✨ 3D CAD Modeling & Lost-Wax Casting Studios • San Leandro, CA

Custom Jewelry Designers & 3D CAD Ring Studios in San Leandro, CA [Oct 2026]

Collaborate directly with bespoke goldsmiths, 3D CAD digital modelers, and lost-wax casting ateliers along E 14th St, 942 Arguello Dr, E Juana Ave, 155 Parrott St (covering postal codes 15555, 94578, 94577, 14393) to create one-of-a-kind engagement rings or redesign inherited family heirlooms.

← All 10 San Leandro Stores 🪙 Sell Gold & Diamonds 🛠️ Jewelry & Watch Repair 💍 Engagement Rings ✨ Custom 3D CAD Design 👑 22k Gold & Bullion 📜 GIA Appraisals

San Leandro, CA Local Market Overview (Oct 2026)

Commissioning custom jewelry in San Leandro, California allows you to transform a sketch, photo, or inherited family diamond into a precision-crafted 14k/18k gold or platinum piece. Across San Leandro, 10 verified studios along E 14th St, 942 Arguello Dr, E Juana Ave, 155 Parrott St offer in-house 3D CAD rendering, 3D resin/wax try-on prototypes, and hand micro-pavé stone setting.

Leading bespoke design houses in San Leandro include My Gold Buyer, Rainbow Unicorn Bling, John's Jewelers, backed by 233 local client reviews (4.5★ average).

Oct 2026 Bespoke Production Guide

Custom 3D CAD Jewelry Design Stages & Timelines in San Leandro

Custom Design Stage	What Happens in Studio	Typical Timeline
1. Stone Measurement & Sketch	Millimeter caliper mapping of heirloom or loose center stones & metal selection	Day 1 (In-Store Consultation)
2. 3D CAD Digital Render & Wax Print	Photorealistic 360° CAD angles + 3D printed wax model to try on your finger	3 – 7 Business Days
3. Lost-Wax Casting & Master Setting	Solid 14k/18k gold or 950 platinum casting, microscope stone setting & polish	10 – 14 Business Days

Quick Comparison: Top ✨ Custom 3D CAD Design Specialists in San Leandro

Showroom Name	Location / Corridor	Rating & Reviews	Direct Phone
#1 My Gold Buyer	Bay fair center mall#206, 15555 E 14th St, San Leandro, CA 94578, USA	⭐ 4.9 (16)	(510) 458-0424
#2 Rainbow Unicorn Bling	942 Arguello Dr, San Leandro, CA 94578, USA	⭐ 4.7 (40)	In-Store
#3 John's Jewelers	15555 E 14th St, San Leandro, CA 94578, USA	⭐ 4.8 (27)	(510) 278-3000
#4 Museum of Jewelry	1500 E Juana Ave, San Leandro, CA 94577, USA	⭐ 4.6 (27)	(800) 835-2700
#5 Sam's Jewellers	15555 E 14th St, San Leandro, CA 94578, USA	⭐ 4.5 (35)	(510) 460-9966
#6 Mandy's Jewelers	1465 CA-185, San Leandro, CA 94577, USA	⭐ 4.6 (13)	(510) 352-7262
#7 Allphin Jewelers	155 Parrott St, San Leandro, CA 94577, USA	⭐ 4.5 (21)	(510) 357-3442
#8 Kim Brothers Jewelry	14393 Washington Ave, San Leandro, CA 94578, USA	⭐ 4.4 (23)	(510) 357-4069

Verified Showrooms in San Leandro, CA

#1 Verified San Leandro Specialist ⭐ 4.9 (16 reviews)

My Gold Buyer

📍 Bay fair center mall#206, 15555 E 14th St, San Leandro, CA 94578, USA

My Gold Buyer is an esteemed jewelry showroom and custom design studio in San Leandro. Offering fine handcrafted jewelry, diamond collections, and master artisan craftsmanship.

Fine JewelryCustom Consultation

📞 (510) 458-0424 🌐 Website

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#2 Verified San Leandro Specialist ⭐ 4.7 (40 reviews)

Rainbow Unicorn Bling

📍 942 Arguello Dr, San Leandro, CA 94578, USA

Rainbow Unicorn Bling is an esteemed jewelry showroom and custom design studio in San Leandro. Offering fine handcrafted jewelry, diamond collections, and master artisan craftsmanship.

