Loose 17 carat Gemstones

Seventeen-carat gemstones transcend typical collecting categories to become geological treasures of historic significance. Our collection features extraordinary 17.0 ct specimens – each gem representing nature's spectacular achievement, selected for perfect crystalline structure, exceptional quality parameters, and remarkable character that creates both incomparable presence and extraordinary legacy value.
Filters
Gem type

Gem type

Color

Color

Shape

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.

LEARN MORE ABOUT Shape
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.

LEARN MORE ABOUT Carat weight
1 items

17.73 Oval Shape Sri Lankan Blue Sapphire

Sold

FREQUENTLY ASKED QUESTIONS

What makes seventeen-carat gemstones historically significant in collections worldwide?

Seventeen-carat precious stones exist in such extraordinary rarity that individual specimens often receive proper names and dedicated monographs documenting their exceptional characteristics. Their remarkable size represents geological perfection so rare that many important varieties have produced fewer than 3 documented examples of this magnitude throughout human history. Natural, untreated gems of this caliber represent quintessential achievements worthy of permanent museum exhibition, combining unparalleled beauty with genuine rarity that ensures their perpetual importance among the world’s most significant mineral treasures.

How does the market for 17 Ct gems operate differently?

Precious stones of this exceptional magnitude operate in a realm transcending conventional markets, where individual gems achieve recognition as important cultural artifacts worthy of preservation. Their valuation follows unique parameters reflecting historical significance rather than commercial metrics. For original, GIA-certified colored stones of seventeen carats, acquisition typically involves private negotiations at the highest levels of international collecting, with many important specimens moving directly from discovery to permanent institutional collections without ever appearing in public marketplaces.

What documentation should accompany investment-grade seventeen-carat treasures?

Beyond standard certification, stones of this extraordinary caliber require comprehensive documentation packages establishing their complete provenance and unique characteristics. These typically include detailed origin analysis, comparative studies with other important specimens, and specialized security identification. For genuine precious stones of this significance, complete records of discovery circumstances, scientific examination, and any appearances in exhibitions or publications provide essential authentication that fundamentally determines both their historical importance and long-term value as irreplaceable natural wonders.