弗石 水晶 - 高度: 20.39 mm - 宽度: 13.09 mm- 2.63 g - (1)

GeoChimes: Earth’s Exclusive Edition – Legacy: Dragon

- Dragon Garnet: 一种特定的罕见Tsavorite变种（亦称“ Neon Tsavorite”）来自 Merelani Hills。
- 这是一个用于切割或“cabing”的极佳投资级样本，适合由现代高端宝石工匠制作成天然珠宝。

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BASIC DESCRIPTION

专业级13.15克拉天然 Tsavorite Garnet原石，产自传说中的坦桑尼亚 Merelani Hills。此真实未抛光晶体以其标志性的强烈、鲜明的“森林绿”饱和度以及粉红到橙色的荧光而著称。

该晶体非常适合宝石切割师或收藏者，尤其是对特定产地矿物的收藏。该样本的一个显著特征是鲜明的粉红到橙色荧光，使其成为高需求的铬含量丰富的Tsavorite变种。

与冲积石不同，这种材料来自一个原始矿床。部分样本表面仍可能出现微小、真正的银灰色石墨夹杂物或残留物，成为地质“出生标记”，确认其来源于 Merelani 区域的特定石墨片岩层。

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LOT DETAILS

数量：1件（单一天然晶体）

Approx. Total Weight: 13.15 克拉

Approx. Dimensions: 20.39 x 13.09 x 8.29 毫米

颜色：饱和的“生动绿色”至祖母绿绿，长波UV下粉/橙色荧光。

净度：透明至半透明（对切割或标本等级有显著要求）。

处理：100% 天然，无加热，无处理。

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TECHNICAL DETAILS

Origin: Merelani Hills, Simanjiro District, Manyara Region, Tanzania.

Type: Natural Vanadium/Chromium Grossular Garnet (Tsavorite).

Chemical Classification: Ca3Al2(SiO4)3 (Calcium Aluminum Silicate).

Crystal System: Cubic (Isotropic).

Hardness: 7.0 – 7.5 on the Mohs scale.

Specific Gravity: 3.60 – 3.68.

Refractive Index: 1.734 – 1.744.

Other Optical Properties: Long-Wave UV 下呈现从轻到强的粉红/橙色荧光，证实其中含铬（Cr3+）以及钒（V3+），这是高铬 Merelani Tsavorite 的一个关键诊断特征。

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HISTORICAL CONTEXT

Tsavorite 的历史不是以世纪来衡量，而是以几十年来衡量，使其成为世界上“最年轻”的精英宝石之一。它的故事与传说中的苏格兰地质学家 Campbell Bridges 密不可分。

发现阶段（1961–1967）：Bridges 于1961年在津巴布韦首次发现绿色石榴石的踪迹，但政治不稳定使他受阻。他向北追踪地质结构进入坦桑尼亚，1967年在 Lemshuko 地区（靠近 Lelatema 山脉）终于发现了一个原始矿床。这是一次矿物学革命——此前世界上大多数石榴石都以红色或橙色为主。

与蒂芙尼公司（Tiffany & Co.）的联系：坦桑尼亚在1970年代国有化矿山后，Bridges 沿 Mozambique Belt 跨越边境进入肯尼亚。在那里，靠近 Tsavo 国家公园，他发现了改变历史的矿床。转折点发生在1974年。蒂芙尼公司时任总裁 Henry B. Platt 对这颗宝石的“野性”绿意着迷，将其命名为“Tsavorite”，并发起全球性的大规模宣传，称其为“比祖母绿稀有一千倍，却更具火彩”的宝石。

Merelani 的传承：尽管肯尼亚矿床定义了早期市场，坦桑尼亚的 Merelani Hills——原本以坦桑石而闻名——带来新的质量层级。Merelani 的石墨质片岩含有特定的钒与铬化学成分组合，导致出现独特的“霓虹”荧光和粉红到橙色的荧光，这是肯尼亚材料少见的特征。如今，Merelani Tsavorite 被收藏家视为“金标准”。虽然 Merelani 以坦桑石闻名，但它的 Tsavorite 矿区（尤其是 B、C 区块）的宝石常在亮度和“光芒”方面超过肯尼亚材料，原因在于钒与铬的独特化学平衡。

Mining Tradition：与大规模工业开采不同，这些宝石通常由与坦桑石矿区相同的巷道系统中的手工矿工带到地表，因此在母岩上的高质量 Tsavorite 越来越稀少且难以获取。

Scientific Significance：Merelani 材料在荧光方面的偶发性在地质学上被记录，这曾帮助宝石学家将坦桑尼亚原产地与通常对 Kenyan Tsavo 自然材料的惰性特征区分开来。

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GEOLOGICAL ORIGIN AND FORMATION

Merelani Tsavorite 的地质形成是 Mozambique 架构带内极端 metamorphism 的复杂叙事，该带是在大约 6-8 亿年前的泛非造山运动中形成的。宝石来自古老的沉积层，具体为在新元古代海床上沉积的富有机质的海泥和富碳酸盐的泥质。在东西冈瓦纳大陆碰撞过程中，这些沉积层经历高等级区域变质，温度介于 650°C 至 850°C，岩石压力为 6-9 千 bar。在这些深度，大约在地表下 20-30 公里处，原始矿物发生了完全的结构再结晶，将富钙铝前体转变为特定的 grossular 赭石，形成化学式 Ca3Al2(SiO4)3 的 Tsavorite。石榴石的空间分布严格限于方解石-矽酸岩与石墨片岩的接触区，化学梯度最有利于晶体生长。

