Certification Explained

How to read GIA, IGI and NGTC certificates line by line and spot fake papers.

72 articles total

Diamond Fluorescence: Is It a Discount or a Defect
Certification Explained

Diamond Fluorescence: Is It a Discount or a Defect

Two 1ct G VS2 excellent-cut diamonds. One is $680 cheaper because the report notes 'medium blue fluorescence.' Is that a...
Sarah Lin Oct 5, 2026 5 min read
How to Read a GIA Grading Report Line by Line
Certification Explained

How to Read a GIA Grading Report Line by Line

A line-by-line tour of the GIA Diamond Grading Report for wholesale buyers, including what each grade range means at the...
James Wang Oct 3, 2026 4 min read
Why Two Diamond Reports Can Disagree
Certification Explained

Why Two Diamond Reports Can Disagree

Ever wonder why the same diamond could get different grades? Here is how grading tolerance and human judgment explain re...
David Chen Oct 1, 2026 7 min read
Fancy Color Diamond Grading: Faint to Vivid
Certification Explained

Fancy Color Diamond Grading: Faint to Vivid

Fancy colored diamonds follow a different grading system than white diamonds. Here is how hue, tone and saturation creat...
David Chen Oct 1, 2026 7 min read
EGL Diamond Certification: What Buyers Should Know
Certification Explained

EGL Diamond Certification: What Buyers Should Know

EGL certificates appear on many affordable diamonds. Here is what the lab is, how its grading compares, and how buyers s...
David Chen Oct 1, 2026 7 min read
Reading the Inclusion Plot on a Diamond Report
Certification Explained

Reading the Inclusion Plot on a Diamond Report

The inclusion plot maps where a diamond's inclusions sit. This guide explains the symbols, how to judge visibility, and ...
Sarah Lin Sep 30, 2026 11 min read
Diamond Polish and Symmetry Grades: The Hidden Cut Detail
Certification Explained

Diamond Polish and Symmetry Grades: The Hidden Cut Detail

Polish and symmetry are the craftsmanship grades behind a diamond's cut. This guide explains what they measure, how they...
Sarah Lin Sep 30, 2026 11 min read
Diamond Fluorescence: Should You Worry About the Blue Glow?
Certification Explained

Diamond Fluorescence: Should You Worry About the Blue Glow?

Diamond fluorescence is widely misunderstood. This guide explains what the blue glow under UV light is, when it helps, w...
Sarah Lin Sep 30, 2026 11 min read
Diamond Color Grade Explained - HOLYCOME
Certification Explained

Diamond Color Grade Explained - HOLYCOME

Diamond color is graded on the D-to-Z scale. This guide explains what each letter means, how the setting affects perceiv...
Sarah Lin Sep 30, 2026 16 min read
Diamond Certificate Number Verification - HOLYCOME
Certification Explained

Diamond Certificate Number Verification - HOLYCOME

A diamond certificate number is the link between the paper and the stone. This guide shows how to verify GIA, IGI and HR...
Sarah Lin Sep 30, 2026 16 min read

Wholesale Order Terms

As a factory-direct jewelry manufacturer, we quote every order against stone type, metal, setting and finish. Loose stones are priced per carat, finished rings, earrings and bracelets per piece, and custom metal work per gram. Send your stone, metal, size and quantity for a wholesale price list in USD, quoted with FOB, EXW or DDP shipping terms.

MOQ & Pricing

Minimum order quantity (MOQ) starts from 5 pcs per style. Mixed-SKU orders are accepted, and volume discounts apply from 50 pcs; pricing is tiered by quantity and quoted per piece, per carat or per gram.

Lead Time

Ready-stock pieces ship in 2-5 business days. Custom sampling takes 5-10 days; bulk production lead time runs 10-25 days, depending on design, stone size and order quantity, confirmed in your written quote.

Payment Terms

We accept T/T telegraphic bank transfer, PayPal, Alibaba Trade Assurance and Western Union. OEM and private-label orders require a 30% deposit, with the 70% balance paid before shipment.

Shipping

DHL, FedEx and UPS for samples and small orders; air or sea freight for bulk. Worldwide delivery under FOB, EXW or DDP terms, with QC photos shared before dispatch.

Frequently Asked Questions (FAQ)

What is your MOQ for wholesale jewelry orders?

MOQ starts from 5 pcs per style. Mixed-SKU orders are welcome, and catalog styles can be combined into one batch. Larger OEM/ODM and private-label programs negotiate a tiered MOQ and volume discount.

How do you price wholesale moissanite and diamond jewelry?

Loose stones are quoted per carat, finished rings, earrings and bracelets per piece, and custom metal work per gram. Send the stone, metal, size and quantity, and our sales team returns a wholesale price list with USD FOB, EXW or DDP quotes and a written price range.

What is the typical lead time for samples and bulk orders?

Ready-stock pieces prepare in 2-5 business days. Samples take 5-10 days; bulk production lead time runs 10-25 days depending on design, stone size and quantity. The exact timeline is confirmed in your quote before sampling.

Which payment methods and terms do you accept?

We accept T/T telegraphic bank transfer, PayPal, Alibaba Trade Assurance and Western Union. Custom and OEM orders require a 30% deposit, and the 70% balance is paid before shipment; final terms are agreed in the order agreement.

Can you produce custom OEM/ODM and private-label jewelry?

Yes. Send your CAD file, photo, sketch or target price. We handle stone selection, casting, setting, plating, laser engraving, hang tags, jewelry boxes and certificate cards under your own brand name.