Bridal Sets vs Loose Stones: The Optimal Inventory Mix

Should you stock finished engagement rings or loose stones?

The answer: Both, but in different ratios.

The Data

Based on 50+ US retailers we work with:

• 60% of customers buy loose stone + setting (custom)
• 30% buy pre-set bridal sets (convenience)
• 10% buy loose stone only (have their own jeweler)

The Optimal Inventory Split

Loose Stones: 70% of inventory value

Stock popular sizes:

• 0.50-0.75ct: 30% of inventory
• 1.00-1.50ct: 40% of inventory
• 2.00-3.00ct: 20% of inventory
• 3.00ct+: 10% of inventory

Bridal Sets: 30% of inventory value

Stock best-sellers:

• Solitaire (6-prong, 4-prong)
• Halo (round center, cushion center)
• Three-stone

The Margin Difference

Loose stones: 40-50% gross margin

Bridal sets: 60-70% gross margin (stone + setting markup)

But: Bridal sets have higher inventory risk (style goes out of fashion)