Shopping Cart

Your cart is empty.

Your cart is empty.

GEMHUB Gemstones For Jewelry Making Alexandrite Stone 60-70 Carats Oval Cut Color Changing Stones Loose Gemstones

Free shipping on orders over $29.99

$28.99

$ 14 .99 $14.99

In Stock

Product details

Item display length
30 millimeters
Item width
26 millimeters
Material
Gemstone
Metal type
No-metal-type
Gem type
Color changing alexandrite
Total gem weight
70 carats

About this item

  • Alexandrite are typically cut and shaped beautifully which also used for enhancing the beauty of jewelry . Large alexandrite are considered very rare. Cutting of alexandrite often necessitates uneven bottoms in order to properly orient and best display perfect shape and well structured. Because of its scarcity, especially in larger sizes, alexandrite is a relatively expensive member of the chrysoberyl family.
  • About Item - Hydrothermal Color Changing Alexandrite Loose Gemstone | Size - 60-70 Carat Approx. | Dimension - 30 x 27 x 18 mm approx. | When you will receive the item, there will be somehow plus minus difference in carat of stone of Approx. 5 - 7 carat.
  • Alexandrite, with its chameleon-like qualities, is a rare variety of the mineral chrysoberyl. Its color changing to brownish or purplish red in the incandescent light from a lamp or candle flame. This is a result of the complex way the mineral absorbs light. Alexandrite is also a strongly pleochroic gem, which means it can show different colors when viewed from different directions.
  • Our Expert gemologists verified this Brown Alexandrite which passed many quality base tests and get stone certified through which we are completely assured of Top Quality Gemstone. Only after that, we deliver stones to you because we also, care about your loved ones.
  • We use to cut the stones and polish them at our own. When you will receive the item, there will be somehow plus minus difference in carat of stone of Approx. 5 - 7 carat. Approx. weight of stone is 60-70.



Product Description

Hydro Gemstones

HYDROTHERMAL GEMSTONES

A brief on what lab created hydrothermal gemstones are

Hydro

What are Hydrothermal Gemstones:

Hydrothermal gemstones are synthetic gemstones created in a laboratory using a process that mimics the conditions found in natural hydrothermal environments. These environments involve high temperatures and pressures that facilitate the growth of crystals. Hydrothermal gemstones are made by dissolving the necessary chemical components in a superheated water solution, which is then allowed to cool and crystallize. The resulting gemstones can have the same physical and chemical properties as natural gemstones, but are often more affordable due to their synthetic nature. Some popular hydrothermal gemstones include aquamarine, ruby, and emerald.

How was Hydrothermal Gemstone created:

A fun fact about hydrothermal gemstones is that they were actually first created by accident in the late 1800s. A French chemist named Auguste Verneuil was trying to create synthetic rubies using a flame fusion method, but instead discovered hydrothermal growth when he accidentally dropped a ruby seed crystal into a hydrothermal solution. This led to the development of the hydrothermal growth process, which is now commonly used to create a variety of synthetic gemstones.

How Popular are Hydrothermal Gemstones:

Hydrothermal gemstones are quite popular and widely used in the jewelry industry. They offer a more affordable alternative to natural gemstones, while still retaining the same physical and chemical properties. Hydrothermal gemstones are often difficult to distinguish from natural gemstones, and as a result, they are a popular choice for jewelry designers who want to offer high-quality gems at a more affordable point. Some popular hydrothermal gemstones include aquamarine, emerald, ruby, sapphire, and quartz. However, it's important to note that natural gemstones are still highly prized and sought after, especially for their rarity and uniqueness.

Why Choose Hydrothermal Gemstones:

Hydrothermal gemstones are identical to Natural gemstones when it comes to their physical properties. They look and feel the same and cost a fraction of the amount that their natural counterparts cost. Not only this but they come in much larger sizes than the natural gemstones. A 10+ Carat Hydrothermal gemstone is much easier to find than a Natural gemstone of the same carat weight. Recently Lab Grown Diamonds have gained popularity for various reasons and with them hydrothermal gemstones have gained popularity as well. Their cost

Our most popular!

Pink Tourmaline

Pink Tourmaline

With its deep pink color this is one of the more eye catching showstoppers that we have. This gemstone loves attention and to get that it will shine as bright as it can. With its deep pink color this gemstone will go best with your party outfits. The gemstone has multiple facets and has been cut and polished with extensive care to make the best out of its hydrothermal origins. The large sizes just adds to the allure and charm of this stunning gemstone.

Multi Color Ametrine

Multi Color Ametrine

These alluring gemstones have up to 3 colors in a single gem. They come in multiple different varieties and each variety has a different color combination. Multiple different shapes and even more varieties makes this gemstone perfect for people who love surprises! The gemstone has multiple facets and has been cut and polished with extensive care to make the best out of its hydrothermal origins. The large sizes just adds to the allure and charm of this stunning gemstone.

Aquamarine

Aquamarine

Aquamarine, The clear sea blue color piece of art.

This gemstone is perfect from its color to its shapes and how it compliments your style. It goes with almost any fashion choice and is an all around winner in terms of these beautiful gemstones. Being our most popular gemstone we have had thousands of happy customers who have purchased this and couldn't get enough of the beauty that this gemstone possesses.

