
























[Published 12562277] Brazilian Marcasite in Quartz Loose Stone 4.188ct
A unique gemstone with marcasite inclusions in quartz. The metallic-lustered crystals spread out like natural patterns, offering a different view with each piece. This is an in-quartz with the charm of a natural art piece.
・Type: Loose stone (natural stone)
・Stone name: Marcasite in Quartz
・Weight: 4.188ct
・Size: 12.0×9.6mm
・Shape: Oval cut
・Scratches/chips: A+
・Inclusions: None
・Remarks: ---
・Accessories: Karatz quality guarantee, loose stone case (zippered clear case if it doesn't fit)
※ We strive to ensure that the photos show the actual colors, but due to lighting conditions during shooting and your monitor environment, the actual product may appear slightly different. Also, some photos may be taken using a penlight.
※ For products with UV fluorescent photos, we use a 365nm wavelength blacklight. If you use a different wavelength light (e.g., around 395nm), the fluorescence may appear weak or be difficult to confirm. The blacklight we use is here.
※ For information on scratches, chips, treatments, and inclusions, please see here.
※ For other frequently asked questions, please see here.
karatz_item_id: 12562277
・Type: Loose stone (natural stone)
・Stone name: Marcasite in Quartz
・Weight: 4.188ct
・Size: 12.0×9.6mm
・Shape: Oval cut
・Scratches/chips: A+
・Inclusions: None
・Remarks: ---
・Accessories: Karatz quality guarantee, loose stone case (zippered clear case if it doesn't fit)
※ We strive to ensure that the photos show the actual colors, but due to lighting conditions during shooting and your monitor environment, the actual product may appear slightly different. Also, some photos may be taken using a penlight.
※ For products with UV fluorescent photos, we use a 365nm wavelength blacklight. If you use a different wavelength light (e.g., around 395nm), the fluorescence may appear weak or be difficult to confirm. The blacklight we use is here.
※ For information on scratches, chips, treatments, and inclusions, please see here.
※ For other frequently asked questions, please see here.
karatz_item_id: 12562277
Choose options

























[Published 12562277] Brazilian Marcasite in Quartz Loose Stone 4.188ct
Sale price¥12,800
Regular price



![[Use the #202509 Campaign] 2025 New Year's Lucky Bag 🎍 Gem Gacha Lucky Bag with 4 or more gemstones (worth ¥25,000) [Discount for bulk purchase of lucky bags]](http://store.karatz.jp/cdn/shop/files/gazou.png?v=1785994448&width=1254)
![Limited to 10 stones: Madagascar pink sapphire (heart-shaped, including padparadscha color, approximately 3 x 2.3 mm) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/collage_9109ca4b-cf51-4ed2-9859-1a3f6b317f8b.png?v=1787121427&width=2000)


![Limited to 10 stones: Madagascar pink sapphire (heart-shaped, including padparadscha color, approximately 3 x 2.3 mm) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/collage_e3bc2b9c-c542-42ee-9a4d-e3f647d927ae.png?v=1787118079&width=2000)
![[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/2026-08-2115.28.22.png?v=1787293728&width=1285)
![[On sale at 10 PM on 7/X] "Limited 10 Stones" Pink Diamond Gacha "Multiple Purchase Discount Available"](http://store.karatz.jp/cdn/shop/files/2026-08-2017.07.21.png?v=1787213265&width=1281)

![[6/ 10 PM JST Release] 《Limited to 11 Stones》Bicolor Gemstone Gacha featuring Paraiba Tourmaline and Euclase 《Bulk Purchase Discount Available》](http://store.karatz.jp/cdn/shop/files/collage_7b7dc323-95d7-4adf-b87d-7f158eb4b182.png?v=1787295459&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)
