This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them. Informa PLC's registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726.
Santa Maria aquamarines (Picture courtesy of AIGS)
AIGS colour reference for Santa Maria aquamarines (Picture courtesy of AIGS)
Sample of AIGS Santa Maria Aquamarine grading report (Picture courtesy of AIGS)
The Asian Institute of Gemological Sciences (AIGS) has introduced grading reports for Santa Maria aquamarines, setting clear colour standards for the trade name.
Aquamarines usually come in lighter tones and range from greenish-blue to blue-green. According to AIGS, most aquamarines in the market have been heated to obtain rich, intense colours. Eye-clean, unheated aquamarines are thus highly sought after due to their rarity.
AIGS grades as Santa Maria those aquamarines with a blue colour in medium saturation and without brown or yellow tints. Aquamarines with low saturation, low clarity and dark tones do not meet the Santa Maria criteria.
Sparkling selection of coloured gems set to impress at JGW 2023
You have /7 days to view our content without registering.
Thank you for subscribing to JNA digital content on JewelleryNet.
You have /7 days to view our content without registering.
To have full access to our exclusive stories and expert industry coverage, log in using your JewelleryNet membership account details, which will be sent to your email within seven working days.