.00 x 9.00 x 5.70mm, approximate weight of 4.63ct., clarity is moderately included, medium, very slightly grayish, very slightly greenish blue color, (GIA vslgB 5/3), cut is good. Transmitting light with no distortion, transparent. Naturally occurring internal & external characteristics are present.


This particular color combination is usually indicative of tourmaline from the state of Para¡ba, village of Sao Jose da Batalha in northeastern Brazil. However, the origin for this tourmaline is determined to be the African Continent. African Para¡ba color Tourmaline was first discovered in 2001 at the Edoukou Mine in Oyo Nigeria, close to the border of Benin and more recently in Zambezia, Mozambique. African Paraiba is believed to exist due to the continental drift theory. 200+ million years ago the earth's continents were joined together in one enormous super-continent called Pangaea. Compare the profile of western Africa and eastern South America; they fit together like pieces in a puzzle. This comparison suggests that they once belonged to a single landmass with similar geological conditions. The African tourmalines were created under the same conditions as the tourmalines from Para¡ba, before the continents drifted apart. The African Paraiba color tourmaline is mined in alluvial deposits, the Brazilian Paraiba is mined underground.


Seventy-Four prong set round brilliant cut diamonds, measuring 2.50 - 1.50 x 1.20mm (depth est.) approximate total weight of 74 Stones = 2.10ct. Graded in the setting.

Clarity          VS-1 to VS-2  

Color            G - H

SKU: 114826