Buy With Confidence
From the 4Cs of diamonds to metal choices, sizing, and care — everything our master jewelers wish every customer knew before buying fine jewelry.
Understanding the 4Cs
Cut Quality
Cut determines how brilliantly a diamond reflects light. A well-cut stone — regardless of shape — will sparkle far more than a poorly cut one, even at a larger carat weight.
Color Grade
Graded from D (colorless) to Z (light yellow/brown), color measures the absence of tint. Near-colorless grades (G-J) offer excellent value without a visible difference to the naked eye.
Clarity Grade
Clarity measures internal inclusions and external blemishes, graded from Flawless to Included. Most inclusions are microscopic and invisible without 10x magnification.
Carat Weight
Carat measures a diamond's weight, not size — one carat equals 200 milligrams. Price increases exponentially at whole and half-carat marks due to rarity.
Which Metal Is Right for You?
Platinum
95% pureThe most durable and hypoallergenic precious metal. Naturally white, it never needs replating and develops an elegant matte patina over time.
Best for everyday wear and sensitive skin.
18K White Gold
75% pure goldGold alloyed with white metals and finished with rhodium plating for a bright, silvery shine. Slightly more affordable than platinum.
Best for a platinum look at a lower price point.
18K Yellow Gold
75% pure goldThe classic, warm-toned choice that has adorned jewelry for centuries. Highly resistant to tarnish and complements warmer skin tones beautifully.
Best for a timeless, vintage-inspired look.
18K Rose Gold
75% pure goldGold alloyed with copper for a romantic pink hue. Its higher copper content also makes it the most scratch-resistant of the gold options.
Best for a modern, romantic aesthetic.
Popular Diamond Shapes
Round Brilliant
Maximum sparkle, most popular shape
Oval
Elongating, appears larger per carat
Cushion
Soft corners, vintage romantic feel
Emerald
Step-cut facets, hall-of-mirrors effect
Princess
Sharp corners, modern geometric look
Pear
Teardrop shape, elegant and unique
How to Find Your Ring Size
Measure an Existing Ring
Take a ring that already fits the intended finger well and measure its inner diameter in millimeters against our printable sizing chart.
Use a String or Strip of Paper
Wrap a strip of paper or string snugly around the base of the finger, mark where it overlaps, then measure the length against our chart.
Visit a Local Jeweler
Any local jewelry store can measure your ring size in minutes, free of charge — just bring the measurement or ring size number to us at checkout.
When in Doubt, Size Up
Fingers are typically smaller in the morning and cold weather. If you're between sizes, we recommend rounding up — we offer one free resizing within 60 days.
Caring for Your Jewelry
Fine jewelry is meant to last generations. A little routine care keeps every piece looking as brilliant as the day it was crafted.
Book a Free InspectionClean Regularly
Soak in warm water with a drop of mild dish soap, then gently brush with a soft toothbrush to remove oils and buildup.
Store Separately
Keep pieces in individual soft pouches or a lined jewelry box to prevent metal-on-metal scratching.
Remove Before Activities
Take off rings before swimming, exercising, cleaning, or applying lotions and perfumes, which can dull the finish.
Annual Professional Check
Have prongs and settings inspected once a year to catch loose stones before they become a problem — complimentary with every Tesora purchase.
Talk It Through With Our Gemologists
No pressure, no sales pitch — just honest guidance to help you choose the right diamond, metal, and setting.