Natural Loose Gemstones • Worldwide Shipping • Hand-selected by a Gemologist
Octoberr Birthstones – 15% Off Tourmalines & Opals • Automatically Applied at Checkout

Inspired by Otober

Celebrate October with the captivating beauty of opal and tourmaline. Discover our hand-selected natural gemstones, from opals with mesmerizing play-of-color to tourmalines in an extraordinary range of hues, chosen for collectors and bespoke jewelry.

Discover Natural Opals

5.04 ct Mexican Fire Opal – Freeform Sculptural Gemstone 5.04 ct Mexican Fire Opal – Freeform Sculptural Gemstone
5.04 ct Mexican Fire Opal – Freeform Sculptural Gemstone
A vivid 5.04 ct Mexican fire opal with an elegant freeform sculptural cut, exceptional brightness, and rich medium-tone orange. Untreated and eye-clean.
$410.00
$410.00
5.04 ct Mexican Fire Opal – Freeform Sculptural Gemstone 5.04 ct Mexican Fire Opal – Freeform Sculptural Gemstone
5.04 ct Mexican Fire Opal – Freeform Sculptural Gemstone
$410.00
$410.00
Stunning Boulder Opal 25.14 ct. from Australia. Cabochon Cut. Free Form. Imagine an island surrounded by deep blue-green waters, that's what this opal is. Stunning Boulder Opal 25.14 ct. from Australia. Cabochon Cut. Free Form. Imagine an island surrounded by deep blue-green waters, that's what this opal is.
Stunning Boulder Opal – Free Form Cabochon – 25.14 ct – Australia
Striking 25.14 ct Boulder Opal from Australia with mesmerizing blue-green veins. A natural free-form cabochon, perfect for a bold pendant or statement ring.
$349.00
$349.00
Stunning Boulder Opal 25.14 ct. from Australia. Cabochon Cut. Free Form. Imagine an island surrounded by deep blue-green waters, that's what this opal is. Stunning Boulder Opal 25.14 ct. from Australia. Cabochon Cut. Free Form. Imagine an island surrounded by deep blue-green waters, that's what this opal is.
Stunning Boulder Opal – Free Form Cabochon – 25.14 ct – Australia
$349.00
$349.00
Opal Gemstone for sale
Celebrated for its unique play-of-color and individuality, opal is one of October’s most distinctive birthstones.

Opal Gemstones: Unique Play-of-Color Gems for Custom Jewelry

Shop Now

Explore Natural Tourmalines

Tourmaline Gemstones for sale
From vivid pinks to extraordinary bi-colors and deep blues, tourmaline offers one of the richest color ranges in the gem world.

Loose Tourmaline Gemstones – Natural Stones for Jewelry & Collectors

Shop Now
6.75 ct Soft Pink & Colorless Bicolor Tourmaline Matched Pair – Emerald Cut 6.75 ct Soft Pink & Colorless Bicolor Tourmaline Matched Pair – Emerald Cut
6.75 ct Soft Pink & Colorless Bicolor Tourmaline Matched Pair – Emerald Cut
An elegant matched pair of natural bicolor tourmalines displaying a delicate transition from soft pink to colorless. Their classic emerald cuts, generous size and refined pastel tones make them a beautiful choice for bespoke earrings or a distinctive jewelry design.  
$720.00
$720.00
6.75 ct Soft Pink & Colorless Bicolor Tourmaline Matched Pair – Emerald Cut 6.75 ct Soft Pink & Colorless Bicolor Tourmaline Matched Pair – Emerald Cut
6.75 ct Soft Pink & Colorless Bicolor Tourmaline Matched Pair – Emerald Cut
$720.00
$720.00
Amazing pink tourmaline, 0.63 ct, asscher cut - square. This small tourmaline has a great brightness and saturation, it is very balanced in color, its asscher cut makes it look bigger than it really is, it will be perfect in a ring. It is a great gem at a reduced price Amazing pink tourmaline, 0.63 ct, asscher cut - square. This small tourmaline has a great brightness and saturation, it is very balanced in color, its asscher cut makes it look bigger than it really is, it will be perfect in a ring. It is a great gem at a reduced price
Asscher Cut Pink Tourmaline – 0.63 ct, Mozambique
Small but striking pink tourmaline with vibrant color and an Asscher cut that enhances its presence. A bright gem at a small price.  
$200.00
$200.00
Amazing pink tourmaline, 0.63 ct, asscher cut - square. This small tourmaline has a great brightness and saturation, it is very balanced in color, its asscher cut makes it look bigger than it really is, it will be perfect in a ring. It is a great gem at a reduced price Amazing pink tourmaline, 0.63 ct, asscher cut - square. This small tourmaline has a great brightness and saturation, it is very balanced in color, its asscher cut makes it look bigger than it really is, it will be perfect in a ring. It is a great gem at a reduced price
Asscher Cut Pink Tourmaline – 0.63 ct, Mozambique
$200.00
$200.00

Certified Natural Emeralds

New Collection

Discover vivid green Zambian Emeralds, each selected for its individual character and accompanied by a report from an independent gemological laboratory.

