Shipping Jewellery and Precious Stones: What Every Dealer Needs to Know About Transit Insurance

You're a jeweller in Singapore. You've just agreed to send a RM180,000 consignment of loose diamonds and three 18K gold necklaces to a partner in Kuala Lumpur. The courier quotes you a same-week rate. You pack the parcel, hand it over, and watch it drive away. At that moment, your entire consignment is protected by roughly S$100 of courier liability. The rest, every cent, is your exposure.

This guide explains how transit insurance works for jewellery and precious stones, why the risk profile differs from watches, and what marine cargo coverage under ICC(A) provides for dealers who ship high-value goods regularly.

This guide covers:

• Why jewellery and precious stones have a different transit risk profile than watches
• What ICC(A) covers (and excludes) for precious goods in movement
• Valuation challenges unique to diamonds, gemstones, and gold
• Packing and documentation standards underwriters expect
• How to structure an open cover for a mixed watch and jewellery business

Why Jewellery and Precious Stones Are Different

Watches and jewellery often travel in the same courier parcels, but their risk profiles are distinct. Understanding the differences matters because underwriters assess them differently, and some of the risks specific to precious stones don't apply to watches at all.

Risk Factor	Watches	Jewellery & Precious Stones
Identification after theft	Serial numbers on case and movement make tracking possible	Loose stones and gold are easily recut, melted, or reset. Tracing is extremely difficult
Damage visibility	Scratched crystal, dented case: damage is visible externally	Chipped diamonds, cracked gemstones, bent prongs: damage may require loupe inspection
Value density	High (S$10,000-500,000+ per piece)	Extreme. A small parcel of loose diamonds can be worth more than a safe full of watches
Packing fragility	Robust: steel and sapphire crystal are relatively durable	Variable. Emeralds chip easily. Pearl strands can break. Gold chains tangle and kink
Valuation complexity	Market prices are relatively transparent (secondary market data exists)	Diamonds require 4C grading. Coloured stones require expert valuation. Gold depends on weight and fineness

The practical implication: if you ship a mixed parcel containing watches and loose diamonds, the diamonds are harder to trace if stolen, harder to prove damage for, and harder to value after a loss. Your transit insurance needs to account for all of this.

What ICC(A) Covers for Precious Goods

Marine cargo insurance under Institute Cargo Clauses (A) provides the broadest standard transit cover available. It applies to all risks of loss or damage except specifically listed exclusions. This is the same framework used for watches, but it works equally well for jewellery, diamonds, and precious metals.

Transit Scenario	Covered Under ICC(A)?
Parcel of loose diamonds stolen from courier hub	Yes
Gold necklace damaged during rough handling in transit	Yes (assuming adequate packing)
Emerald ring chipped because shipped in a padded envelope	Likely denied (insufficient packing exclusion)
Shipment lost and never delivered	Yes
Gold tarnishes during extended storage at destination	No (inherent vice / not transit damage)
Courier company goes bankrupt while holding your parcel	No (insolvency exclusion)

The standard ICC(A) exclusions apply: wilful misconduct, ordinary wear and tear, insufficient packing, inherent vice, delay, carrier insolvency, and war and strikes (excluded by default, but can be bought back via separate Institute War Clauses and Institute Strikes Clauses at additional premium). For a full breakdown of what "all risks" actually excludes, see our guide on what happens when a watch gets lost in transit.

Valuation: The Hardest Part for Precious Stones

When you declare a shipment under a marine cargo open cover, you must state the value. For watches, this is relatively straightforward: purchase price, market value, or agreed value. For precious stones and jewellery, valuation is more complex.

