💦Aquamarine is a silicate containing beryllium and aluminium, and is collectively known as a coloured gemstone along with garnet and tourmaline. Aquamarine’s colour is sky blue to sea blue or blue with green, its colour formation is mainly due to the inclusion of trace divalent ferric ions (Fe2+), to the bright clean and flawless, intense brilliant blue to light blue is the best.
💦Legend has it that aquamarine is produced at the bottom of the sea and is the essence of seawater. Therefore, mariners use it to pray to the god of the sea to bless the safety of navigation, called the “God of Fortune Stone”. It is also used as the “birthstone of March”, symbolising “calmness and courage”, “happiness and longevity”.
✅Colours of aquamarine
💙 The main colours of aquamarine are: light blue、medium blue、dark blue、deep blue、double blue、Santa Maria、greenish blue、green blue.
✅Aquamarine colour grading
💙There are four international grades of aquamarine colour: Blue、Vivid Blue 、 SantaMaria Color 、Exceptional Santa Maria Color.
💙Some people in the industry like to classify the aquamarine color level from high to low, in order of Santa Maria, 5A, 4A, 3A, 2A, 1A, from dark blue gradually lighter, the lower the saturation, the lighter the color, the higher the saturation of the color is darker, the higher the value ⬆️. AAAA is already a very high grade, accounting for only 10% of all aquamarine, and AAA is a perfectly acceptable color for everyday wear.
✅ About Santa Maria Aquamarine
💙It is the commercial name launched by GUILD Gem Laboratory for the top aquamarine in the GUILD color grading system, only the blue aquamarine with high saturation and appropriate brightness is granted the color description of “Santa Maria color”.
💙Santa Maria is a gorgeous, saturated, non-brown-yellow sea blue; Santa Maria aquamarine is very clean to the naked eye, and its fire color is extremely bright! At present, in the trade, “Santa Maria Color”is considered to be the best quality of aquamarine blue. The color of aquamarine can reach Santa Maria color is very rare.
✅ Value Judgment
💙Aquamarine quality evaluation from the colour, clarity, cut and weight. Pure colour, no grey, no dichroic, colorful and bright the highest value. Some aquamarine with directional inclusions can be processed into cat’s eye effect or starlight effect, and aquamarine with special optical effect is more expensive. Colour, clarity, cut the same aquamarine, the greater the carat weight, the higher the value.
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