2.00 ct Natural Zambian Emerald – Vivid Green Emerald Cut 2.00 ct Natural Zambian Emerald – Vivid Green Emerald Cut
2.00 ct Natural Zambian Emerald – Vivid Green Emerald Cut
$1,190.00
$1,190.00
1.75 ct Natural Zambian Emerald – Vivid Green, No Oil 1.75 ct Natural Zambian Emerald – Vivid Green, No Oil
1.75 ct Natural Zambian Emerald – Vivid Green, No Oil
$1,350.00
$1,350.00
1.65 ct Natural Zambian Emerald – Vivid Green Emerald Cut 1.65 ct Natural Zambian Emerald – Vivid Green Emerald Cut
1.65 ct Natural Zambian Emerald – Vivid Green Emerald Cut
$875.00
$875.00

Gemstones by Color

Why MdMaya Gems?

Every gem is hand-selected by a certified gemologist.

Each stone is individually sourced—never mass produced or duplicated—and chosen for its natural beauty, true color, and unique character.

I photograph every gem myself, providing true-to-life images with 8–10 detailed views. A short video is also included so you can appreciate each gemstone more naturally and confidently.

Whether you’re designing custom jewelry or collecting fine gemstones, you receive pieces selected with precision, honesty, and expertise.

MdMaya Gems was built from years of study, passion, and a lifelong fascination with natural gemstones. Discover the story behind the project.

Shop All

Our Recomendations

files/paraiba-tourmaline-2-21-ct-pear-cut-picture-2.jpg
Paraiba Tourmalines: Vivid Neon Blues from Deep Within the Earth
products/untreated-blue-sapphire-1-01ct_2.jpg
Blue Gemstones
products/rich-orange-spessartite-garnet-pear-cut-1-91-ct-p1.jpg
Garnets Gems: A Colorful World of Tradition and Brilliance

Natural, hand-selected gems for accessible custom jewelry

Bright Pink Tourmaline Cushion Cut 1.71 ct Bright Pink Tourmaline Cushion Cut 1.71 ct
Cushion Cut Bright Pink Tourmaline – 1.71 ct, Mozambique
Sweet pink tourmaline with brilliant luster and a cushion cut that looks larger than its weight. Perfect for a pendant or delicate ring.
$286.00
$286.00
Bright Pink Tourmaline Cushion Cut 1.71 ct Bright Pink Tourmaline Cushion Cut 1.71 ct
Cushion Cut Bright Pink Tourmaline – 1.71 ct, Mozambique
$286.00
$286.00
Bicolor Tourmaline 1.02 ct – Blue Green Afghan Gem Bicolor Tourmaline 1.02 ct – Blue Green Afghan Gem
Bicolor Tourmaline 1.02 ct – Blue Green Afghan Gem
Natural 1.02 ct Afghan bicolor tourmaline with an elegant play of blue and green tones.Small yet full of life and brilliance, beautifully cut and eye clean.  
$200.00
$200.00
Bicolor Tourmaline 1.02 ct – Blue Green Afghan Gem Bicolor Tourmaline 1.02 ct – Blue Green Afghan Gem
Bicolor Tourmaline 1.02 ct – Blue Green Afghan Gem
$200.00
$200.00
Discover the Collection

Affordable Natural Gemstones Under $300

Start Exploring
Show More

Inside and Out

I love gems, but as a gemologist, above all, I love their inner world. Join me on this journey to see natural gems from the inside.

