Gemstones Special Effects

Some times colored gemstones present some very striking optical effects. This is due to characteristic structures, defects or even inclusions, gems can show different effects such as:

Asterism, Adularescence, Aventurescence, Chatoyancy - Cat's eye effect, Iridiscence, Labradorescence, Play of Color, Change of Color, Opalescence and Orient.

If you are interested in knowing why these effects occur and what they are, be sure to visit our blog about: Optical Effects in Colored Gemstones.

  • Sold out
Koroit Boulder Opal 3.26 ct from Australia. Cabochon cut. Free form. I love the Koroit Opal with its intricate patterns, the precious opal embedded in the matrix fascinates me. In this case, the opal is the size of a pill with a very similar rounded shape, and no matter which side you are looking at, it is fascinating in any of them, its blue, red, green and lilac veins do not stop moving under the light. Just amazing. Koroit Boulder Opal 3.26 ct from Australia. Cabochon cut. Free form. I love the Koroit Opal with its intricate patterns, the precious opal embedded in the matrix fascinates me. In this case, the opal is the size of a pill with a very similar rounded shape, and no matter which side you are looking at, it is fascinating in any of them, its blue, red, green and lilac veins do not stop moving under the light. Just amazing.

Koroit Boulder Opal – 3.26 ct Freeform Cabochon from Australia

$460.00
$460.00
Boulder Wood Fossil Opal Pair from Australia Cabochon Cut 16.14 ct total. This beautiful untreated pair has many qualities, for starters they are double sided, they show a beautiful pattern with their neon blue, green, red, purple, yellow and orange peeking out from all sides and are a very good size, not too big or very small, so they will be very comfortable and not too heavy earrings. Boulder Wood Fossil Opal Pair from Australia Cabochon Cut 16.14 ct total. This beautiful untreated pair has many qualities, for starters they are double sided, they show a beautiful pattern with their neon blue, green, red, purple, yellow and orange peeking out from all sides and are a very good size, not too big or very small, so they will be very comfortable and not too heavy earrings.

Australian Boulder Wood Fossil Opal Pair – Double Sided – 16.14 ct

$366.00
$366.00
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
Australian Boulder Wood Fossil Opal Pair. Cabochon Cut 31.07 ct total. Australian Boulder Wood Fossil Opal Pair. Cabochon Cut 31.07 ct total.

Australian Boulder Wood Fossil Opal Pair 31.07 ct – Neon Play-of-Color

$440.00
$440.00
Amazing Australian Boulder Opal 20.75 ct. Cabochon Cut. Free Form Amazing Australian Boulder Opal 20.75 ct. Cabochon Cut. Free Form

Amazing Australian Boulder Opal – Blue-Green Veins – 20.75 ct

$328.00
$328.00
Opal Doublets and Red Garnets. This set is composed by a pair of bright Australian Opal doublet and two vivid Garnets. The perfect combination for your bespoke jewelry. Opal Doublets and Red Garnets. This set is composed by a pair of bright Australian Opal doublet and two vivid Garnets. The perfect combination for your bespoke jewelry.

Opal Doublets and Red Garnets – Vibrant Gemstone Set

$230.00
$230.00
Opal Doublets and Umbalite Garnets. This set is composed by a pair of bright Australian Opal doublet and two vivid Umbalites. The perfect combination for your bespoke jewelry. Opal Doublets and Umbalite Garnets. This set is composed by a pair of bright Australian Opal doublet and two vivid Umbalites. The perfect combination for your bespoke jewelry.

Australian Opal Doublets & Umbalite Garnets – Vibrant Gemstone Set

$230.00
$230.00
Opal Doublets and Emeralds. This set is composed by a pair of bright Australian Opal doublet and two vivid Zambian Emeralds. The perfect combination for your bespoke jewelry. Opal Doublets and Emeralds. This set is composed by a pair of bright Australian Opal doublet and two vivid Zambian Emeralds. The perfect combination for your bespoke jewelry.

