u/Gem_Exchange17

Natural 3.29 Carat Spessartite Garnet from Madagascar set in 925 Sterling Silver. (Can be resized at request)

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Price: $600 (Includes Shipping Cost)

Natural 1.35 Carat Tanzanite from Tanzania set in 925 Sterling silver.

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Price: $500 (includes shipping cost)

Beautiful 2.26 Carat Natural Pink Tourmaline from Afghanistan set in 925 Sterling Silver.

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Price: $450 + Shipping

6.90 Carat Heated Green Hiddenite (Kunzite) from Afghanistan set in 925 Silver. DM for pricing. Ships world wide

1.57 Carat Natural Pink Sapphire from Afghanistan set in 14k white Gold. DM for pricing. Ships world wide.

2.01 Carat Tanzanite from Tanzania set in 14k white gold. DM for price, Ships world wide

3.10 Carat Tanzanite from Tanzania 🇹🇿

Tanzanite’s are some of my favorite Gemstones.

All Gemstones for Sale

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6.50 Carats (6 Pcs) Clinohumite from Tajikistan 🇹🇯

I was lucky enough to purchase two of these very rare gemstones from a commercial mine that has been closed due to political instability, extreme terrain and limited infrastructure.

• Mineral group: Humite group

• Chemical formula: (Mg,Fe)₉(SiO₄)₄(F,OH)₂

• Crystal system: Monoclinic

• Hardness: 6–6.5

It’s basically a magnesium silicate with fluorine, formed in high-temperature metamorphic environments.

The main clinohumite source is the Kukhilal area in the Pamir Mountains.

That same area is better known for spinel and clinohumite is more of a byproduct occurrence, not a primary mining target.

Clinohumite is rare even to find in the ground. It is usually alongside other minerals and not usually mined directly.

Only small pockets produce facetable material.

Clinohumite sits in that strange category of stones that are scientifically important, geologically rare, but commercially niche. It’s not a mainstream gem

First described in 1876 and named after a British mineralogist Sir Abraham Hume.

For decades it wasn’t cut or sold as Jewlery but instead studied as a mineral specimen.

Interest picked up when deposits in Tajikistan, Russia (Siberia), and Italy started producing faceted grade crystals but even then it stayed obscure because of its lack of hardness, limited supply and weak market demand.

Tajikistan produced the best known gemstone quality material. It’s important to geology because it forms in high pressure, high temperature environments in marble or ultramafic rocks.

Clinohumite is studied in relation to water deep in the earths mantle, linked to plate tectonics and subduction zones which helps scientists understand how water moves deep inside the earth.

Clinohumite never became mainstream because it was too soft for Jewlery, too rare for mass production and not enough sparkle to compete with sapphire, Spinels or Garnets.

Tajikistan mine (Kukhilal) is one of the oldest mine sites on earth (over 1,000 years old. Mining in this region dates back to the 7th century AD. It was already famous in medieval times for Balas Rubies (Spinels).

Famous “rubies” like the Black Prince’s Ruby are actually spinel believed to originate from this region

This mountain supplied some of the most famous gemstones in history

The mine itself is located on a steep cliff (9,500 ft elevation) above the Panj River. After climbing narrow mountain paths there is an ancient maze of tunnels and chambers. Some tunnels extend 500 - 800 meters in the mountain all hand carved through centuries of mining.

The locals call it the sunflower stone and it is found by chance not specifically mined as it forms alongside spinels.

During the Soviet period mining was more organized and explored heavily but after the USSR collapsed mining almost became non existent due to civil war and economic stability. Since then majority of the mines have been abandoned and only a few are occasionally mined.

Historically there are 9 major tunnels and only one or two intermittently active. Small crews trespass restricted and heavy government oversight areas of the mine to extract minerals.

In basic terms Clinohumite is found in one of the oldest royal gemstone mines in history.

2.10 Carat Tanzanite from Tanzania 🇹🇿

Tanzanites gain the nickname Blue diamond by the Tanzanian locals for its outstanding color and glimmer.

Tanzanite is one of the most Geographically restricted gemstones on earth.

Discovered in 1967 near mount killimanjaro in northern Tanzania 🇹🇿

Found only in a small mining area called the Merelani Hills.

Originally mistaken for sapphires due to its blue color

Identified as a new variety of the mineral zoisite

There is only one known deposit in the world and it’s about a few square miles.

Tanzanite was promoted and named by Tiffany & Co.

It was introduced globally in 1968 & Tiffany & Co essentially created the market for Tanzanite.

