IGI Certified Lab Diamond Round Cut Ring, 14K/18K Gold

Product Description

IGI-certified lab grown diamond ring in solid 14K/18K gold. Round brilliant cut with excellent symmetry. Ships with official IGI report number. Ideal for bridal and anniversary collections.

IGI report versus a GRA card

An IGI report is a grading document with an independently measured cut grade, polish, symmetry and fluorescence statement, plus a report number you can look up on the IGI verification site. A GRA card records only carat, color and clarity as declared by the supplier.

For a ring sold at USD 150 and above, the report is the difference between a claim and proof. When a customer asks why two D VS1 stones look different, the IGI report answers with proportion and finish angles instead of a card that says D VS1 twice.

Cut grade on a round brilliant, in practice

Excellent cut means the stone returns light back through the crown instead of leaking it through the pavilion. On a 6.5 mm round that is the difference between a ring that sparkles across a room and one that only looks bright under a jewelry counter lamp.

We buy round lab grown in Excellent cut and Very Good polish at minimum, then reject stones with strong fluorescence below the H color line, because blue fluorescence flattens the stone in daylight photography.

14K versus 18K on the same design

Spec	14K	18K
Gold content	58.5 percent	75 percent
Ring weight at size 6	2.9 - 3.1 g	3.3 - 3.6 g
Price difference	baseline	plus 12 - 16 percent
Color retention	duller after 2 years	holds through resale

Both are solid gold, not plated. The choice is about price point versus long term color, and both are legitimate depending on whether you sell into bridal or into gift and travel retail.

Pricing ladder and order rules

Quarter carat steps from 0.5 to 3.0 ct, MOQ 10 pieces. Price breaks at 25 and 50 pieces. A 20 piece order across three sizes and two gold colors is accepted, but treat it as one production run for lead time purposes: the whole run ships together 22 to 28 days after deposit.

Stone upgrades after sampling are the most common delays we see. Lock the carat and color grade on the purchase order, and any change becomes a new sample cycle instead of a line edit.

Verification checklist for IGI certified bridal

• Look up the report number on the IGI site, not on a printed copy sent by the factory
• Compare the measured diameter on the report to your caliper reading, they should match within 0.1 mm
• Confirm the report states Excellent cut and Good polish or better
• Check that the laser inscription on the girdle matches the report number

White gold, rhodium and re-polish

White 14K and 18K both need rhodium plating to read bright. We plate 0.8 to 1.0 micron and expect 12 to 18 months before the yellow tone starts showing at the shank edge. Re-polish and re-plate runs USD 12 to 18 per ring at a local jeweler, so quote that as a service interval rather than as a defect.

If your market is price sensitive and long wear matters, yellow gold avoids the whole rhodium cycle.

Buyer Questions

Can I order a 3.0 ct center without an IGI report to save cost?

We would not recommend it above 2.0 ct. At that size customers ask for documentation, and a stone without a report number is harder to resell or insure. The report adds roughly USD 28 to 40 per stone.

Do you ship with appraisal paperwork for insurance?

We provide the IGI report and a factory invoice with full specs. Insurance appraisals are issued by a licensed appraiser in your market, and we can supply the spec sheet they need at no extra cost.

What is the return policy on certified stones?

Reported specs are covered: if an independent check shows color or clarity below the report grade, we replace the stone and cover freight both ways. Damage from wear or resizing is not covered after 30 days.

Related reading

To see how this price is built, read the five cost lines behind a wholesale ring quote.

For planning around Chinese New Year and peak season, read the order calendar that avoids air freight.