Opal Doublets & Zambian Emeralds – Unique Gem Pair for Jewelry

$385.00
$385.00
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Opal Doublets and Emeralds. This set is composed by a pair of bright Australian Opal doublet and two vivid Zambian Emeralds. The perfect combination for your bespoke jewelry. Opal Doublets and Emeralds. This set is composed by a pair of bright Australian Opal doublet and two vivid Zambian Emeralds. The perfect combination for your bespoke jewelry.

Emerald and Opal Doublet Set – 5.73 ct of Colorful Elegance

$285.00
$285.00
Change Color Sapphire, Oval Cut 1.38 ct. This amazing gemstone is violet in daylight and purple under incandescent light. Its color is very bright and vivid, it will look very interesting in any piece of jewelry, and the best, the price. Change Color Sapphire, Oval Cut 1.38 ct. This amazing gemstone is violet in daylight and purple under incandescent light. Its color is very bright and vivid, it will look very interesting in any piece of jewelry, and the best, the price.

Color Change Sapphire – Oval Cut – 1.38 ct

$450.00
$450.00
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 – Violetish Blue to Purple Oval Gemstone

$1,450.00
$1,450.00
Metallic Rutilated Quartz 9.82 ct set. Outstanding set of rutilated quartz with beautiful inclusions. Perfect for your custom jewelry. 2.73 ct .. 9.93 * 9.83 * 4.73 mm 3.94 ct .. 10.23 * 10.35 * 5.80 mm 3.15 ct .. 9.93 * 9.72 * 5.39 mm Metallic Rutilated Quartz 9.82 ct set. Outstanding set of rutilated quartz with beautiful inclusions. Perfect for your custom jewelry. 2.73 ct .. 9.93 * 9.83 * 4.73 mm 3.94 ct .. 10.23 * 10.35 * 5.80 mm 3.15 ct .. 9.93 * 9.72 * 5.39 mm

Metallic Rutilated Quartz – Trillion Cabochon Set – 9.82 ct

$160.00 $0.00
$160.00
White Baroque Freshwater Pearls Pair 41.68 ct White Baroque Freshwater Pearls Pair 41.68 ct

White Baroque Freshwater Pearls Pair 41.68 ct – Unique Natural Shape

$368.00
$368.00
Polished Fire Opal 2.85 ct. Free form Polished Fire Opal 2.85 ct. Free form

Vivid Orange Fire Opal – Polished Freeform – 2.85 ct

$290.00
$290.00
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Australian Boulder Opal 25.86 ct Australian Boulder Opal 25.86 ct

Australian Boulder Opal – Cabochon Cut – 25.86 ct

$310.00
$310.00
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Fire Opal set. The perfect combination for your bespoke jewelry. 6.38 ct. Fire Opal set. The perfect combination for your bespoke jewelry. 6.38 ct.

Vivid Fire Opal Set 6.38 ct – Fancy Cut Trio

$396.00
$396.00

Unique and Rare Gemstones Special Effects

Sometimes colored gemstones exhibit striking optical effects. This is due to characteristic structures, flaws, or even inclusions and then beauty and rarity unite. Discover the play of color in opals, or the color change found in sapphires, diaspores, or garnets, the elegant oriental effect of pearls, or the mesmerizing cat's-eye effect in tourmalines. Perfect for those seeking something unique and exclusive. Shop now for the perfect gemstone, whether to personalize your jewelry or add to your collection!

MdMaya Gems

Related Collections Gemstones Special Effects

Discover the beauty of Trapiche rubies thanks to their asterism, the elegance and serenity of pearls with their magical oriental essence, and play with your jewelry, full of color and life thanks to the iridescence of ammolite or the interplay of opals. With each movement, you'll see different colors overlapping each other, always distinct and unique; or better yet, green in one light and red in another, the same stone in a different color. Let yourself be surprised and fill yourself with color.

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Welo Opal Stone 7.19 ct

Opal

Opal’s play of colors is unlike any other gem, is unique and exclusive.

Ammolite

Rare fossil gemstone with vivid, colorful iridescence.
White Baroque Freshwater Pearls Pair 49.21

Pearl

Pearls are associated with purity, chastity and stability in marriage.

Color Change Diaspore

This rare gem changes its color under different lighting conditions.

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.