8mm vs 10mm Beads: Which Bracelet Size Fits a Child's Wrist?

Neither option has a different listed wrist range: Sunstruck lists 8mm beads, while Little Planet and Moss Garden list 10mm beads, and all list a wrist range of 13–17cm. Compare the child's wrist measurement with that range rather than choosing fit by bead diameter alone.

Last updated: October 3, 2026

By Theo Marchetti · Sourcing & Materials Editor

Which is better for a child's wrist, 8mm or 10mm beads?

Neither option offers a different listed wrist range: Sunstruck, Little Planet and Moss Garden all list 13–17cm. Their bead diameters differ, but that does not establish a difference in wrist fit.

Measure the child's wrist and compare it with the listed range before choosing between these bracelets. For measuring instructions, see how to take a wrist measurement for a bracelet.

How do the in-stock bracelets compare?

The compared bracelets differ in listed bead diameter, materials and price, but share the same listed wrist range.

Bracelet	Listed bead diameter	Listed wrist range	Listed materials	Price
Sunstruck	8mm	13–17cm	Citrine / lemon quartz (raw nugget), clear quartz, sterling silver	$115
Little Planet	10mm	13–17cm	Aquamarine, moonstone, gold-plated hardware	$95
Moss Garden	10mm	13–17cm	Moss agate, clear quartz, sterling silver	$95

These listing dimensions do not establish comfort or resistance to impacts.

Does the moonstone listing establish durability?

No: Little Planet lists moonstone, but a product label alone does not verify mineral identity or establish the bracelet's durability.

GIA's moonstone care guide describes moonstone as having poor toughness and identifies strong impacts as a breakage risk. This is mineral-level guidance, not a tested rating for Little Planet.

GIA also distinguishes rainbow moonstone, a trade name for certain labradorite, from orthoclase moonstone. A trade name alone does not verify a particular product's mineral identity; the listing therefore does not justify assigning a definitive GIA toughness rating to its components.

How should these bracelets be cleaned?

The supplied gemstone guidance does not establish a cleaning method for these complete bracelets.

For moonstone, GIA recommends soap and warm water and excludes steam and ultrasonic cleaning. That advice concerns the gemstone, not unverified bracelet cords or metal finishes, and should not be treated as cleaning approval for the complete Little Planet bracelet.

Choose 8mm if…, choose 10mm if…

Choose 8mm if you prefer that listed bead diameter: the in-stock match is Sunstruck, at $115.

Choose 10mm if you prefer that listed diameter and the $95 price point: the in-stock matches are Moss Garden and Little Planet. Moss Garden lists moss agate and clear quartz; Little Planet lists aquamarine and moonstone.

For either choice, compare the child's measured wrist with the listed 13–17cm wrist range. Neither bead diameter establishes a better fit by itself.

FAQ

Can I buy an adult crystal bracelet and expect it to fit a child?

Do not assume fit from bead diameter. Sunstruck, Little Planet and Moss Garden each list a wrist range of 13–17cm; compare the child's measured wrist with that range.

Is a moonstone bracelet a good choice for an active child?

GIA describes moonstone as having poor toughness and identifies strong impacts as a breakage risk. Little Planet lists moonstone, but that label does not establish a tested durability rating for the bracelet or verify the mineral identity of its components.

Can a child's crystal bracelet go in an ultrasonic cleaner?

GIA excludes ultrasonic cleaning for moonstone. This mineral-level guidance does not establish a cleaning method for the complete bracelets compared here, including their cords and metal finishes.