Cancer Birthstone: Colors, Stones and Meanings

The Cancer birthstone is Pearl for June and Ruby for July. Cancer zodiac spans June 21 to July 22, covering two calendar months and two sets of gemstones. Moonstone and Alexandrite are also officially recognized as June birthstones that fall within Cancer's dates. This page covers all four Cancer birthstones, their colors, meanings, and which stones are considered luckiest for this zodiac sign.

What is the Cancer Birthstone?

Cancer is the fourth zodiac sign, ruled by the Moon, and spans June 21 to July 22. The birthstone for Cancer zodiac depends on birth month. Ruby is the primary stone for July Cancers. Pearl is the traditional stone for June Cancers. Moonstone and Alexandrite are the two additional June birthstones officially recognized by the American Gem Society.

All four stones fall under Cancer because the sign covers parts of both June and July.

Birthstone for Cancer June

Three gemstones are officially recognized as the June Cancer birthstone: Pearl, Moonstone, and Alexandrite.

Pearl — The Traditional June Cancer Birthstone

Pearl is the oldest and most widely recognized birthstone for Cancer June. It forms inside saltwater and freshwater mollusks through a natural layering process using a mineral called nacre. Pearl comes in white, cream, soft pink, and silver tones. It is associated with purity, emotional clarity, and wisdom. Its long-standing lunar symbolism ties directly to Cancer's ruling planet, the Moon.

Pearl is also the cancer pearl birthstone most recommended in traditional astrology for this sign.

Moonstone — The Cancer Crystal Birthstone

Moonstone is a feldspar mineral recognized by its distinctive blue-white optical glow, called adularescence. It is the moonstone cancer birthstone most closely linked to lunar energy. Because Cancer is ruled by the Moon, Moonstone is considered one of the most meaningful stones for this sign.

Ancient Roman and Hindu cultures both connected Moonstone to lunar deities and protection. Today, it is associated with intuition, emotional balance, and new beginnings.

Alexandrite

Alexandrite is a chrysoberyl variety and the rarest of the three June birthstones. It shifts from emerald green in natural daylight to reddish purple under indoor light. Alexandrite was added to the official June birthstone list in 1952 by the Jewelry Industry Council of America. It is associated with adaptability, luck, and transformation.

Birthstone for Cancer July

Ruby is the July Cancer birthstone. It is a variety of the corundum mineral species and earns its red color from trace amounts of chromium. Ruby ranks 9 on the Mohs hardness scale, second only to Diamond. For zodiac signs born in July, Ruby is the primary and most recognized cancer zodiac birthstone.

The cancer ruby birthstone has been treasured for over 2,500 years across Asia and Europe. In Sanskrit, it carries the name ratnaraj, meaning "king of precious stones." It is associated with passion, protection, courage, and vitality.

Cancer Birthstone Color

Cancer birthstone color varies by stone:

• Pearl: white, cream, or soft pink

• Moonstone: white with a blue-silver glow

• Alexandrite: green in daylight, reddish purple indoors

• Ruby: deep red, ranging to the prized "pigeon's blood" red

The cancer zodiac birthstone color most associated with June is white or soft silver. The July cancer birthstone color is deep red. Both colors reflect distinct aspects of the Cancer sign: emotional calm and inner intensity.

Cancer Birthstone Comparison 

Lucky Birthstones for Cancer Zodiac Sign

Pearl is widely regarded as the luckiest birthstone for Cancer. It forms in water, aligning with Cancer's Water element. Pearl has been used as a Cancer talisman in traditional astrology for centuries.

Ruby is the lucky stone for July Cancers. It is associated with confidence, inner strength, and protection against negative energy.

Additional cancer birthstones and crystals frequently cited in gemstone and astrology guides for this sign:

• Emerald: connected to heart energy and domestic harmony

• Rose Quartz: supports compassion and emotional balance

• White Topaz: associated with clarity and mental protection

• Labradorite: shares adularescence with Moonstone and supports intuition

These are not official monthly birthstones but are widely recognized as beneficial cancer birthstones and crystals for this zodiac sign.

Cancer Birthstone Jewelry

Cancer birthstone jewelry is most commonly worn as rings, necklaces, and earrings. Pearl and Ruby both have strong cultural associations with fine jewelry across all three formats.

A cancer birthstone ring in Pearl or Ruby is one of the most traditional gift choices for this sign. Those who prefer lab-created moissanite stones with comparable brilliance can find a range of options in the moissanite rings collection.

For necklace formats, a cancer birthstone necklace in Pearl strand or Ruby pendant style is a classic pick. Moissanite pendants offer a durable, lab-created alternative with strong light performance and accessible pricing.

Cancer birthstone earrings in Pearl drop and Ruby stud designs are popular across all age groups. Moissanite earrings in similar silhouettes work well for both everyday wear and formal occasions.

For a complete breakdown of every month's official stones, the birthstone guide by month covers all twelve zodiac signs. For deeper comparisons on gemstone properties, hardness, and origins, the guide to all gemstones is a useful reference.

Cancer ends at July 22. Birthdays from July 23 fall under Leo. The August birthstone guide covers Peridot and Spinel for that sign. For the water sign adjacent to Cancer in the earlier calendar, the March birthstone guide covers Aquamarine in full.

Glazed Diamonds carries a range of moissanite jewelry designed for birthstone-inspired styling. Explore the full collection for rings, pendants, earrings, and more.

Conclusion

Ruby and Pearl are the two main Cancer birthstones. Pearl is the traditional stone for June Cancers, carrying associations with purity and emotional calm. Ruby belongs to July Cancers, representing passion, courage, and protection. Moonstone sits alongside both as a lunar crystal with a direct connection to Cancer's ruling planet. For anyone choosing cancer birthstone jewelry, Pearl, Ruby, and Moonstone are the most recognized and meaningful starting points for this zodiac sign.