Moonstone & Gemstone Guide
The Stones Behind the Jewelry
Every piece at Jimmy & Co starts with a stone. Not because a gemstone makes jewelry more expensive, but because a natural stone makes it more yours. There's something that happens when light hits a moonstone just right — a glow that moves with you. That kind of thing can't be manufactured. It just is.
Here's a closer look at the stones Jimmy works with most, and what makes each one worth knowing.
Rainbow Moonstone
Moonstone is a feldspar mineral, and what makes rainbow moonstone different from the classic variety is the blue flash — called adularescence — that appears when light catches it at certain angles. The stone itself is nearly colorless, but that inner glow can shift from blue to white to silver depending on how you're holding it or how the light falls.
Jimmy uses rainbow moonstone in pieces that are meant to feel alive. The glow is subtle enough for everyday wear but distinctive enough that people notice it. If you want something that looks different every time you put it on, this is a good place to start. See the Rainbow Moonstone Diamond Pendant Necklace or the Moonstone Stackable Ring in 14K Gold.
Labradorite
Labradorite looks dark and quiet until the light hits it — then it comes alive with flashes of teal, gold, and sometimes purple. The technical term is labradorescence. The practical experience is that you keep turning the stone, because there's always one more color hiding in it.
It's a more dramatic stone than moonstone, and it tends to anchor a piece rather than float inside it. Jimmy sets it in 14K gold, which holds up against the stone's natural depth without competing with it. The Cabochon Ring is a good example of labradorite in a clean setting that lets the stone do the work.
White Opal
White opal is a play-of-color stone, meaning the colors you see are light diffracting inside the stone's silica structure, not pigment. The result is that flash of pink, green, or blue that appears inside a milky white base. No two opals play the same colors at the same intensity, which means no two opal pieces are identical.
Opal is softer than sapphire or diamond, so Jimmy typically sets it with a protective halo of diamonds — both to catch light and to give the stone some physical security. The White Opal Diamond Halo Ring in 14K Gold is one of his most requested pieces for that reason.
Amethyst
Amethyst is a variety of quartz, and its purple comes from iron impurities inside the crystal. The color ranges from pale lavender to deep violet, and the depth varies stone by stone even within the same batch. It's also one of the most historically significant gems — worn by everyone from ancient Egyptians to medieval bishops, often as a symbol of clarity or spiritual protection.
Jimmy pairs amethyst with pink tourmaline in some pieces, which sounds like a lot of color but actually works. The warm pink softens the cool purple in a way that's balanced rather than busy. The Amethyst & Pink Tourmaline Stackable Ring in 14K Gold is worth seeing in person if you get the chance.
Citrine
Citrine is yellow to orange quartz, and its color comes from trace iron in the crystal. Natural citrine is relatively rare — most of what you see in the market is heat-treated amethyst that's been transformed to that warm amber tone. Either way, the color is one of the most wearable gem tones there is: it sits well against almost any skin tone and pairs naturally with yellow gold.
If you like warm-toned jewelry that doesn't feel heavy, citrine is worth considering. It has an easy, everyday quality that some of the darker or more dramatic stones don't.
Mozambique Garnet
Garnet comes in more colors than most people realize — green, orange, pink, colorless — but Mozambique garnet is a rich, warm red with a slight orange undertone that separates it from the darker, cooler Bohemian variety. The stones come from East Africa, and the color has a particular intensity that holds its own in 14K gold without needing accent stones to read as a jewelry piece.
It's the January birthstone, but it works well for anyone who wants a red stone that doesn't read as ruby and doesn't carry the same price point.
Peridot
Peridot is one of the few gems that comes in only one color — olive green — because the color isn't caused by impurities. It's intrinsic to the mineral itself (olivine). The green ranges from yellow-green to a deeper grass tone, and the saturation tends to be high even in smaller stones.
It's the August birthstone, but beyond that, peridot is genuinely distinctive. There aren't many natural gems that deliver that particular green without treatment. Jimmy uses it for people who want something a little unexpected — something that reads as intentional rather than default.