Collector’s Gems

What Are Collector’s Gems?

Collector’s Gems are those that transcend commercial standards—exceptional in quality, origin, rarity, or story. This collection is a tribute to connoisseurs who seek gemstones that speak beyond beauty: stones with provenance, uniqueness, or unrepeatable features.

Gemstone Quality and Appeal

Some Collector’s Gems are untreated rarities with unmatched clarity or color. Others might possess remarkable inclusions or optical effects—each telling a geological story. These are not simply gems, but natural treasures.

For Collectors and Designers Alike

Whether you’re curating a gem box or creating an heirloom, Collector’s Gems offer singular options. The quality often surpasses commercial grading—each gem chosen to inspire passion and wonder.

Unheated blue sapphire 5.32 ct for sale Unheated blue sapphire 5.32 ct for sale

Unheated Blue Sapphire gemstone 5.32 ct

$5,120.00
$5,120.00
Natural Violet Spinel from Tanzania Round Cut 5.95 ct Natural Violet Spinel from Tanzania Round Cut 5.95 ct

Magnificient Big Natural Violet Spinel from Tanzania!. Brilliant Cut. 5.95 ct

$3,970.00
$3,970.00
Large Aquamarine Oval cut 11.20 ct Large Aquamarine Oval cut 11.20 ct

Exceptional 11.20 ct Oval Aquamarine Gemstone - Eye-Clean & Untreated

$3,600.00
$3,600.00
Color Change Diaspore Gemstone 12.03 ct under different lighting conditions Color Change Diaspore Gemstone 12.03 ct under different lighting conditions

Exceptional Color Change Diaspore – Oval Cut, 12.03 ct

$2,342.00
$2,342.00
Sparkle Vivid Greenish Yellow Mali Garnet Oval Cut 4.54 ct Sparkle Vivid Greenish Yellow Mali Garnet Oval Cut 4.54 ct

Sparkle Yellow Mali Garnet – Oval Cut – 4.54 ct

$1,950.00
$1,950.00
Mint Green Paraiba Tourmaline 2 10 ct with certificate for sale MdMaya Gems Mint Green Paraiba Tourmaline 2 10 ct with certificate for sale MdMaya Gems

Mint Green Paraiba Tourmaline 2.10 ct – Oval Cut, Certified

$1,580.00
$1,580.00
Unheated Color Change Sapphire 4.03 ct. Oval Cut. This untreated gemstone is violetish blue in daylight and purple in incandescent light. A large gem at an affordable price. The gem has a nick on the girdle (not visible with the nacked eye), it will look perfect mounted in any piece of jewelry. Don't miss it! Unheated Color Change Sapphire 4.03 ct. Oval Cut. This untreated gemstone is violetish blue in daylight and purple in incandescent light. A large gem at an affordable price. The gem has a nick on the girdle (not visible with the nacked eye), it will look perfect mounted in any piece of jewelry. Don't miss it!

Unheated Color Change Sapphire 4.03 ct. Oval Cut. Blue to Purple

$1,450.00
$1,450.00
Color Change Diaspore Gemstone 7.68 ct under different lighting conditions Color Change Diaspore Gemstone 7.68 ct under different lighting conditions

Color Change Turkish Diaspore 7.68 ct – Oval Cut Gemstone

$1,390.00
$1,390.00
Large peach and pink tourmaline 10 15 ct Large peach and pink tourmaline 10 15 ct

Bicolor Tourmaline 10.15 ct – Peach Center with Bright Pink Edges (Oval Cut)

$1,300.00
$1,300.00
Color Change Diaspore Gemstone 7.77 ct under different lighting conditions Color Change Diaspore Gemstone 7.77 ct under different lighting conditions

Elegant Color Change Diaspore – Pear Cut, 7.77 ct (Turkey)

$1,200.00
$1,200.00
Large dark grayish reddish purple Spinel 5.30 ct under incandescent light Large dark grayish reddish purple Spinel 5.30 ct under incandescent light

Large dark grayish reddish purple Spinel 5.30 ct

$1,020.00
$1,020.00
  • Sold out
Elegant large golden tourmaline 5.25 ct cushion cut for sale MdMaya Gems Elegant large golden tourmaline 5.25 ct cushion cut for sale MdMaya Gems

Golden Bicolor Tourmaline 5.25 ct – Cushion Cut | October Birthstone

$880.00
$880.00
Natural Peach Morganite – Rectangle Cut, 7.50 ct Natural Peach Morganite – Rectangle Cut, 7.50 ct

Natural Peach Morganite – Rectangle Cut, 7.50 ct

$877.00
$877.00
Rare Gemstone Clinohumite Round Cut 1.83 ct Rare Gemstone Clinohumite Round Cut 1.83 ct

Rare Gemstone Clinohumite Round Cut 1.83 ct

$723.00
$723.00
  • Sold out
  • -24% Sale
Silver Grey Mogok Spinel Gemstone Cushion Cut 4.30 ct Silver Grey Mogok Spinel Gemstone Cushion Cut 4.30 ct

Amazing Silver Grey Mogok Spinel Gemstone! Cushion Cut. 4.30 ct.

$640.00 $840.00
$640.00
  • Sold out
idocrase 7.04 ct oval cut idocrase 7.04 ct oval cut

Rare Idocrase Gemstone 7.05 ct – Oval Cut, Vivid Green

$620.00
$620.00

Collector’s Gems: Nature’s Rarest Masterpieces

Every gem in this collection is a true standout—selected for its rarity, clarity, size or special optical phenomena. From rare mineral specimens to collector-grade stones, these gems are nature’s hidden masterpieces.