Fine JewelryCustom Consultation

🌐 Website

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#3 Verified San Leandro Specialist ⭐ 4.8 (27 reviews)

John's Jewelers

📍 15555 E 14th St, San Leandro, CA 94578, USA

John's Jewelers is an esteemed jewelry showroom and custom design studio in San Leandro. Offering fine handcrafted jewelry, diamond collections, and master artisan craftsmanship.

Fine JewelryCustom Consultation

📞 (510) 278-3000

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#4 Verified San Leandro Specialist ⭐ 4.6 (27 reviews)

Museum of Jewelry

📍 1500 E Juana Ave, San Leandro, CA 94577, USA

Museum of Jewelry is an esteemed jewelry showroom and custom design studio in San Leandro. Offering fine handcrafted jewelry, diamond collections, and master artisan craftsmanship.

Fine JewelryCustom Consultation

📞 (800) 835-2700 🌐 Website

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#5 Verified San Leandro Specialist ⭐ 4.5 (35 reviews)

Sam's Jewellers

📍 15555 E 14th St, San Leandro, CA 94578, USA

Sam's Jewellers is an esteemed jewelry showroom and custom design studio in San Leandro. Offering fine handcrafted jewelry, diamond collections, and master artisan craftsmanship.

Fine JewelryCustom Consultation

📞 (510) 460-9966 🌐 Website

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#6 Verified San Leandro Specialist ⭐ 4.6 (13 reviews)

Mandy's Jewelers

📍 1465 CA-185, San Leandro, CA 94577, USA

Mandy's Jewelers is an esteemed jewelry showroom and custom design studio in San Leandro. Offering fine handcrafted jewelry, diamond collections, and master artisan craftsmanship.

Fine JewelryCustom Consultation

📞 (510) 352-7262

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#7 Verified San Leandro Specialist ⭐ 4.5 (21 reviews)

Allphin Jewelers

📍 155 Parrott St, San Leandro, CA 94577, USA

Allphin Jewelers is an esteemed jewelry showroom and custom design studio in San Leandro. Offering fine handcrafted jewelry, diamond collections, and master artisan craftsmanship.

Fine JewelryCustom Consultation

📞 (510) 357-3442 🌐 Website

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#8 Verified San Leandro Specialist ⭐ 4.4 (23 reviews)

Kim Brothers Jewelry

📍 14393 Washington Ave, San Leandro, CA 94578, USA

Kim Brothers Jewelry is an esteemed jewelry showroom and custom design studio in San Leandro. Offering fine handcrafted jewelry, diamond collections, and master artisan craftsmanship.

Fine JewelryCustom Consultation

📞 (510) 357-4069

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#9 Verified San Leandro Specialist ⭐ 4.3 (18 reviews)

Museum of Jewelry

📍 1234 View Dr, San Leandro, CA 94577, USA

Museum of Jewelry is an esteemed jewelry showroom and custom design studio in San Leandro. Offering fine handcrafted jewelry, diamond collections, and master artisan craftsmanship.

Fine JewelryCustom Consultation

📞 (800) 835-2700 🌐 Website

View Store Profile →

#10 Verified San Leandro Specialist ⭐ 3.9 (13 reviews)

Cesar's Jewelry

📍 159 Pelton Center Way, San Leandro, CA 94577, USA

Cesar's Jewelry is an esteemed jewelry showroom and custom design studio in San Leandro. Offering fine handcrafted jewelry, diamond collections, and master artisan craftsmanship.

Fine JewelryCustom Consultation

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Frequently Asked Questions: ✨ Custom 3D CAD Design in San Leandro

Can jewelers in San Leandro melt my old gold or reset family diamonds into a new custom ring?

Yes. Bespoke studios in San Leandro such as My Gold Buyer, Rainbow Unicorn Bling, John's Jewelers routinely unset heirloom diamonds and gemstones, credit or refine your existing gold, and cast a brand-new 3D CAD mounting tailored to your exact finger size.

How long does custom engagement ring design take in San Leandro?

Most custom 3D CAD jewelry projects in San Leandro, California take 2 to 3 weeks from initial digital CAD approval and wax prototype try-on to final casting and stone setting.

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Live Gold & Diamond Calculators

Use our free gemological tools before visiting any showroom in San Leandro.

🪙 Gold Scrap Payout Calculator 💎 Diamond Carat Price Guide 💍 Ring Size Converter

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