Pear Tanzanite and Diamond Ring 1.79tcw 14kt White Gold

This Pear Tanzanite and Diamond Ring centres a 1.69ct pear-cut natural tanzanite in a 0.10tcw diamond halo, set in 14kt white gold for a total carat weight of 1.79tcw. The pear cut elongates visually on the finger and displays tanzanite's signature blue-violet trichroism along two axes simultaneously. Tanzanite is sourced from a single 14-square-mile zone at the foot of Mount Kilimanjaro in Tanzania, and existing deposits are projected by geologists to be depleted within a generation, which makes this stone roughly a thousand times rarer than diamond by geological scarcity.

Ring at a Glance

• Center stone: 1.69ct pear-cut natural tanzanite
• Accent stones: 0.10tcw natural round diamonds, G/H colour, SI1/SI2 clarity
• Total carat weight: 1.79tcw
• Metal: 14kt white gold (purity 585)
• Setting: Pear halo with prong-set centre
• Total ring weight: 5.10g
• Stone origin: Tanzania (only source on earth)
• Birthstone: December
• SKU: AJDGR-0035

About the Tanzanite

The 1.69ct centre is a natural mined tanzanite from the Merelani Hills near Mount Kilimanjaro in Tanzania, the only commercial source for tanzanite in the world. Tanzanite is the trade name for the blue-violet variety of zoisite, and is one of three modern December birthstones (alongside turquoise and zircon), added to the American Gem Trade Association list in 2002. Tanzanite is famously trichroic: the same stone displays three different colours depending on viewing angle (blue, violet, and burgundy), which gives the gem its complex visual character. The pear cut on this centre stone is selected to display the trichroism across the elongated length of the stone. Tanzanite registers 6.5 to 7 on the Mohs hardness scale, durable for ring wear with reasonable care.

About the Setting

The 14kt white gold setting (purity 585) is fabricated as a halo around the pear-cut centre stone, with 0.10tcw of natural round diamonds in G/H colour and SI1/SI2 clarity providing brightness. White gold is the preferred metal choice for tanzanite because the cool silvery tone enhances the blue-violet axis of the stone's trichroism, pushing colour perception toward the deeper saturation collectors look for. Yellow gold by contrast can push tanzanite's apparent colour toward gray. Total ring weight is 5.10g, substantial for a tanzanite ring at this carat range.

Why Shop With Treasured & Co.

• ✔ Free domestic shipping on every order, fully insured
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• ✔ In-store viewing at our Astoria, NY showroom: 30-06 Steinway St, Astoria, NY 11103
• ✔ Available in standard sizes, complimentary fitting consultations on request
• ✔ 30-day return policy on standard pieces, lifetime cleaning and polishing
• ✔ Family-owned jeweler since 1990, every piece inspected by our master goldsmith

Why Tanzanite Is Considered Rarer Than Diamond

Tanzanite was discovered in 1967 in the Merelani Hills of northern Tanzania, the only place on earth where commercial-grade tanzanite occurs. Geological surveys project that existing tanzanite deposits will be substantially depleted within a generation, this is the basis for the industry's claim that tanzanite is roughly a thousand times rarer than diamond. The combination of single-source origin, projected depletion, and unique trichroic colour has made tanzanite a recognised collectible coloured gemstone, particularly for engagement and statement pieces where the buyer wants something distinctive from the more conventional sapphire or diamond options. At the 1.69ct centre stone size in this ring, the tanzanite is substantial enough to function as an engagement ring centre stone.

Frequently Asked Questions

Is the tanzanite genuine and natural?

Yes. The 1.69ct centre is a 100 percent genuine, natural tanzanite from Tanzania, not synthetic, lab-grown, simulant, or glass. Like virtually all commercial tanzanite, the stone is heat-treated, this is a standard and accepted practice that brings out the blue-violet colour from the brownish raw material. Heat treatment is not the same as a chemical or colour-altering process and does not affect the stone's natural origin.

Is tanzanite durable enough for daily wear?

Tanzanite registers 6.5 to 7 on the Mohs hardness scale, softer than diamond (10) or sapphire (9) but harder than opal, pearl, or turquoise. It is well-suited for an engagement ring or daily-wear ring with basic care: avoid hard impact, ultrasonic cleaners, and steam cleaning. Clean with mild soap, warm water, and a soft brush.

Why white gold rather than yellow gold for tanzanite?

White gold's cool, silvery tone enhances the blue and violet components of tanzanite's natural trichroism, producing the deeper saturated colour collectors associate with fine tanzanite. Yellow gold can push tanzanite's apparent colour toward gray, which is why white gold (or platinum) is the preferred setting for blue-toned tanzanite. Compare against our 14kt yellow gold trillion tanzanite rings (AJDGR-0075, AJDGR-0076) which take a different aesthetic approach with warm metal.

Is tanzanite a December birthstone?

Yes. Tanzanite is one of three modern December birthstones (alongside turquoise and zircon). It was officially added to the American Gem Trade Association birthstone list in 2002, the first new addition in nearly a century, in recognition of tanzanite's commercial rise and single-source rarity.

Can I view this ring in person before purchasing?

Yes. This ring is available for in-store viewing at Treasured and Co., 30-06 Steinway St, Astoria, NY 11103. Store hours are Monday through Saturday 10:30AM to 6:30PM and Sunday 11:30AM to 5:30PM. Call (718) 956-0001 to confirm availability before visiting.