Rare Gemstone all over the world

At GIOIA Fine Jewellery, we pride ourselves on sourcing only the finest natural gemstones from around the world. Every gem we present is truly unique — from the regal Muzo green emeralds of Colombia to vivid sapphires of Sri Lanka and the neon brilliance Paraiba tourmaline of Brazil. Hand-selected by our co-founders, Clarence and Cheryl, each gemstone radiates exceptional sparkle and rarity, ensuring an exclusive treasure just for you in Singapore. Our ethically sourced rare gemstones showcase our commitment to quality, sustainability, and responsible practices, ensuring every piece is a rare gem to be cherished for generations. This is why GIOIA is renowned for our fine quality gemstones and trusted by many clients for its exceptional, rare pieces.

Whether you cherish the joy of wearing customised jewellery or a stunning gemstone engagement ring, rest assured these precious stones are rare treasures, carefully sourced from the world’s renowned mines. Our collection features Colombian emeralds, Sri Lankan and Burmese sapphires, Mozambique and Burmese rubies, spinels from Burma and Tanzania, as well as Mahenge and Paraiba tourmalines from Brazil and Mozambique, the gemstone list goes on.

Gemstone Jewellery

Our wide variety of precious gemstones — including emerald, sapphire, ruby, spinel, and Paraiba tourmaline — inspires creative, bespoke designs. Whether crafting traditional heirloom jewellery or modern fine pieces for everyday elegance, each creation offers a personalised and memorable experience, from initial design consultation to the final masterpiece.

Gemstone Engagement Ring & Wedding Bands

Coloured gemstone is becoming popular among many young couples. You can customised engagement ring or wedding bands with a wide range of colours. Customised a unique birthstone jewellery consist of your love one or family member birthstone. This statement jewellery with birthstone can be a heirloom jewellery for generation to come. We can share with you on more options and ideas, for your perfect wedding ring. Chat with us via our 24-7 online chat, just right on the bottom screen.

What determine the price of coloured Gems?

Rarity in Gemstone

One of the key factors that determines the price of coloured gemstones is rarity. For example, Paraiba tourmaline from Brazil is a prime illustration of how some gemstones can be rarer—and more expensive—than diamonds. An intense, vivid neon Paraiba tourmaline can cost two to three times the price of a 1.0ct quality diamond.

Similarly, Alexandrite gemstone, with its fascinating history rooted in Russia, is now mainly found in Brazil and Tanzania. Despite its origins, it remains one of the rarest gemstones on Earth. This gemstone’s unique colour-changing effect, shifting from bluish-green to purplish-pink, makes it highly sought-after, directly contributing to its high value. The rarity of these gemstones is one of the key factors that sets them apart from others, greatly elevating their price and making them highly sought after by collectors and investors. For example, Paraiba Tourmaline’s neon brilliance, along with the colour-changing magic of Alexandrite, make them some of the most expensive gemstones on the market.

This influential factor plays a very important role, especially when comparing them to semi precious gemstone, which, even when polished and cut into exceptional shapes, can never quite match the value of the finest quality emeralds. No matter how beautifully crafted, the rarity and inherent qualities of premium gemstones set them apart in a league of their own.

However, when comparing gemstones of the same fine quality, we evaluate several factors to determine their value. When evaluating coloured gemstones, several elements come into play: Colour, Origin, Enhancement, Carat, Clarity, and Cut. Each of these factors has a significant impact on the overall value of the gem. Together, these elements create a complete picture of the gemstone’s value, but it’s the combination of rarity and quality that ultimately sets the finest gemstones apart.

Unique Colour

With colour being the most crucial point when we acquire gemstone. From pastel to medium and intense vivid colour shade. Usually, the case where the value in gem increases according to the colour intensity. There is a threshold to the intensity as it approaching into too deep of shade to almost black gemstone, its value drop significantly.

