Trillion Tanzanite and Diamond Ring 1.09tcw 14kt Yellow Gold

This Trillion Tanzanite and Diamond Ring centres a substantial 0.93ct trillion-cut natural tanzanite paired with 0.16ct of G/H natural diamond accents, set in 14kt yellow gold for a total weight of 1.09 carats. At nearly a full carat in a single trillion-cut stone, this is a statement-scale tanzanite ring with the visual presence of an engagement-tier piece. The trillion cut produces three-fold geometric symmetry rare among coloured-stone rings, and the 14kt yellow gold metal warms tanzanite's natural trichroism toward the violet and burgundy axes for a richer overall colour presentation than the same stone would show in white gold.

Ring at a Glance

• Center stone: 0.93ct trillion-cut natural tanzanite
• Accent stones: 0.16ct natural diamonds, G/H colour, SI1/SI2 clarity
• Total carat weight: 1.09tcw
• Metal: 14kt yellow gold (purity 585)
• Stone origin: Tanzania
• Birthstone: December
• SKU: AJDGR-0076

About the Tanzanite

The 0.93ct centre is a natural mined tanzanite from the Merelani Hills of Tanzania, the only commercial tanzanite source in the world. At nearly a full carat, this centre stone is a substantial expression of tanzanite's signature trichroism (the property that makes the same stone display blue, violet, and burgundy components from different viewing angles). In a 14kt yellow gold setting, the warm metal supports the violet and burgundy axes of tanzanite's natural pleochroism, producing a softer overall colour presentation than the same stone would show in white gold. Tanzanite registers 6.5-7 on the Mohs hardness scale, durable enough for ring wear with reasonable care.

About the Setting

The 14kt yellow gold setting (585 purity) holds the trillion-cut centre stone in a prong setting with 0.16ct of diamond accents framing the shoulders. The trillion cut produces three-fold geometric symmetry rare in coloured-stone rings, the cut is technically demanding to execute well, the geometry must align with the natural axes of the stone to maximise colour and minimise visible inclusions. At 0.93ct, this trillion tanzanite is one of the larger trillion-cut tanzanites in our ring collection.

Why Shop With Treasured & Co.

• ✔ Free domestic shipping on every order, fully insured
• ✔ Affirm financing at checkout, four-payment plans available on orders over $100
• ✔ 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

Comparing Our Trillion Tanzanite Rings

Within our trillion tanzanite ring collection, this 1.09tcw piece is the larger statement-scale option at $1,750, with a substantial 0.93ct centre stone that places the ring in engagement-piece territory. The smaller 0.41tcw Trillion Tanzanite Ring (AJDGR-0075) at $1,220 carries a 0.32ct centre in the same design language, well-suited for daily wear, stacking, or as a more accessible entry into the trillion-cut tanzanite category. Same metal, same design family, the difference is centre stone scale and pricing.

Frequently Asked Questions

Is the tanzanite natural?

Yes. The 0.93ct trillion centre is a natural mined tanzanite from Tanzania. Like virtually all commercial tanzanite, the stone is heat-treated, a standard accepted trade practice that does not affect the natural origin.

How does this compare to the 0.41tcw Trillion Tanzanite Ring?

Both rings are trillion-cut natural tanzanite in 14kt yellow gold. This 1.09tcw piece is the larger statement-scale option (0.93ct centre, $1,750). The 0.41tcw version (AJDGR-0075) is the smaller everyday option (0.32ct centre, $1,220). Same design language and same metal.

Could this serve as an engagement ring?

Yes. At 0.93ct centre stone weight in a trillion cut, this ring is firmly in engagement-piece scale. Tanzanite as an engagement ring stone has been gaining recognition over the past two decades, particularly among buyers who want a coloured-stone alternative to traditional sapphire or diamond. Tanzanite's Mohs hardness of 6.5-7 is sufficient for engagement-ring wear with reasonable care.

Is the gold real 14kt yellow gold?

Yes. The setting is real 14kt yellow gold (purity 585), not gold-plated, gold-filled, or vermeil.

Can I view this ring in person?

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