16.63 Ct. Quartz from Madagascar

This listing presents a single, beautiful transparent lemon quartz weighing 16.63 carats, cut into a precise trillion shape, with dimensions 16.68 by 16.58 by 11.26 millimeters. The stone displays a medium intense lemon green color that is both vivid and natural, and it comes to you without any enhancement. The clarity has been graded as very slightly included when evaluated at eye level, which means that the gem is exceptionally clean to the unaided eye, offering open transparency and strong light return. The cutter has delivered an excellent polish, and the triangular trillion cut has been executed to balance face up spread and brilliance, producing lively faceted reflections across the table and crown. Sourced from Madagascar, this piece reflects the high quality material of that locality, and it is presented by The Natural Gemstone Company with full disclosure of origin and treatment status.

From a gemological perspective, lemon quartz is a member of the quartz family, with a refractive index in the approximate range typical for quartz, and with low dispersion compared with higher index gems. This means that the stone’s appeal is based on color saturation, clarity, and cut quality rather than on fire or spectral dispersion. The medium intensity of the color in this 16.63 carat example is particularly desirable because it reads consistently across the table and through the crown, without appearing overly dark or pale. The very slightly included clarity grade confirms that inclusions do not interfere with windowing or significant light leakage, so the stone performs well under various lighting conditions. The excellent polish enhances luster and ease of cleaning, and because there has been no enhancement, the color you see is stable and natural, which is an important factor for collectors and buyers who value untreated material.

For the educated buyer considering value, size and natural color are key attributes here. At 16.63 carats this lemon quartz occupies a size class where high color saturation and eye clean clarity combine to increase rarity and desirability within the quartz market. The trillion cut is efficient at maximizing face up area while producing dynamic flashes across three facets, making the gem ideal for a statement ring, a prominent pendant, or a bespoke design where the stone is the focal point. Quartz has a Mohs hardness of seven, which provides reasonable durability for daily wear when properly set, though for a stone of this size I recommend protective settings or bezel designs for rings to reduce risk of knocks to the girdle. The Madagascar origin is meaningful because that region has produced some of the finest quartz material available, and knowing that the piece is natural and unenhanced supports both aesthetic and investment considerations. For buyers who request independent verification, The Natural Gemstone Company can assist with lab testing and photographic documentation for provenance and appraisal.

Color harmony with skin tone is a practical consideration that directly affects the perceived beauty of the jewelry once set. This lemon green hue has a warm yellow green character that flatters warm undertones by harmonizing with golden and peachy skin tones, producing a soft cohesive glow on the hand or décolletage. On neutral or olive skin tones the stone often appears especially luminous, because the green component complements olive undertones while the yellow aspect lifts the complexion, creating a fresh and vibrant appearance. For cool undertones, the gem can serve as a lively contrast, and pairing the quartz with white metal settings such as platinum or white gold will emphasize clarity and brightness, causing the color to pop against cooler complexions. For deeper skin tones the medium intense color provides striking contrast and reads as rich and jewel like, and setting choices in yellow gold will amplify warmth and create a luxurious harmony. Design suggestions include a delicate halo of small white accent stones to increase scintillation and perceived size, or a triple prong cathedral style mount for a contemporary look. If you prefer a warmer overall presentation, rose gold will add a subtle blush that layers with the lemon green to create an elegant and unique palette.

If you would like additional technical information, images under multiple light sources, or assistance in designing a setting that optimizes both security and visual impact, The Natural Gemstone Company is ready to help. We can advise on metal selection, mounting style, and protective design choices for a large trillion cut stone, and we support purchases with transparent provenance and care guidance. This 16.63 carat Madagascar lemon quartz is a rare opportunity for collectors and designers seeking a large, eye clean, and naturally colored gem, and we welcome your questions about this stone and about custom commissions that showcase its particular strengths.