Hexagon Cut Alexandrite Engagement Ring in 14K Solid Rose Gold

Some stones sparkle; this one performs. This hexagon alexandrite ring sets a lab-grown alexandrite inside six crisp facet lines and warm solid rose gold — bluish green under daylight, shifting to a purplish red glow in warm evening light. It is one of the most distinctive silhouettes in our alexandrite engagement rings collection, made to order in 10K, 14K, or 18K solid rose gold.

Why the hexagon cut suits alexandrite

A hexagon is cut with long, open facets rather than the tight sparkle pattern of a round brilliant, so the eye reads the stone’s body color first — exactly what you want from a gem whose whole point is changing color. The six straight sides give the ring a modern, architectural profile that still feels balanced on the finger at 7.0 x 7.0 mm. If geometric stones speak to you, compare this silhouette against our other hexagon engagement rings before you decide.

A color change you can actually see

Alexandrite is famous as an “emerald by day, ruby by night” stone. Under daylight or cool white light, this lab-grown alexandrite shows bluish green and teal tones; under incandescent bulbs or candlelight it turns purplish red, with violet and magenta in between. Because it is grown in a controlled environment, the color change is strong and repeatable rather than the faint shift many natural stones show — our guide to how alexandrite changes color explains the science in plain English.

To be clear about what you are buying: this is a real alexandrite, created in a lab with the same chemical composition, hardness, and color-change behavior as mined material. If you are weighing the two, read lab-grown vs natural alexandrite — the short version is that lab growth is how a strong color change becomes attainable.

Warm rose gold, three karats

Rose gold is the quiet advantage here: its warm, rosy tone flatters the stone’s evening phase, so the purplish-red glow looks even richer against the band. Choose solid 10K rose gold for maximum hardness and value, 14K for the classic balance of durability and color, or 18K for the deepest, warmest blush. Every option is solid gold all the way through. Our 10K vs 14K vs 18K karat guide compares them in detail, and you can see how this warm tone carries across our rose gold rings.

Accent stones: moissanite or natural diamond

The center stone is framed by your choice of accents. Moissanite accents (D color, VVS1 clarity) bring maximum fire for the price; natural diamond accents (G/H color, I1 eye-clean clarity, conflict-free) are the traditional heirloom choice. On a slim 1.6 mm band, either option keeps the hexagon the star while adding a fine line of sparkle.

A stone with a story

Alexandrite is the birthstone for June and the traditional gem of the 55th wedding anniversary, long associated with good fortune and balance — a stone said to hold both halves of a whole, like the two people exchanging it. For a ring that marks a promise, a proposal, or a milestone, few gems carry the metaphor as literally as one that lives in two colors.

Specifications

Sizing & care

Select your size from the drop-down menu. Sizing can vary slightly between jewelers — often up to half a size between different sizers and mandrels — so we recommend confirming yours with our ring size guide before ordering.

At 8.5 on the Mohs scale, alexandrite is one of the hardest colored gemstones — just below sapphire — and well suited to daily wear. Clean the ring with warm water, mild soap, and a soft brush, then pat dry. Store it separately from harder stones like diamonds, and remove it for heavy lifting or abrasive work to keep the rose gold’s polish bright. Every ring ships in a free luxury ring box with free USA shipping.