Base Metal – 925 Sterling Silver. Type of Stone – AAAAA Cubic Zirconia / Turquoise / Lab Created Tourmaline / Lab Created Sapphire / Lab Created Aquamarine. Color – White / Blue. Cut – Round / Trillion / Pear / Teardrop. Certified – Authenticity by Adastra. THE HOUSE OF ADASTRA. Custom jewelry that reflects your individuality and style. Collaborated with customers for more than a decade to create custom pieces. Our highly skilled artisans meticulously create your personalized jewelry. Custom jewelry can be ordered in 18K Gold, 14K Gold and/ or natural certified diamonds, lab grown diamonds, moissanite, and natural gemstones. Get in touch to know more. Kindly check with your port before ordering. Feedback and Follow Us. Prompt Assistance: We strive to provide proper solutions and address your queries promptly. Follow us on social media to see our new collections. Y-drop necklace, party jewelry, handmade necklace, round brilliant cut diamond, long necklace, women jewelry.