MdMaya Gems

Related Collections Collector’s Gems

Some gems aren't just beautiful—they’re collectible. In this section, we connect you with other extraordinary gemstones: from those with optical phenomena to the rarest on Earth. Explore pieces that intrigue both the heart and the eye, whether you're drawn by rarity, brilliance, or the unusual.

Shop All

Rare Gemstones

A curated selection of nature’s true oddities—gems so rare that few ever see them. Explore the exceptional.
Australian Boulder Wood Fossil Opal Pair. Cabochon Oval Cut. 10.45 ct.

Multicolor Gemstones

For those who collect with their heart. These vibrant treasures combine hues and stories in every facet.

Gems with Special Effects

From color change to asterism, discover gems that dazzle not just with beauty, but with surprise.

Clinohumite

Exceptionally rare and strikingly beautiful, Clinohumite is a must-have for collectors seeking the extraordinary.

FAQ

Grading Gems

MdMaya Gems uses the following clarity scale when grading gemstones.

Setting aside translucent and opaque gemstones, the first classification to take into account is: 

Type 1: Stones that are often inclusion free

Gemstones that usually don't have inclusions:  Aquamarine, blue topaz, blue zircon, chrysoberyl (except alexandrite), danburite, heliodor, imperial topaz, morganite, smoky quartz, spodumene (kunzite, hiddenite), tanzanite and white zircon.

Type 2: Stones that are usually included 

They usually show small inclusions that are visible to the naked eye.  Apatite, alexandrite, amethyst, ametrine, corundum (sapphire and ruby), diopside, fluorite, garnets, iolite,  spinel, peridot, tourmaline (except green tourmaline, rubellite, watermelon, paraiba) and zircon (red, yellow and orange)

Type 3: Stones that are almost always included

Benitoite, emerald, idocrase, kyanite,paraiba tourmaline, prehnite,  red beryl,red – pink tourmaline,rubelliteand watermelon tourmaline.

CLARITY GRADES:

EYE CLEAN: Appears clean to the unaided eye. (Type 1, 2 and 3)

SLIGHTLY INCLUDED:       

Type 1: Minute inclusions difficult to see with the unaided eye.

Type 2: Minor inclusions easy to see with the unaided eye.

Type 3: Noticeable inclusions apparent to the unaided eye.

MODERATELY INCLUDED:       

Type 1: Minor inclusions some what easy to see with the unaided eye.

Type 2: Noticeable inclusions apparent to the unaided eye.

Type 3: Obvious inclusions very apparent to the unaided eye.

HEAVILY included: prominent inclusions that have a negative effect on appearance or durability.

SEVERELY INCLUDED: prominent inclusions that have a severe effect on appearance or durability or both. (Type
1, 2 and 3).

All our gemstones have been analyzed by a qualified gemologist. Each precious stone comes with a gemological certificate to guarantee its authenticity, as well as describing its unique characteristics.
Pictures in this website might not reflect the intensity and brightness of the real color of the gemstone. Additionally, the pictures might not properly represent the real size of the gem (provided in millimeters). Do not hesitate in requesting more graphic documentation of the precious stone for any clarifications. This will be provided shortly to accommodate your needs. 
The photographs of the inclusions, if any, are a distinctive sign NATURAL origin.

If you are interested in obtaining more information about this gemstone, CONTACT US and we will respond as son as possible.

Inclusions are nature’s signature. We embrace their beauty and uniqueness as proof of authenticity. Microphotography up to 50x is available upon request.

Shipping

Orders are processed Monday to Friday, with maximum 48 hours.

Shipping will need around 1 work week within Europe, 10 - 15 days to the USA and Japan, and maximum 30 days to another locations.

This days not including any customs check. We do not have any influence on delays created by customs.

EMS POSTAL EXPRES INTERNATIONAL 

(Andorra, Austria, Belgium, Bulgaria, Canada, Cyprus, Czech Republic, Denmark, Estonia, Faroe Islands, Finland, France, Germany, Gibraltar, Greece, Greenland, Holy See (Vatican City State), Hungary, Iceland, Ireland, Italy, Liechtenstein, Lithuania, Luxembourg, Malta, Monaco, Netherlands, Norway, Poland, Portugal, Romania, San Marino, Slovenia, Spain, Sweden, Switzerland, United Kingdom, United States)  

Cost: $25 (registered airmail, insurance, export-taxes, packaging are included in our prices).


FEDEX cost $30.

Free Shipping (Fedex) on Orders of $700 or More for all our products.

REST OF THE WORLD

EMS POSTAL EXPRES INTERNATIONAL  Cost: $60 

FEDEX  cost $75. 

Free Shipping (Fedex) on Orders of $2000 or More for all our products.

Registered airmail, insurance, export-taxes, packaging are included in our prices.

We have a flat rate, you can order as many items as you like and pay just a single shipping fee.

Our Store

We took several photos:
We take photos with daylight (no lightbox and no extra lighting at all).
And we take photos and videos on mirror in a light box with extra lighting (this kind of photos clearly show the quality of the cut and the clarity of the gem) and videos. 

We are based in Spain, between Madrid and Barcelona. Our store is fully online and we’re here 24/7, 365 days a year.

We’re happy to assist with questions, photos, videos or anything else. Visit our Contact Us page for easy access.