New arrivals

Natural Round Moonstone 4.10 Ct – Blue Sheen Cabochon from Sri Lanka Natural Round Moonstone 4.10 Ct – Blue Sheen Cabochon from Sri Lanka
Natural Round Moonstone 4.10 Ct – Blue Sheen Cabochon from Sri Lanka
$275.00
$275.00
  • Sold out
Natural Moonstone 3.67 Ct – Oval Blue Sheen Cabochon from Sri Lanka Natural Moonstone 3.67 Ct – Oval Blue Sheen Cabochon from Sri Lanka
Natural Moonstone 3.67 Ct – Oval Blue Sheen Cabochon from Sri Lanka
$230.00
$230.00
Blue Sheen Moonstone Pair 8.29 ct Total – Natural Sri Lanka Oval Cabochons Blue Sheen Moonstone Pair 8.29 ct Total – Natural Sri Lanka Oval Cabochons
Blue Sheen Moonstone Pair 8.29 ct Total – Natural Sri Lanka Oval Cabochons
$520.00
$520.00
Natural Blue Sheen Moonstone 3.66 Ct Oval Cabochon – Sri Lanka Natural Blue Sheen Moonstone 3.66 Ct Oval Cabochon – Sri Lanka
Natural Blue Sheen Moonstone 3.66 Ct Oval Cabochon – Sri Lanka
$260.00
$260.00
3.31 Ct Natural Blue Sheen Moonstone Cabochon – Sri Lanka Oval Gem 3.31 Ct Natural Blue Sheen Moonstone Cabochon – Sri Lanka Oval Gem
3.31 Ct Natural Blue Sheen Moonstone Cabochon – Sri Lanka Oval Gem
$190.00
$190.00
4.40 Ct Natural Blue Sheen Moonstone Cabochon – Sri Lanka Oval Gem 4.40 Ct Natural Blue Sheen Moonstone Cabochon – Sri Lanka Oval Gem
4.40 Ct Natural Blue Sheen Moonstone Cabochon – Sri Lanka Oval Gem
$215.00
$215.00
Blue Sheen Moonstone 3.03 ct – Natural Sri Lanka Oval Cabochon Blue Sheen Moonstone 3.03 ct – Natural Sri Lanka Oval Cabochon
Blue Sheen Moonstone 3.03 ct – Natural Sri Lanka Oval Cabochon
$220.00
$220.00
Blue Sheen Moonstone 5.32 ct – Natural Sri Lanka Oval Cabochon Blue Sheen Moonstone 5.32 ct – Natural Sri Lanka Oval Cabochon
Blue Sheen Moonstone 5.32 ct – Natural Sri Lanka Oval Cabochon
$550.00
$550.00
Blue Gray Spinel Pair 3.21 ct – Burmese Cushion Cut Matched Pair Blue Gray Spinel Pair 3.21 ct – Burmese Cushion Cut Matched Pair
Blue Gray Spinel Pair 3.21 ct – Burmese Cushion Cut Matched Pair
$850.00
$850.00
Matched Pair Blue-Green Indicolite Tourmaline 2.55 ct – Afghan Emerald Cut Gems Matched Pair Blue-Green Indicolite Tourmaline 2.55 ct – Afghan Emerald Cut Gems
Matched Pair Blue-Green Indicolite Tourmaline 2.55 ct – Afghan Emerald Cut Gems
$490.00
$490.00
  • Sold out
Matched Pair Blue Indicolite Tourmaline 2.07 ct – Afghan Rectangle Cut Gems Matched Pair Blue Indicolite Tourmaline 2.07 ct – Afghan Rectangle Cut Gems
Matched Pair Blue Indicolite Tourmaline 2.07 ct – Afghan Rectangle Cut Gems
$440.00
$440.00
  • Sold out
5.95 ct Yellowish Orange Topaz – Fancy Cushion Brilliant (Pakistan) 5.95 ct Yellowish Orange Topaz – Fancy Cushion Brilliant (Pakistan)
5.95 ct Yellowish Orange Topaz – Fancy Cushion Brilliant (Pakistan)
$420.00
$420.00

Latest articles

Birthstones By Month
  • Birthstones by Month
  • 0 comments
Birthstones By Month
Each month of the year is associated with a certain gem, like the signs of the zodiac, anniversaries, etc. The correspondence of a particular stone with a certain month has been changing over time, although the use of gemstones as an amulet is still frequent even today. 
Mª Dolores Sánchez Polledo
Piedra Luna: Guía Gemológica, Historia y Adularescencia
  • 0 comments
Piedra Luna: Guía Gemológica, Historia y Adularescencia
Descubre la piedra luna: una gema fascinante famosa por su resplandor flotante, su historia ligada a la Luna y su belleza única. Exploramos su adularescencia, inclusiones, orígenes y significado cultural desde una perspectiva gemológica rigurosa.
Mª Dolores Sánchez Polledo
Moonstone Gemstone Guide: Meaning, Glow & Lore
  • 0 comments
Moonstone Gemstone Guide: Meaning, Glow & Lore
Discover the fascinating world of moonstone, from its floating blue glow and internal feldspar structures to its ancient lore, Art Nouveau beauty, and gemological secrets. Learn what causes adularescence, how gemologists identify moonstone, and why this luminous gem has captivated humanity for centuries.
Mª Dolores Sánchez Polledo
Guía de la Amatista – Piedra Natal de Febrero: Significado, Color y Valor
  • Amatista una púrpura gema digna de Reyes
  • 0 comments
Guía de la Amatista – Piedra Natal de Febrero: Significado, Color y Valor
La amatista es la piedra natal de febrero y una variedad púrpura del cuarzo valorada por su belleza, historia y propiedades gemológicas. Descubre su origen, color, valor y simbolismo.
Mª Dolores Sánchez Polledo
see all

What Our Customers Say

5.00 ★ (24)
Verified