![[12563483 Listed] Tanzania Windsor Sapphire 1.137ct Loose Gemstone](http://store.karatz.jp/cdn/shop/files/P7020342_d2bfe9e6-e094-49cd-94c0-2934f1a81d60_1.jpg?v=1783169830&width=3015)



















[12563483 Listed] Tanzania Windsor Sapphire 1.137ct Loose Gemstone
Sapphire, a well-known gemstone. Mineralogically, it is the same corundum as ruby, but all corundum that is not red is called sapphire. It is also known for its diverse color variations, including blue, pink, yellow, and green. This is a sapphire from Winza, Tanzania. Winza sapphires are not widely circulated in the market and are one of the origins known among gemstone collectors. Tanzania is also known as one of the world's leading gemstone-producing countries, producing many beautiful gemstones such as spinel and tanzanite, and also produces attractive sapphire crystals.
This is a Winza sapphire with a reddish-brown color and good transparency. An appraisal certificate is included.
・Type: Loose stone (natural stone)
・Stone name: Tanzanian Winza Sapphire
・Weight: 1.137ct
・Size: 6.7 x 5.2 mm
・Shape: Oval cut
・Scratches/Chips: S
・Inclusions: S
・Remarks: Usually, heating is performed.
*Generally, sapphire is a gemstone that has been heated, but this product has not been definitively identified as heated in standard microscopic examinations. Advanced examination by an appraisal institution is required to definitively determine heating or non-heating.
・Accessories: Appraisal certificate (JTL (Jewel Trading Laboratory)), loose stone case (clear zippered case if it doesn't fit)
▷Jewelry customization available If you would like jewelry customization, please order with the desired setting from the link below. ・【Choose from stones】Simple Order
・【Choose from stones】Semi-Order
*If you would like an image of the stone on a setting, want to consult about a full custom order, or have any other questions, please feel free to contact us here.
*Rough stones are not supported. Also, some stones may not be supported.
※ While we strive to ensure that the photos show the same color as the actual product, due to the lighting conditions during shooting and your monitor environment, the actual product may appear slightly different. Also, some photos may have been taken using a penlight.
※ For products with UV fluorescence photos, we use a 365nm black light. If you use a light with a different wavelength (e.g., around 395nm), the fluorescence may appear weak or be difficult to confirm. The black light we use is here.
※ For scratches, chips, treatments, and inclusions, please see here.
※ For other frequently asked questions, please see here.
karatz_item_id: 12563483
This is a Winza sapphire with a reddish-brown color and good transparency. An appraisal certificate is included.
・Type: Loose stone (natural stone)
・Stone name: Tanzanian Winza Sapphire
・Weight: 1.137ct
・Size: 6.7 x 5.2 mm
・Shape: Oval cut
・Scratches/Chips: S
・Inclusions: S
・Remarks: Usually, heating is performed.
*Generally, sapphire is a gemstone that has been heated, but this product has not been definitively identified as heated in standard microscopic examinations. Advanced examination by an appraisal institution is required to definitively determine heating or non-heating.
・Accessories: Appraisal certificate (JTL (Jewel Trading Laboratory)), loose stone case (clear zippered case if it doesn't fit)
▷Jewelry customization available If you would like jewelry customization, please order with the desired setting from the link below. ・【Choose from stones】Simple Order
・【Choose from stones】Semi-Order
*If you would like an image of the stone on a setting, want to consult about a full custom order, or have any other questions, please feel free to contact us here.
*Rough stones are not supported. Also, some stones may not be supported.
※ While we strive to ensure that the photos show the same color as the actual product, due to the lighting conditions during shooting and your monitor environment, the actual product may appear slightly different. Also, some photos may have been taken using a penlight.
※ For products with UV fluorescence photos, we use a 365nm black light. If you use a light with a different wavelength (e.g., around 395nm), the fluorescence may appear weak or be difficult to confirm. The black light we use is here.
※ For scratches, chips, treatments, and inclusions, please see here.
※ For other frequently asked questions, please see here.
karatz_item_id: 12563483
Choose options
![[12563483 Listed] Tanzania Windsor Sapphire 1.137ct Loose Gemstone](http://store.karatz.jp/cdn/shop/files/P7020342_d2bfe9e6-e094-49cd-94c0-2934f1a81d60_1.jpg?v=1783169830&width=3015)



















[12563483 Listed] Tanzania Windsor Sapphire 1.137ct Loose Gemstone
Sale price¥49,800
Regular price



![[Restock on June 27th at 10 PM] Authentic Gemstone Encyclopedia 3D Stickers Vol. 1: The Big Five Gems](http://store.karatz.jp/cdn/shop/files/IMG_3658.jpg?v=1781061036&width=3384)
![[Sale begins 7/XX 10 PM JST] Limited 1 Set: Treated Diamond Set (approx. 1.2mm x 11 stones, 0.086ct) [Bulk purchase discount available]](http://store.karatz.jp/cdn/shop/files/S__244523010.jpg?v=1783039415&width=1477)
![[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/Gemini_Generated_Image_2cwd9n2cwd9n2cwd.png?v=1783069206&width=2048)
![[On sale March 7th at 10 PM] [Limited Stock] World Heritage Sigiriya Gemstone Painting & 3+ Sri Lankan Gemstones Support Set (Total Value Approximately ¥50,000) Purchased Directly from a Sri Lankan Workshop [Multiple Purchase Discounts Available]](http://store.karatz.jp/cdn/shop/files/Gemini_Generated_Image_7tlrn17tlrn17tlr.png?v=1772611047&width=2080)
![[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_7372b521-c1f6-4b48-8378-4ef004170822.png?v=1782796302&width=3000)
![[On sale July 4th at 10 PM] "Hong Kong Procurement - Limited to 24 Stones" Vibrant Lazurite Loose Stones from Pakistan "Bulk Purchase Discount Available"](http://store.karatz.jp/cdn/shop/files/P1010671_e5c5bd0f-9b6d-40cf-90e8-d1209b6519d6.jpg?v=1782876066&width=4000)

![[Sale 6/] 10:00 PM - Limited 11 Stones - Sri Lankan Pink Sapphire (Emerald Cut) Average 0.73ct (Multiple Purchase Discount Available)](http://store.karatz.jp/cdn/shop/files/P1010204_800476e9-3987-42e0-833b-3b54f7c615fd.jpg?v=1782733799&width=4000)
![[On sale May 10th, 10 PM JST] 6 Limited Pieces - Brazilian Mica in Rose Quartz (One stone), Multiple Purchase Discount Available](http://store.karatz.jp/cdn/shop/files/P5070688.jpg?v=1778245850&width=4000)


















![[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)