Wuzhou factory · direct wholesale · MOQ 1 pc service@holycome.com WhatsApp +86 18078079070

Journal · 177 notes

Stones & grading

Written for buyers rather than for search engines: what a specification actually means, where an order usually goes wrong, and what to ask before you pay a deposit.

Stones & grading · Oct 2026

Heat-Treated vs Untreated Sapphires, Explained

Sapphires are commonly heat-treated. Learn what heat treatment does, why it is standard, and how untreated stones differ in price.

Heat-Treated vs Untreated Sapphires, Explained — HOLYCOME journal

Stones & grading · Sep 2026

Nickel-Free Silver Alloys: Meeting EU REACH and Nickel Directive Rules

EU REACH Annex XVII limits nickel release to 0.5 ug/cm2/week for skin-contact jewelry. How nickel-free silver alloys are specified and tested.

Nickel-Free Silver Alloys: Meeting EU REACH and Nickel Directive Rules — HOLYCOME journal

Stones & grading · Sep 2026

Chrome Diopside: Intense Green at an Honest Price

Chrome diopside is one of the most saturated green gems you can buy. Learn its sources, its softness, and how we set it safely at the bench.

Chrome Diopside: Intense Green at an Honest Price — HOLYCOME journal

Stones & grading · Sep 2026

Underrated Color Gems for Engagement Rings Beyond Sapphire

An atelier walks through five underrated colored gemstones for engagement rings: tourmaline, morganite, spinel, aquamarine, and garnet.

Underrated Color Gems for Engagement Rings Beyond Sapphire — HOLYCOME journal

Stones & grading · Sep 2026

Titanium Steel Jewelry Pros and Durability

Titanium steel jewelry: what it is, how it differs from pure titanium and sterling silver, hypoallergenic properties, scratch resistance, price, and care.

Titanium Steel Jewelry Pros and Durability — HOLYCOME journal

Stones & grading · Sep 2026

Lab Created Gemstones Types and Uses

Lab created gemstones: what they are, how they are grown, types from sapphire to emerald, how they compare to natural, price, ethics, and durability.

Lab Created Gemstones Types and Uses — HOLYCOME journal

Stones & grading · Sep 2026

Gemstone Hardness Scale and Mohs Ranking

Gemstone hardness scale: the Mohs ranking from talc to diamond, why hardness matters, which gems suit daily wear rings, and how it differs from toughness.

Gemstone Hardness Scale and Mohs Ranking — HOLYCOME journal

Stones & grading · Sep 2026

Cubic Zirconia vs Moissanite

Cubic zirconia vs moissanite: compare hardness, brilliance, fire, weight, price, longevity, and how to tell them apart before you buy.

Cubic Zirconia vs Moissanite — HOLYCOME journal

Stones & grading · Sep 2026

Jewelry Alloy vs Sterling Silver

Jewelry alloy vs sterling silver: compare composition, nickel, skin reaction, durability, tarnish, weight, price, and hallmarks before buying.

Jewelry Alloy vs Sterling Silver — HOLYCOME journal

Stones & grading · Sep 2026

Rhodium Plating on Jewelry Explained

Rhodium plating on jewelry: what it is, how it is applied, why white gold needs it, how long it lasts, signs of wear, and cost of re-plating.

Rhodium Plating on Jewelry Explained — HOLYCOME journal

Stones & grading · Sep 2026

18K Gold vs Platinum

18K gold vs platinum: compare purity, weight, color, durability, price, hypoallergenic properties, and maintenance to pick your ring metal.

18K Gold vs Platinum — HOLYCOME journal

Stones & grading · Sep 2026

Lab Grown Diamond vs Moissanite

Lab grown diamond vs moissanite: compare chemistry, brilliance, hardness, price per carat, certification, resale, and how to choose for an engagement ring.

Lab Grown Diamond vs Moissanite — HOLYCOME journal
Factory directWuzhou workshop, no trading layer
MOQ 1 pieceSamples before bulk
GRA / IGI papersStone grading on request
12–18 daysCustom production window