AUTHENTIC GEMSTONEby Lim Gems Factory

JOURNAL

Gemstone Knowledge
& Insights

Expert guides, industry news, and behind-the-scenes looks at precision gemstone cutting from our factory in Bangkok.

All Industry Guide

A gemstone dealer examining a ruby with tweezers at a Bangkok trading desk, loose sapphires and rubies on parcel paper with the city skyline beyond

Industry

Buying Gemstones in Bangkok: A B2B Buyer's Market Guide

JUNE 26, 2026·5 MIN READ

A gemstone report on cream paper beside a loose blue sapphire, a brass jeweller's loupe, and tweezers on a dark bench

Industry

How to Read a Gemstone Lab Report: Codes & Sections Explained

JUNE 26, 2026·6 MIN READ

Loose pink sapphires ranging from pastel to vivid hot pink, arranged for wholesale color grading

Industry

Pink Sapphire Grading & Sourcing: A B2B Guide

JUNE 26, 2026·4 MIN READ

An assortment of loose red rubies on a black velvet pad with brass tweezers lifting one stone for wholesale selection

Industry

The Complete Ruby Buying Guide for B2B Manufacturers

JUNE 26, 2026·4 MIN READ

Loose blue sapphires of varying size and saturation arranged for wholesale price comparison on a neutral background

Industry

Sapphire Price Per Carat: A Wholesale B2B Guide

JUNE 26, 2026·5 MIN READ

A fine unheated blue sapphire and red ruby on a cream gemstone report beside a brass loupe and a colour-reference swatch

Industry

Unheated Sapphires & Rubies: The B2B Premium Guide

JUNE 26, 2026·4 MIN READ

Calibrated small-size sapphires sorted by color and millimeter tolerance for pavé setting work

Guide

Calibrated Melee Sapphires: Sourcing 1-3mm Stones for Pavé

APRIL 23, 2026·11 MIN READ

Rough colored gemstones inspected before cutting at Lim Gems Factory Bangkok, sourced from traceable mining partners in Sri Lanka and Madagascar

Industry

Ethical Colored Gemstone Sourcing: Traceability & Red Flags

APRIL 23, 2026·12 MIN READ

Bangkok gemstone workshop where inspected and documented parcels are prepared for international courier shipment

Industry

Importing Gemstones from Thailand: Customs, Duties & Shipping

APRIL 23, 2026·16 MIN READ

Calibrated sapphire parcel arranged for wholesale order inspection at Lim Gems Factory, Bangkok

Guide

Wholesale Gemstone Minimum Orders (MOQ): A B2B Guide

APRIL 23, 2026·13 MIN READ

Blue sapphires of varying grades arranged for comparison under gemological lighting

Guide

Blue Sapphire Grading: Color, Clarity & Cut

APRIL 9, 2026·12 MIN READ

Burmese ruby and Mozambique ruby side by side comparison under gemological lighting

Guide

Burmese vs Mozambique Rubies: A Dealer's Comparison

APRIL 9, 2026·9 MIN READ

Side-by-side comparison of a Ceylon sapphire and Thai sapphire under gemological lighting

Guide

Ceylon vs Thai Sapphires: Origin Comparison

APRIL 9, 2026·13 MIN READ

Gemologist examining a ruby under magnification for synthetic indicators at a Bangkok gem lab

Guide

How to Spot Synthetic Rubies: A Professional Guide

APRIL 9, 2026·11 MIN READ

Padparadscha sapphire alongside pink sapphire showing the distinct color difference

Guide

Padparadscha vs Pink Sapphire: Key Differences

APRIL 9, 2026·11 MIN READ

Ruby being examined for color and clarity grading under gemological lighting

Guide

Ruby Grading: Color vs Clarity — What Matters More?

APRIL 9, 2026·11 MIN READ

Selection of rubies in various sizes and quality grades showing wholesale price per carat differences

Guide

Ruby Price Per Carat: A Comprehensive Guide

APRIL 9, 2026·10 MIN READ

Sapphires before and after heat treatment showing color improvement

Guide

Sapphire Heat Treatment: What Buyers Need to Know

APRIL 9, 2026·15 MIN READ

Side-by-side comparison of a machine-cut and hand-cut gemstone on a workbench

Industry

Machine Cut vs Hand Cut Gemstones: Which Is Better?

APRIL 8, 2026·10 MIN READ

Digital caliper measuring a calibrated gemstone against a specification sheet

Industry

Gemstone Calibration Explained: Tolerances & Standards

APRIL 7, 2026·10 MIN READ

Three gemstone lab reports laid out beside certified colored gemstones

Industry

GIA vs AIGS vs GIT Certification: Which Gemstone Lab to Trust?

APRIL 7, 2026·10 MIN READ

Gemstone parcels with price tags on a dealer's sorting pad

Guide

How Gemstone Pricing Works: A B2B Buyer's Guide

APRIL 6, 2026·11 MIN READ

Gemstone dealer examining colored stones at a Bangkok trading desk

Industry

How to Source Gemstones from Thailand: Suppliers, Costs & QC

APRIL 6, 2026·13 MIN READ

Assorted colored gemstones arranged next to jewelry design sketches

Guide

Choosing the Right Gemstone for Your Jewelry Line

APRIL 5, 2026·12 MIN READ

Loose emeralds, tourmalines, and spinels displayed on a dark velvet sorting pad

Guide

Emerald, Tourmaline & Spinel: Colored Gems Beyond Rubies

APRIL 5, 2026·12 MIN READ

Precision-cut blue sapphires arranged on a sorting tray

Guide

The Complete Sapphire Buying Guide for B2B Manufacturers

APRIL 1, 2026·8 MIN READ

Close-up of pigeon blood ruby displaying vivid red saturation under gemological lighting, Myanmar Mogok origin

Guide

Pigeon Blood Ruby — What It Really Means in the Trade

MARCH 25, 2026·7 MIN READ

Aerial view of Bangkok's gem district with cutting workshops

Industry

Why Bangkok Is the World's Gemstone Cutting Capital

MARCH 18, 2026·7 MIN READ