

















Australian boulder opal 13.190ct loose
Opal is a gemstone characterized by shimmering rainbow-colored light. There are several types of opal, and among them, boulder opal refers to opal with the host rock still attached. Some of the photos were taken using penlights. This is a boulder opal with a play of colors of red, yellow, and green. It's from Australia.
・Type: Loose (natural stone)
・Stone name: Boulder Opal
・Weight: 13.190ct
・Scratch/chip: S
・Inclusion: -
·remarks:---
・Accessories: Karatz quality guarantee card, case
▷For more information about Boulder Opal
A thorough explanation of the unique charm of boulder opal!
*We try to make sure that the colors in the photos are the same as the real thing, but the colors may look slightly different from the real thing depending on the lighting at the time of shooting and the monitor environment you are using. In addition, some photos may be taken using penlights.
*Click here for information on scratches, chips, treatments, and inclusions.
*For other frequently asked questions, please click here .
karatz_item_id: 12543063
・Type: Loose (natural stone)
・Stone name: Boulder Opal
・Weight: 13.190ct
・Scratch/chip: S
・Inclusion: -
·remarks:---
・Accessories: Karatz quality guarantee card, case
▷For more information about Boulder Opal
A thorough explanation of the unique charm of boulder opal!
*We try to make sure that the colors in the photos are the same as the real thing, but the colors may look slightly different from the real thing depending on the lighting at the time of shooting and the monitor environment you are using. In addition, some photos may be taken using penlights.
*Click here for information on scratches, chips, treatments, and inclusions.
*For other frequently asked questions, please click here .
karatz_item_id: 12543063
Choose options


















Australian boulder opal 13.190ct loose
Sale price¥18,800
Regular price



![[On Sale November 1st at 10 PM] [Limited to 15 Stones] Rare Stone Gacha! 💎 Brazilian Paraiba Tourmaline 0.240ct, Taaffeite, Shinsha, Benitoite, and More [Multiple Purchase Discounts Available]](http://store.karatz.jp/cdn/shop/files/collage_ea7879a8-bd74-4c84-a6b6-8e0bf18a5631.png?v=1761893443&width=2250)
![[On Sale November 1st at 10 PM] [Limited to 11 Stones] Oregon Sunstone Gacha Loose Stone (Average 1.60ct) Including Koshu Precious Stones Cut Plus Three and Vortex Cut [Multiple Purchase Discounts Available]](http://store.karatz.jp/cdn/shop/files/collage_7ec015a3-593d-494a-ba24-c8947b0ccec9.png?v=1761877768&width=2250)
![[On sale November 1st at 10 PM] [Limited to 12 stones] Brazilian Indigolite Tourmaline Gacha Loose Stone (4x3mm, Oval Cut) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/PA230072.jpg?v=1761804822&width=4000)
![[On sale November 1st at 10 PM] [Limited to 8 stones] Brazilian Paraiba Tourmaline (cabochon cut, approximately 2.2mm) 1 loose stone [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/PA230107_833f3433-6ac0-4cc6-8180-14ab57aefba8.jpg?v=1761807158&width=3241)
![[11/1 22:00 Sale] Zimbabwean Bicolor Euclase 0.398ct Loose Stone](http://store.karatz.jp/cdn/shop/files/PA231482.jpg?v=1761949622&width=4000)
![[11/1 22:00 Sale] Brazilian Pink Tourmaline 1.515ct Loose Stone](http://store.karatz.jp/cdn/shop/files/PA211340_46dace1d-0c9c-40bd-992f-b5708e55ed37.jpg?v=1761836204&width=3534)
![[11/1 22:00 Sale] Tanzanian Wurtzite 0.567ct Loose Stone, Japan-Germany Qualification](http://store.karatz.jp/cdn/shop/files/P6090286_a2d95ff8-3c7f-450d-9750-032b2cbbfc08.jpg?v=1761904526&width=3468)
![[11/1 22:00 Sale] Sri Lankan saffron 0.738ct loose stone](http://store.karatz.jp/cdn/shop/files/PA300142_50c7e269-4b63-4891-aa5e-4687c847fb27.jpg?v=1761917733&width=2865)
![[11/1 22:00 Sale] Mozambique Rhodolite Garnet 0.835ct Loose Stone](http://store.karatz.jp/cdn/shop/files/PA241954_4a644555-7ab2-4634-8dc1-263353ee619d.jpg?v=1761949262&width=2850)



















