Trapiche emeralds are a rare variety of emerald, named after a six-spoked cogwheel used in sugar cane mills (trapiche de cańa azucar in Spanish). During the emerald crystal's formation, black carbon impurities enter the emerald, forming a six point pattern as they fill in the gaps between growth sectors of the hexagonal crystal structure. The earliest mention of trapiche emeralds dates back to 1879, when French mineralogist Emile Bertrand described a trapiche emerald at the meeting of the Société Géologique de France. The majority of trapiche emeralds are found in Colombia, but they are also mined in Brazil and Madagascar. Trapiche emeralds in finer qualities are cherished by collectors due to their rarity and beauty.
This magnificent three-stone ring features a very rare 5.42 ct. natural Colombian trapiche emerald flanked by gem quality trillion cut diamonds in a custom made platinum setting with 18K yellow gold talon prongs! Stamped "PLAT 18K".
Accompanied by GRS Gemstone Report # GRS2017-084099 stating "Insignificant Oil" (Very Rare!)
ITEM DETAILS
Metal: Platinum & 18K Gold
Finish: Bright Polish
Ring Size: 6.5
Hallmarks: "PLAT 18K"
Gross Weight: 7.4 grams (4.8 dwts)
GEMSTONE DETAILS
Quantity: 1
Gem Variety: Trapiche Emerald
Gem Species: Beryl
Nature: Natural
Shape: Round
Cutting Style: Cabochon
Hue: Green with Black Matrix
Tone: Medium Dark (GIA 6)
Saturation: Strong (GIA 5)
Symmetry: Very Good
Brilliancy: 85%
Clarity: SI2 (GIA Type III)
Transparency: Translucent
Treatments: Insignificant Oil
Measurements: 10.11 x 9.88 x 6.61mm
Carat Weight: 5.42 ct.
GRS Report #: GRS2017-084099
DIAMOND DETAILS
Quantity: 2
Cut: Trillion Cut
Color: D
Clarity: VS1-VS2
Measurements: 5.35 x 5.28 x 2.63mm, 5.30 x 5.11 2.95mm
Total Carat Weight: 1.00 ct.