Aquamarine — the sea-blue beryl

Aquamarine is blue beryl — emerald's calmer, tougher sibling, coloured by
iron.

Colour logic — the market pays for DEEP saturated blue; the pale icy
tones abundant on the market are lovely and correspondingly affordable.
Large clean crystals are common (beryl grows big), so size is not the
premium — saturation is.

Cut traditions — the long emerald cut follows the crystal's natural
prism; step cuts show the colour evenly. Hardness 7.5-8, no cleavage
drama, ultrasonic-safe: one of the easiest fine gems to live with.

The wedding-market favourite — sea-blue, March birthstone, pairs with
white metal — the contemporary trends course covers why certain
stones hold bridal favour.

For the beryl family's other member, see the emerald guide.

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Go deeper — free

Watch the free replays at the gem webinar library — the gem e-book is the written companion. When curiosity becomes commitment, the gemmology foundation course is the ladder's first rung (online entry: GT100e); dates on the calendar. Play Name That Gem to train the eye between sessions.

What students say

“Attended the courses here and it's worth way more than what you have to pay for. The instructors are all super approachable and welcoming everytime they see you. The tools needed are provided and you get to bring home the crafts that you make during the class. Even the class schedules are pretty flexible. I enjoyed myself here a lot and will definitely sign up for more classes.”

— Nebulla L. (Singapore) · published student feedback

“I will use the skills learnt to develop a line of metalsmithed jewellery.”

— Clarie K. (Singapore) · published student feedback

Free ways to explore

No sign-up, no payment — start with any of these.

WWatch a free gem webinarFREE
Full recorded sessions — the best free starting point.JJDMIS on YouTubeFREE
Course previews, blended-learning explainers and school life.FFree jewellery webinar replaysFREE
Recorded sessions on design and the jewellery industry.DDownload the gem e-bookFREE
The school's free guide to gems — pairs with the replays.

Keep exploring

How gems are graded — colour, clarity, cut, weight beyond diamondsHow coloured gemstones are graded — colour first, then clarity by species, cut quality andThe hardest gemstones — Mohs 8 and above for everyday wearThe hardest gemstones compared — diamond, corundum, topaz, chrysoberyl and spinel — with wAmber and coral — the organic gemsAmber and coral explained — fossilised resin and living skeleton, the treatment and imitatGem treatments explained — heat, oil, filling and diffusionThe gem treatment landscape explained — heat, oiling, filling, irradiation and diffusion —

See the online and blended options

Gemmology can be started fully online, and every classroom course at JDMIS has a video-supported path.

Visit jdmis.edu.sg