Many believe that the rich bluish green in emerald is the most beautiful green you ever seen. The best green gemstone sapphire or tsavorite green garnet can never be comparable to emerald vivid green. Every gem has their own unique colour in them.

If you’re seeking a blue gemstone in a vibrant royal or cornflower blue, consider the blue sapphire instead of the excessively priced cobalt spinel, as the latter’s premium doesn’t offer proportional value.

Origin and Enhancement 

In the grading for major gemstones, such as Ruby, Sapphire and Emerald. Origin and Enhancement are key pointers that affect their value tremendously. Take, for example, a royal blue Kashmir sapphire can price many times more than a royal blue sapphire Sri Lanka. Unheated pigeon blood red ruby can price double the price of a heated pigeon blood red ruby.

Enhancement such as heat treatment is common from precious gemstones to semi-precious. It removes greenish colour in aquamarine to give remarkable blue in colour. Under the right conditions, impurities elements are release, result in attractive blue hue sapphire from unappealing milky and dull corundum gem.

Clarity in Gems

As we all know, gemstones crystal grow from natural minerals. The crystal structure determines its strength(hardness), colour(intensity). Disturbance during growth which leads to inclusion and distorted internal structure. The common term, Feather inclusion, Crystal inclusion, Needle inclusion. At times, such inclusions is a way to trace their country of origin and enhancement evidence. Most importantly, inclusions are birthmarks to identify the natural gem from ones that grew in laboratory or man-made.

At times inclusion provides a unique appearance which adds value in the gem. Certain inclusion can cause phenomenal effects. The unique cat’s eyes chrysoberyl, star sapphire and ruby, would not have appeared without inclusions in the gemstones.

Different cut shape in Gemstone

Gemstones are identified by their rough shape, each gem has a possible characteristic shape. Depending on their growing condition and environment. It helps to differentiate ruby from spinel rough, tourmaline from red garnet rough. This natural rough shape dictates finished shape of a particular gemstone.

Colour gems offer different unique cut shapes, and a certain shape is exclusively cut for particular gems. We see round shape in diamonds, emerald cut in emerald. The shape of a rough crystal usually determine the shape and size of the finished gem. Especially for rare and expensive gemstones, the cutter would minimise the wastage in the carat size, producing the largest stone possible.

Quality Gems in GIOIA

In GIOIA Fine Jewellery, it is our top priority to source for the highest quality gemstone instead of second grade quality to make up for the numbers. As discussed earlier, Colour, Origin, Enhancement, Carat, Clarity, Cut, are the key factors when we acquire quality gemstone. Unlike synthetic or man-made stone, they are natural gem mine underground. Almost impossible for us to replace another exactly the same.

Vivid colour and non treated gems, might not be in a particular shape. Perfect ideal cut shape and carat size, might not come in flawless clarity. In conclusion, there is always a tradeoff or prioritisation in the selection on coloured gemstone.

Quality Assurance in GIOIA

It is in our commitment to guarantee to you that the precious gem (i.e Emerald, Sapphire, Ruby, Spinel) you will possess is natural and, exactly as described. As such, upon receiving the final piece of bespoke jewellery, our clients will also receive a certificate which includes all the information about your gemstone, including size, weight, origin and any enhancements. The assurance of gemstone quality, from an independent party verification, provide a fair and neutral judgement.

Birthstone & Gems

We offer the rarest and finest quality gemstones, known for their exceptional beauty and rarity. Whether you’re seeking a unique heirloom piece, a bespoke jewellery item, or a personalised birthstone jewellery, each gem reflects our commitment to the highest standards. Birthstones hold a deep, personal significance, making them the perfect choice for creating a meaningful and customised piece of jewellery that resonates with your unique story.

Explore our collection of rare gemstones today and find the perfect piece to complement your style. Chat with our team for personalised consultations and to begin your custom jewellery journey! With our extensive experience in sourcing direct gemstones and sharing valuable gemstone insights, you will be equipped with in-depth knowledge to confidently choose the right jewellery for you.