





























Loose Columbian Pyrite in Emerald 3.346 ct
It is said that the beautiful green color of emeralds varies depending on their origin. This particular emerald from Colombia is known for its especially deep green hue. Emeralds are generally stones with many inclusions, so it is common to treat them with oil to make these inclusions less noticeable. Please enjoy its elegant green color. This is an emerald with pyrite inclusions.
This is a pyrite and mica-included emerald from the Chivor mine in Colombia. The Chivor mine is known for producing beautiful, bluish emeralds. This particular loose stone features pyrite within the emerald. The addition of pyrite, with its metallic luster, to the emerald creates a look distinct from a pure emerald. It's a stone that offers a unique mineralogical character.
Such pyrite-included emeralds are known not only for their interesting appearance but also for the difficulty of their polishing. This is because emerald and pyrite have different hardnesses, with emerald being harder. During regular polishing, the pyrite parts tend to become recessed. Therefore, these stones are carefully cut over a long period of time locally in Colombia. Because different minerals coexist within a single stone, high skill and caution are required in the finishing process.
・Type: Loose Stone (Natural Stone)
・Stone Name: Colombian Pyrite-in-Emerald (Colombian Emerald)
・Weight: 3.346 ct
・Size: 21.6 x 9.1 mm
・Scratches/Chips: S-A+
・Inclusions: -
・Remarks: Impregnation with a transparent substance has been performed.
*Emeralds are generally gemstones that have undergone impregnation with a transparent substance.
・Accessories: Karatz quality guarantee, loose stone case (if it doesn't fit, a clear zip-lock case)
※ We strive to ensure that the photos show the same colors as the actual product, but due to lighting conditions during photography, monitor settings, and other factors, the actual product may appear slightly different. Also, some photos may have been taken using a penlight.
※ For details on scratches/chips, treatments, and inclusions, please refer here.
※ For other frequently asked questions, please refer here.
karatz_item_id: 12562758
Choose options




![[On sale May 23rd at 10 PM] "Limited 9 Stones - Shinjuku Pop-Up Celebration" All stones with Central Gem Laboratory sorting (3.0-3.5mm, VS-SI clarity) "Multiple purchase discount available"](http://store.karatz.jp/cdn/shop/files/collage_68f24c59-ad99-43b4-bb8f-f7560aa7f246.png?v=1792134404&width=2000)
![[Available 10/12 at 10 PM] 《Limited to 1 stone》 FANCY LIGHT PINK 2.9mm/0.092ct FANCY Color Pink Diamond (Sorting report included) 《Multi-buy discount available》](http://store.karatz.jp/cdn/shop/files/2026-10-1615.44.21.png?v=1792133085&width=1249)

![[10/22, 10:00 PM Sale] <limited to stones> Sky Blue Topaz (Round approx. 8mm, only one stone is approx. 10mm) <multiple purchase discount available></multiple></limited>](http://store.karatz.jp/cdn/shop/files/PA050720_0c803cec-809e-4351-8ed4-19b5405d1e2a.jpg?v=1791592314&width=4000)




![[Item 12564325] Kenya Gold Sheen Sapphire (Star Sapphire) 0.477ct Loose Gemstone](http://store.karatz.jp/cdn/shop/files/P9098894_9e71d12f-afda-46cb-99c2-1c15650319a3.jpg?v=1791805575&width=3070)

![[Deadline: Sat, Oct 3, 10 AM: Lottery Sale ①_07] Internally Flawless Diamond (H&C) 0.320ct Loose Stone (D, IF, 3Excellent H&C) GIA & CGL Certified](http://store.karatz.jp/cdn/shop/files/collage_c5a7826b-52bb-4208-b21b-dd0864ce4929.png?v=1790579363&width=2000)
![[10/3 (Sat) 10:00 AM Deadline: Lottery Sale ①_02] Diamond (H&C) 4.3mm/0.318ct Loose Stone (H, SI-1, 3Excellent H&C) with CGL Certificate & Sarine Light Report](http://store.karatz.jp/cdn/shop/files/collage_7de5fb5b-0545-4b3f-ad81-43e23de482f7.png?v=1790579155&width=2000)












![[Jeweler's tools] 4-piece set including loupe (10x magnification), tweezers, and 2 loose stones](http://store.karatz.jp/cdn/shop/files/P4130575.jpg?v=1776126091&width=4000)


![[Jeweler's Tools] Color change penlight loose set](http://store.karatz.jp/cdn/shop/files/P1010673_2976de1d-08ce-4d92-94af-524da4485c99.jpg?v=1725605083&width=4000)