鲜明的绿色来自晶格中的精确离子替代。在 Merelani 产区，三价铝离子被钒（V3+）和铬（Cr3+）取代。钒是主要着色剂，赋予深绿色，但 Merelani 地点在铬含量方面具有异常高的特点。这一特定化学比率是导致在长波紫外光下看到粉红至橙色荧光的驱动因素，是将这些坦桑尼亚石榴石与肯尼亚材料在颜色反应上区分开的诊断特征。微量元素的存在得益于母岩的地球化学特征，在初始沉积阶段有机物质集中了这些过渡金属。

主岩石中的石墨对在晶体形成过程中的低氧逸度起到了关键作用。这种还原环境对防止铁氧化至关重要，否则石头会呈现暗淡的棕色调。通过将铁夹在黄铁矿等硫化物中，石墨丰富的环境使钒和铬得以充分显色。此外，Merelani 区块的构造历史涉及显著的热液活动，热、矿物质富集的流体通过片岩的断层流动，促进了着色离子的运输，并允许在局部的囊簇或结节中长出石榴石，常与坦桑石、透辉石和方解石等矿物共生。

由于这些宝石来自原始矿床，它们仍镶嵌在原始变质基质中，而非经由冲积系统被滚动搬运。晶体通常以圆形结节或高度畸变的碎片形式出现，这是山脉形成过程中的强烈构造剪切和拉伸力的直接结果。粗石表面的银白色石墨星形条纹和白色方解石的痕迹，是这一高压诞生的直接矿物学证据。这种缺乏二次搬运的状态，保留了珍稀的、按产地特异性的 Merelani 材料所定义的真实地质表面纹理和内部应力模式。

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GEMOLOGICAL PROFILE

Crystallography: Isometric system. While many garnets form dodecahedrons, Merelani Tsavorite often occurs as rounded "nodules" or distorted crystals due to the extreme tectonic forces during formation.

The Fluorescence Signature: The most distinctive feature of this lot is the pinkish-red reaction under UV light in specific pieces. This indicates a high Chromium-to-Vanadium ratio, a trait highly prized by connoisseurs.

Optical Brilliance: With a high Refractive Index, Tsavorite has higher dispersion (fire) than Emerald, making it one of the most "alive" green gemstones when cut.

Internal Characteristics: Typical inclusions include "heat-wave" flow lines and occasional graphite platelets, which serve as a certificate of natural origin.

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MARKET INSIGHTS (2026)

Tsavorite remains one of the most expensive and investment-stable garnets on the market.

Rarity of Size: Tsavorite is estimated to be at least 200 times rarer than emerald. While small grains are relatively common, large, high-quality crystals over 10 carats—such as this 13.20 ct specimen—are exceptionally scarce and represent the top tier of the market.

The "Untreated" Premium: Unlike 99% of emeralds (which are oiled) or sapphires (which are heated), Tsavorite is never treated. This "pure" nature is its strongest selling point in 2026, appealing to the growing demand for completely natural gemstones.

The Merelani Premium: Material from the Merelani Hills, known for its "neon" saturation and unique chromium-driven fluorescence, commands a significantly higher price per carat than standard Kenyan or alluvial stones.

Investment Potential: Individual pieces that exhibit strong fluorescence ("Dragon Garnet" effect) are highly sought after by specialty collectors. For a stone of this magnitude and provenance, the value is driven not just by weight, but by its status as a world-class locality-specific mineral. Individual pieces with strong fluorescence can command a premium from collectors of specialty garnets ("Dragon garnet" - green changes to pink under UV light).

Pricing for Rough:

Standard Commercial Rough: $50–$150 per carat.

Select "Merelani Neon-green" Material: Can exceed $300+ per carat for rough capable of cutting 1ct+ stones.

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METAPHYSICAL & TRADITIONAL LORE

!!! IMPORTANT DISCLAIMER: The seller does not guarantee any medical, healing, metaphysical, magical and/or esoterical properties. The information is for context only. !!!

Birthstone: An alternative birthstone for January, representing a "modern" take on the garnet family.

The "Stone of Benevolence": In New Age circles, Tsavorite is known as a stone of wealth, vitality, and prosperity.

The "Merelani" Energy: Because these stones grow alongside Tanzanite, they are often believed to carry a "dual energy"—combining the grounding green of the Earth with the spiritual "blue" vibrations of the region.

Heart & Solar Plexus: Healers use Tsavorite to bridge the Heart Chakra (love) and the Solar Plexus (willpower), supposedly helping the wearer to manifest their dreams with confidence.

Physical Allegations: Esoterics claim it aids in recovery from trauma and supports the immune system due to its vibrant, life-affirming green color.

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DEAR COLLECTOR,

Thank you for your interest in "GeoChimes: Earth’s Exclusive Edition – Legacy: Dragon". We are keen to provide you with the best services and we treat every shipment with the utmost priority, ensuring a safe journey to your hands.

Pristine Condition: Every specimen undergoes a meticulous and careful manual cleaning process using isopropyl alcohol and water (no ultrasound used) to ensure purity and weight accuracy.

Precision Documentation: We provide exact measurements and weights for every piece, ensuring the description matches the reality of what you receive.

Selection & Storing: Each stone is professionally sorted and ready for immediate display or specific use in your project. Your order arrives in a professional, softly padded protective box, accompanied by detailed description.

The "Thank You" Bonus: We truly value your support. Every delivery includes a curated bonus gift, with its value scaled to reflect the generosity of your winning bid.

We wish you a successful auctions.

- GeoChimes