Lavora Diamonds vs Brilliant Earth vs James Allen vs Rare Carat: Where to Buy a Custom Lab-Grown Engagement Ring (2026)

Written by Lavora Diamonds. Last updated October 16, 2026.

TL;DR

Brilliant Earth, Blue Nile (which now sells the James Allen collection), and Rare Carat are strong options if you want to pick a pre-set design or search a large diamond inventory. Lavora Diamonds is built for one specific buyer: someone who wants a fully custom, lab-grown engagement ring with an IGI-certified center designed with them from scratch — 3D renders, revisions, and direct access to the founder. Pricing is handled with a soft written estimate on the same specs, not a quote-race guarantee.

October 2026 update: James Allen’s standalone website closed in mid-May 2026. The James Allen name continues as a collection sold through Blue Nile, which now services James Allen orders. The James Allen column below describes how the brand sold through early 2026.

The quick comparison

	Lavora Diamonds	Brilliant Earth	James Allen	Rare Carat
Business model	Direct-to-consumer custom design jeweler, text-first, no showroom	National retailer with showrooms	Large online inventory retailer	Diamond marketplace / aggregator
Customization	Fully custom from scratch — 3D designed with you, revisions before production	Semi-custom (choose setting + stone)	Semi-custom (choose setting + stone)	Stone search first; settings from partner vendors
Certification	IGI-certified center diamonds	GIA/IGI depending on stone	GIA/IGI depending on stone	GIA/IGI depending on listing
Who you work with	The founder, directly, by text	Sales team	Support team	Gemologist chat
See it before it's made	Photorealistic 3D render you approve and revise	Product photography	360° stone video	Varies by listing
How pricing works	Soft written estimate compared line by line on the same specs	Listed retail / promo pricing	Listed retail / promo pricing	Marketplace / partner pricing
Based in	Provo, Utah — serving the entire US	San Francisco, CA	New York, NY	New York, NY

Why prices differ for similar diamonds

Two rings with the same IGI-certified center stone specs — same carat, cut, color, clarity — can still be priced differently. Setting, metal, and delivery terms are often where quotes differ. Lavora’s model is text-first and custom-built once for you, so the written price reflects the stone, the setting, and the work.

How to compare quotes the right way

• The certificate. IGI or GIA report number, carat, cut grade, color, clarity. Verify it at igi.org. Same-spec stones are directly comparable; “similar looking” ones are not.
• The setting details. Metal weight, gold karat, prong style, hidden halo, pavé count. This is where quotes quietly diverge.
• What's included. 3D render revisions, resizing, warranty language, the IGI or GIA report, shipping insurance.

If you already have a quote from Brilliant Earth, Blue Nile (including the James Allen collection), Rare Carat, or a local jeweler, send it over for a line-by-line soft estimate. You leave knowing exactly what you are paying for.

Frequently asked questions

Is a lab-grown diamond from Lavora the same quality as one from a big retailer?

An IGI-certified center diamond is graded on the same 4C standards regardless of who sells it. The certificate, not the storefront, defines the grading.

How does Lavora handle a competitor quote?

Send any written quote for a comparable ring — same certified stone specs and setting details. Lavora compares it line by line and replies with a personal recommendation and a clear custom price. Soft estimate only.

Does Lavora have a showroom?

No. Lavora is a text-first custom jeweler based in Provo, Utah with no walk-in location. The entire process — design, 3D design approval, delivery — happens remotely, and every ring ships across the United States with tracking.

How long does a custom ring take?

Your first 3D render arrives in about 24–48 hours ($50 design fee, fully refundable and credited toward the ring), and production takes 4–5 weeks after you approve it; a $250 rush takes 14–21 days. Timelines are confirmed up front if you are working toward a proposal date.

Looking at other lab-grown jewelers?

Alternatives guides: Blue Nile · Brilliant Earth · Frank Darling · Ritani · Clean Origin · Grown Brilliance · Keyzar · With Clarity. Head-to-head: Rare Carat vs Lavora · James Allen vs Lavora · Brilliant Earth vs Lavora.

The bottom line

If you want to browse thousands of pre-made settings, the big retailers are good at that. If you want a ring that exists nowhere else, designed with you around an IGI-certified center diamond, that is what Lavora does.

Have a quote already, or a dream ring saved? Text (385) 592-7180 a photo or written quote, or start at Price My Ring for a personal recommendation and clear custom price—comparison on the same specs, not a quote-race guarantee.

Lavora Diamonds · 412 West Rivers Edge Drive, Provo UT 84604 · +1 (385) 592-7180