Untreated Ruby Gemstones

Untreated rubies represent the pinnacle of gemstone collecting, featuring natural beauty exactly as formed in the earth. Our collection showcases these exceptionally rare unheated rubies, each displaying inherent color and clarity characteristics that command significant premium due to their increasing scarcity and unmodified natural state.
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Gem type

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Color

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Shape

Diamond shape refers to the overall outline and facets of a diamond. It’s a crucial factor that affects a diamond’s brilliance, fire, and scintillation – its ability to reflect light and sparkle.

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Origin

Origin

Treatment

Treatment

Carat weight

Carat weight

Diamond weight, also known as carat weight, is a measure of a diamond’s mass. It’s one of the four Cs (carat, cut, clarity, and color) that determine a diamond’s value and price.

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6 items

3.39 Cushion Shape Mozambique Ruby GRS

49,000.00$

3.82 Sugar Loaf Tanzanian Ruby GRS

7,880.00$

1.37 Oval Shape Tanzanian Ruby GRS

3,300.00$

1.04 Cushion Shape Vivid Red Mozambique Ruby

Sold

1.34 Oval Shape Vivid Red Tanzanian Ruby

Sold

5.28 Cushion Shape Mozambique Ruby GRS

Sold

FREQUENTLY ASKED QUESTIONS

Why are untreated ruby gemstones especially valuable in today's market?

Untreated ruby gemstones command exceptional value due to their increasing rarity—less than 2% of fine rubies on the market remain in their pure, natural state. These precious stones represent the pinnacle of gemstone collecting, displaying color and clarity exactly as formed in the earth without human intervention. The price premium for these conflict-free, flawless specimens reflects both their scarcity and the growing collector demand for authentic, unmodified gems with documented natural provenance.

How rare are truly untreated rubies compared to heated stones?

Truly untreated rubies constitute less than 2% of commercial-quality rubies available for purchase, making them exceedingly rare precious stones. Their scarcity continues to increase as most newly-mined rubies undergo enhancement, driving up the value of verified natural specimens. High-quality untreated rubies with excellent color and clarity are among the most valuable colored gemstones in the world, commanding prices 30-60% higher than their heat-treated counterparts due to their exceptional rarity and authentic character.

What documentation should accompany loose untreated ruby gemstones?

Loose untreated ruby gemstones should always be accompanied by comprehensive GIA certification specifically stating “no evidence of heat treatment” or “no indications of thermal enhancement.” This authoritative documentation verifies the stone’s natural, unmodified state and substantially increases its worth and marketability. Additional origin certificates from respected laboratories provide further authentication of the gem’s conflict-free source, essential for proving the genuine, unaltered character of these rare precious stones when purchasing for investment or collection.

How does the natural color of untreated rubies differ from heated specimens?

Untreated rubies often display subtle color variations and secondary hues that create character and uniqueness not found in the more uniform appearance of heated stones. Their natural red may contain gentle purple or pink undertones that gemologists prize for their authentic aesthetic. While heated rubies typically show more consistent saturation, many collectors value the distinctive, original color profile of untreated precious stones for their pure, unmodified beauty that represents the genuine character of these rare natural treasures.