Color Changing Alexandrite

Color Changing Alexandrite

From Brownish-Red to light purple this stone is sure to get your head spinning for multiple reasons which may or may not include the incredible fire this gemstone has.

The gemstone has multiple facets and has been cut and polished with extensive care to make the best out of its hydrothermal origins. The large sizes just adds to the allure and charm of this stunning gemstone.

Dark Yellow Citrine

The Citrine and Amethyst Family!

Dark Yellow Citrine, It has a deep brownish yellow color and refracts light very effectively. The color compliments a fiery personality as the gemstone itself has a lot of fire in it. The gemstone has multiple facets and has been cut and polished with extensive care to make the best out of its hydrothermal origins. The large sizes just adds to the allure and charm of this stunning gemstone.

Dark Yellow Citrine

Light Yellow Citrine

Purple Amethyst

Green Amethyst

The Topaz Family!

Mystic Topaz

Mystic Topaz

Mystic Topaz is a type of colorless topaz that has been treated with a thin layer of titanium to create a rainbow effect that changes color depending on the angle of the light. The colors can include green, blue, purple, yellow, and pink, and the gemstone is often used in jewelry making. It has a beautiful multicolor rainbow effect which catches your eye.

Dark Blue Topaz

Dark Blue Topaz

Dark Blue Topaz is a variety of topaz that has a deep blue color, which is created by exposing colorless or pale topaz to heat or radiation. This process causes the stone to undergo a change in its molecular structure, resulting in the blue color. Dark Blue Topaz is a popular gemstone and is often used in jewelry, particularly in rings, necklaces, and earrings. It is also the birthstone for the month of December.

Red Topaz

Red Topaz

Red Topaz is a precious gemstone that has a vibrant red to orange-red color, which is caused by the presence of chromium in the stone. It is a very rare and valuable gemstone, with most of the world's supply coming from Brazil. Red Topaz is often used in jewelry making, particularly in rings and necklaces, and is highly prized by collectors and gemstone enthusiasts. It is also the birthstone for the month of November.

Baby Pink Topaz

Baby Pink Topaz

Baby Pink Topaz is a type of topaz that has a soft, delicate pink color. It is a rare and highly prized gemstone, with most of the world's supply coming from Brazil. Baby Pink Topaz is created by exposing colorless or pale topaz to heat or irradiation, which causes a change in its molecular structure and results in the pink color. It is often used in jewelry making, particularly in rings, necklaces, and earrings, and is highly sought after by collectors and gemstone enthusiasts.

Swiss Blue Topaz

The most popular Topaz, Swiss Blue Topaz!

Swiss Blue Topaz is a variety of topaz that has a bright, intense blue color. It is created by exposing colorless or pale topaz to heat or irradiation, which causes a change in its molecular structure and results in the blue color. The name "Swiss" does not refer to the origin of the gemstone, but rather to the intensity and saturation of the blue color, which is reminiscent of the bright blue waters of Switzerland's mountain lakes. Swiss Blue Topaz is a popular gemstone and is often used in jewelry making, particularly in rings, necklaces, and earrings.


Beautiful rare gems
Reviewed in Canada on February 7, 2025
It's interesting ,the gem will scratch glass but doesn't register on a Presiduim 2 gem tester.The Presiduim 2 says "glass" but it's harder then glass and will scratch glass.Synthetic polyemorphadite?It's the same with all those large gem stones 25$ for 59 carets of alexanderite or topaz or whatever.they all scratch glass but do not register on a presiduim 2 tester.Anyones guess.
Customer
Reviewed in the United States on February 3, 2025
The Gemstone is quite large as expected, the color does change but not in a way like an alexandrite. The stone is magenta in sunlight and orange in incandescent light. I expect it might turn green in florescent light but I haven't seen that yet. This is not a good substitute for alexandrite.
Grandma Jules
Reviewed in the United States on June 23, 2022
Tried to complete a set but color shifts completely different spectrum . Need to start with all from same batch ,ring,necklace earings. Product picture doesn't help.
debra benton
Reviewed in the United States on May 17, 2022
Color was beautiful
Cabaretsinger
Reviewed in the United States on August 17, 2021
At 82 ct it is a lovely example of the chrysoberyl family and a fine addition to my loose jewel collection. The color change is not as dramatic as can be found in much smaller stones but the clear color and the size of the stone make it very worthwhile. The only downside is the length of time it took to get here, but worth the wait!
Dw
Reviewed in the United States on February 2, 2021
Bought it for daughter.
Debra A VanOrden
Reviewed in the United States on November 28, 2021
The media could not be loaded.
john ray
Reviewed in the United States on October 15, 2021
My wife really loves it.
Stoney
Reviewed in the United States on May 25, 2019
Just beautiful! It sparkles nicely! And it arrived a couple weeks early! Still waited almost 3 but so worth it! I am a collector and this has a Happy place in my treasure chest! ;)
FawksMulder
Reviewed in Canada on October 24, 2019
Had a chip missing form the product extremely dissapointed for the time that it took to get here.