What is the difference between full eternity and half eternity bands?

A full eternity band has diamonds set all the way around the ring for sparkle from every angle. A half eternity band has diamonds set across the top only, with a plain band underneath, making it more comfortable for everyday wear and easier to stack with other rings.

Why does the price change with ring size for full eternity bands?

A full eternity band needs diamonds to circle the entire ring, so a larger ring size requires more diamonds to complete the circle, which slightly increases the price. Half eternity bands use a fixed number of diamonds across the top regardless of size, so their price stays the same at any size.

Are the diamonds in eternity bands IGI certified?

Yes. Diamonds are D-E color, VS to VVS clarity, IGI certified. We email the certificate for your review before the ring ships.

Can I get a colored gemstone accent on an eternity band?

Yes. Half eternity styles are available with ruby, blue sapphire, or pink sapphire accents alongside the diamonds.

How do I verify my diamond's IGI certificate?

Enter the report number from your certificate directly on the official IGI website at igi.org.

Collection: Lab-Grown Diamond Eternity Bands | Full & Half

Q: Do eternity bands come with a warranty?

Yes. All finished eternity bands include one year of complimentary repair, covering prong checks, polishing, and resizing.

MadisonDia Lab-Grown Diamond Eternity Bands. Full eternity (diamonds all the way around) and half eternity (diamonds across the top), every diamond D-E-F color / VS-VVS clarity, graded against our MISI™ sparkle index. Optional ruby, blue sapphire, or pink sapphire accents available.

Hong Kong Government "No Fakes" certified brand • BUYMA 5.0 rating (1,343+ verified reviews). Backed by the same authenticity standard Madison Avenue has applied as an authorized dealer for Versace, Hugo Boss, and Moschino for over a decade.

Full Eternity or Half Eternity — What's the Difference

FULL ETERNITY

Diamonds All the Way Around

Sparkle from every angle. Because a full circle needs more diamonds as the ring gets bigger, price rises slightly with ring size — this is the one style where that happens.

HALF ETERNITY

Diamonds Across the Top, Flat Underneath

More comfortable for everyday wear and stacking with other rings. Same diamond count regardless of finger size, so the price stays the same across sizes 9–13.

GRADING STANDARD

D-E-F Color, VS-VVS Clarity, MISI™-Verified

At this melee size (1.5mm–3mm, well under 1ct), cut precision can't be reliably verified stone-by-stone, so we grade each diamond D-E-F color and VS-VVS clarity in-house against our MISI™ sparkle index. Individual IGI certification and 3EX cut grading are reserved for center stones 1ct and above.

AFTER-SALES

1-Year Complimentary Repair

All finished eternity bands include one year of complimentary repair, covering prong checks, polishing, and resizing.

Reference Prices (18K, USD — calculated reference)

Full eternity prices shown are for size 9; expect a small increase at larger sizes. Half eternity is the same price at any size.

STYLE	STONE SIZE	FROM
Full Eternity	2.5mm	$1,185
Full Eternity	3mm	$1,433
Half Eternity, Curved	1.5mm	$734
Half Eternity	2.1mm / 3mm	$987
Half Eternity, Ruby or Blue Sapphire Accent	2.3mm	$971
Half Eternity, Pink Sapphire Accent	1.5mm	$873

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Collection: Lab-Grown Diamond Eternity Bands | Full & Half