Question 1

What is the most valuable sapphire color?

Accepted Answer

The most valuable sapphire color is a vivid, medium-to-medium-dark blue with strong saturation — often described as 'royal blue' or 'cornflower blue.' Fine cornflower Ceylon and Madagascar sapphires displaying this velvety hue consistently command the highest prices in the wholesale market. Among fancy sapphires, Padparadscha — the rare pink-orange variety — commands the highest premiums per carat. At Lim Gems Factory, we grade against internationally recognised colour reference standards (LMHC) to ensure every stone's colour is accurately represented.

Question 2

Do you supply unheated sapphires?

Accepted Answer

Yes — we offer both heated and unheated sapphires, with full treatment disclosure on every stone. Unheated sapphires that achieve fine colour naturally command significant premiums, often 2–5x the price of comparable heated stones. For unheated sapphires above 1 carat, we recommend independent certification from an LMHC-member laboratory to verify treatment status. We maintain regular stock of unheated blue sapphires from Ceylon, Madagascar, Thailand, and Australia, and can source unheated stones from other origins on request.

Question 3

What calibration sizes do you offer?

Accepted Answer

We cut calibrated sapphires in all colours, with sizes from 0.8 mm upward in round, oval, and cushion shapes. Standard stock covers popular calibrated ranges; for sizes outside stock — including large centre stones up to 10×8 mm and beyond — we cut to order with typical lead times of 2–4 weeks. All calibrated stones are verified to our ±0.1 mm tolerance standard. Single-piece calibration is also available for centre stones cut to specific setting dimensions.

Carat Range	0.1 ct – 20 ct+
Available Cuts	Round, Oval, Cushion, Emerald, Pear, Marquise, Radiant, Heart, Cabochon, and custom shapes
Calibration	±0.1 mm
Origins	Sri Lanka, Madagascar, Thailand, Australia
Treatment	Heated & unheated — full disclosure on every stone
Certification	Independent certification on request — GIA, GRS, GIT, AIGS, and other LMHC-member laboratories
Minimum Order	Varies by stone, size, and grade — share specs for a quote

Origin	Color	Price	Treatment	Best For
Sri Lanka (Ceylon)	Cornflower to royal blue, bright crystal, lively	$$$$	Heated & unheated	Investment, fine jewellery, engagement rings
Madagascar	Royal to vivid blue, strong saturation, excellent value	$$$	Heated & unheated	Fine jewellery, top colour at sharp price
Thailand	Deep blue with darker tone, well-saturated	$–$$	Heated	Commercial, volume production
Australia	Teal to deep blue, slightly inky	$$–$$$	Heated & unheated	Fashion jewellery, calibrated melee

Sapphires

Four Distinct Varieties

Blue Sapphire

Pink Sapphire

Yellow Sapphire

Padparadscha

What we supply

Compare Origins

Sri Lanka (Ceylon)

Madagascar

Thailand

Australia

Frequently asked

Continue exploring

Ceylon vs Thai Sapphires: Origin Comparison

Sapphire Heat Treatment Explained

Blue Sapphire Grading Guide

Padparadscha vs Pink Sapphire: Key Differences

Sapphire Buying Guide for B2B Buyers

Source sapphires from Bangkok