Apparel & Accessories > Jewelry > Rings Jewelry > Rings in stock Mateo Secret Initial Ring in Yellow Gold/White Diamonds, Size 3: Ready to ship in 2-4 weeks. One way to win the best gift giver award? Make it personal—and as sparkly as possible. This ring has an emerald-cut crystal quartz nestled in an elegant yellow-gold frame setting. Coolest part is, there’s a teeny-tiny pavé diamond initial underneath the gemstone, which catches the light.14k yellow gold Crystal Quartz Personalization: one letter.