Tanzanite is known for something most stones don’t have.. Pleochroism which shows three colors depending on the angle, Blue, Violet and Burgundy/red flashes.

Top stones show a deep royal blue with violet undertones.

Almost all tanzanites are heat treated.

7.90 Carat (7 PCs) Natural Spinels from Burma 🇲🇲

Mining history goes back 800+ years, with some sources tracing activity to the 6th century.

The region sits in a unique marble-hosted metamorphic belt, which is critical for forming high-quality spinel crystals.

Spinel here was historically mined alongside rubies often treated as a byproduct, which is wild considering today’s values.

Believed to offer protection and spiritual power

Chemical formula: MgAl₂O₄ (magnesium aluminum oxide)

14.35 Carat Natural Ametrine from Bolivia 🇧🇴

Base mineral: Quartz

Ametrine is one of the few gemstones that naturally shows two distinct colors in one crystal

Purple is amethyst

Yellow/Orange is citrine

Almost all natural ametrine comes from one place (Anahi Mine in Bolivia)

A Spanish conquistador received a bi-colored stone as a gift after marrying a Bolivian princess from the Ayoreo tribe, She gave it to him as a symbol of two worlds united.

Hardness is a 7 on Mohs scale

Fine stones can fetch prices between $50–$150 carat

3.90 Carat Natural Purple Sapphire from Sri Lanka 🇱🇰

Natural purple sapphires sit right in the middle between blue and pink on the color spectrum. Their color comes from a mix of iron and chromium in the crystal.

The most valuable are pure, saturated purple with no gray or brown.

Purple stones were often misclassified as amethyst or spinel in older times.

Strong purple sapphire material is actually rarer in fine quality.

Unheated purple sapphires equal premium especially if the color is strong and even.

Fine vivid purple is sapphires are rare.

Some purple sapphires show color shift under lighting

1.60 Carat Green Sapphire from Sri Lanka 🇱🇰

• Chemical formula: Al₂O₃

• Hardness: 9 on Mohs scale

Green sapphire is a variety of Corundum. The same mineral as blue sapphire and ruby. The only difference is trace elements in the crystal.

Green sapphires were largely overlooked for centuries.

Sri Lankan sapphires often cleaner and more gem-quality.

Green sapphires are rarely pure green and most green sapphires are heat treated.

Lately the market has shifted from pure green to Teal (Blue/Green).

7.40 Carat (4Pcs) Heated Blue Sapphires from Sri Lanka 🇱🇰

•Heating sapphires is one of the oldest and most misunderstood practices in gemology. It’s not a scam by default. It’s a controlled enhancement of a natural stone, and it has been done for centuries.

• Evidence shows heating was used as early as ancient Sri Lanka.

• Gem traders discovered three trial and error that placing stones in fire improved color and reduced cloudiness.

• Heating became standardized in the 1900’s which made Thailand a major hub for Sapphire and Ruby heat treatment.

• Primitive fire methods became phased out by Controlled furnaces which changed the industry from craft to industrial practice.

• Heating is now the most common treatment in sapphire’s worldwide.

• Heating typically occurs between 1,600°C – 1,800°C (2,900–3,300°F) and helps improve color, dissolves rutile needles and enhances transparency.

• There are three types of heating.

1. Standard Heat Treatment (No additives, Permanent and industry accepted).

2. Flux Heating “higher end treatment”, (uses Chemicals to heal fractures and is less common).

3. Beryllium Diffusion “Red flag if undisclosed”, (Introduces elements into the stone, changes color dramatically

• Heated Sapphires make them more affordable, make them more visually appealing, Does not affect Mohz (Hardness stays at 9).

• Unheated Sapphires are more rare and commands premium prices

2.40 Carat Natural Pink Sapphire from Afghanistan 🇦🇫

• Afghanistan doesn’t get the same spotlight as Sri Lanka or Madagascar, but in the gem world, it’s one of the most underrated sources of natural pink sapphires

• Found in marble-hosted deposits (same geological type as Burma/Myanmar)

• Remote, mountainous terrain makes mining difficult and often small-scale.

• Stones are typically recovered by hand mining, not large industrial operations and because of this you get more natural untreated material.

• Mining in Jegdalek dates back over 700–1,000 years

• Afghan stones started appearing more in international gem markets in the last 20 to 30 years.

• These stones have history, but they’ve never been mass commercialized like Sri Lankan sapphires.

• Many Afghan pink sapphires are unheated or lightly heated, compared to Sri Lanka and Madagascar sapphires they are less aggressively treated overall.

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