1.31 ct Natural Unheated Green Sapphire – Round Cut | AGCL Certified | Madagascar

This 1.31 ct natural green sapphire is cut round and completely unheated, documented on AGCL Report #M260345. Green sapphire is natural corundum colored by iron — the durability of Mohs 9 sapphire in the emerald color family, without emerald's fragility, heavy oiling, or inclusion-compromised clarity.

Rarity Analysis

Green sapphire is one of the least commonly offered sapphire body colors in the general market compared to blue, pink, or yellow.

• Color: Green is an uncommon body color for corundum; most green sapphire supply skews toward smaller, lower-saturation material, making a clean medium-saturation green like this one less frequently encountered.
• Size: At 1.31 ct, this stone is above the sub-carat range where most affordable green sapphire is concentrated — larger clean green sapphires become progressively harder to source.
• Treatment: The great majority of sapphire on the market is heat-treated; this stone carries a documented "no indication of heating" finding, which is the rarer and more valuable status for any sapphire color.
• Clarity: Graded Very Slightly Included — a clean, largely eye-clean grade that is not a given in natural, unheated green sapphire, where heavier inclusions are common.
• Documentation: AGCL Report #M260345 independently confirms the unheated treatment status and clarity grade stated here.
• Combined effect: An uncommon color, above-average size, documented unheated status, and clean clarity rarely converge in one green sapphire — this combination is what makes the stone difficult to replace once sold.

Buying Guidance

A few practical points to weigh before purchasing this specific stone:

• View it in both daylight and warm indoor light. Green sapphire can shift subtly in tone between light sources; see how the stone's specific green reads in the lighting you'll wear it in most.
• Plan your setting around the 6.36 x 6.33 x 4.34 mm dimensions. This is a round stone with typical sapphire depth — standard round prong or bezel settings sized to these measurements will work without custom fabrication.
• Verify the unheated claim against the AGCL report. When comparison shopping green sapphires, always check that "unheated" is backed by an independent lab report rather than a seller's unverified claim.
• Weigh this stone against the limited unheated green supply. As the Rarity Analysis notes, documented unheated green sapphire above 1 carat with clean clarity is genuinely scarce — comparable stones are not always readily available.
• Ask for a personal video if you would like to see the stone in motion before finalizing the purchase.

Learn More About This Gemstone

• Green Sapphire Buyer's Guide
• Unheated Sapphire Guide
• GIA Guide
• Custom Ring Guide
• Sapphire vs. Emerald Engagement Ring
• Madagascar Sapphire Guide
• Sapphire Buying Guide

Features

• SKU: CG8375
• Variety: Green Sapphire
• Carat Weight: 1.31 carats
• Dimensions: 6.36 x 6.33 x 4.34 mm
• Shape: Round
• Cut Style: Mixed Brilliant
• Treatment: Unheated — No Indication of Heating per AGCL Report #M260345
• Color: Green
• Clarity: Very Slightly Included
• Transparency: Transparent
• Origin: Madagascar (store's own assessment; not addressed by the AGCL report)
• Certification: AGCL Report #M260345
• Hardness: 9 on the Mohs scale

One of a Kind

This is a single natural gemstone, not a lab-created or mass-produced stone. No two natural sapphires are identical — the exact stone pictured is the exact stone you receive.

Care

• Clean with lukewarm water and mild soap using a soft brush
• Store separately to avoid surface contact
• Remove before heavy physical activity
• Avoid ultrasonic or steam cleaners

What's Included

• AGCL report
• Gemstone packed in a gem sleeve