Item Type	Valuation Basis	Documentation Needed
Loose diamonds	Based on 4C grading (carat, cut, colour, clarity) and current market	GIA or equivalent certificate for each stone, purchase invoice
Coloured gemstones	Expert valuation (less standardised than diamonds)	Independent gemologist's certificate, purchase invoice
Gold jewellery	Gold weight x spot price + craftsmanship premium	Weight documentation, fineness (18K/22K/24K), purchase or manufacturing invoice
Finished jewellery pieces	Retail or wholesale replacement value	Professional valuation or purchase invoice with itemised breakdown
Premium pearls	Expert valuation (based on size, lustre, surface, shape)	Pearl grading report, purchase invoice

Under-declaring value to save on premium is a false economy. If a loss occurs and the declared value is lower than the actual value, you'll be under-insured and the claim settlement will reflect the declared amount, not what the goods were worth. For more on valuation practices, see our jewellery valuation guide.

Packing Standards for Jewellery and Precious Stones

The ICC(A) packing exclusion applies to loss or damage caused by "insufficiency or unsuitability of packing or preparation." For jewellery, this is a higher bar than for watches because the goods are more varied and often more fragile.

Item	Minimum Packing Standard	Common Mistakes
Loose diamonds	Individual diamond papers (briefkes), inside a secure gem jar or parcel container, rigid outer box	Stones loose in a single bag where they can scratch each other
Gold chains and necklaces	Each piece in individual pouch, clasps secured, rigid box with foam	Multiple chains together that tangle and kink
Set jewellery (rings, earrings)	Individual boxes or slotted trays, cushioned outer packaging	Items loose in a shared compartment where prongs catch on each other
Pearl strands	Flat storage (not coiled), individual pouch, padded rigid box	Coiled tightly in a small bag where string can stretch or break

Photograph your packing process before every shipment. This is your evidence that packing was adequate if a claim arises. If underwriters challenge the packing, photos showing each item individually wrapped, cushioned, and boxed are your strongest defence.

Structuring an Open Cover for a Mixed Business

Many dealers handle both watches and jewellery. Some also trade in loose stones or precious metals. A marine cargo open cover can be structured to cover the full range, but the schedule needs to reflect the variety of goods being shipped.

Key elements your broker should address:

• Commodity description: The policy schedule should list all commodity types you ship: watches, finished jewellery, loose diamonds, coloured gemstones, precious metals, pearls
• Per-conveyance limit: Set high enough to cover your largest single shipment, whether that's a consignment of watches or a parcel of loose stones
• Valuation basis: Agreed in the schedule. Typically cost plus a percentage uplift (10-20%) covering shipping, insurance, and incidental expenses
• Geographic scope: Singapore, Malaysia, and any other countries you ship to or receive from
• Approved conveyance: Specify whether courier, air freight, secure logistics, and/or personal carry are covered

The obligation to declare every consignment without exception applies regardless of commodity. A mixed parcel of watches and diamonds still needs to be declared as a single consignment with the combined value. For more on how open covers work, see our guide on the transit gap for watch dealers.

How This Connects to Your Jeweller's Block Policy

If you already have a Jeweller's Block policy, it likely covers your jewellery and precious stones while they're on your premises, in your safe, or at a specified consignment location. The same gap that exists for watches exists for jewellery: many JB policies exclude or limit sendings.

Marine cargo insurance fills the transit gap for your entire product range, not just watches. JB covers what's static. Cargo covers what moves. Together, they protect everything you handle, from loose diamonds in your safe to a gold necklace in a courier van crossing the Causeway. For a broader look at how JB and standard business insurance compare, see our side-by-side comparison.

FAQ

Does marine cargo insurance cover loose diamonds the same way it covers watches?

Yes, ICC(A) covers all risks of loss or damage to the insured goods, regardless of whether they're watches, diamonds, gold, or gemstones. The exclusions are the same. The key difference is in valuation and documentation: diamonds require grading certificates for claims, whereas watches have serial numbers and more transparent market pricing.

Do I need separate policies for watches and jewellery?

No. A single marine cargo open cover can list multiple commodity types in the schedule. You declare each shipment by value and contents. The policy covers all declared commodities under one facility.

What if I ship jewellery and watches in the same parcel?

Declare the combined value of the entire parcel as one consignment. Itemise the contents for your own records and for claims documentation purposes. The per-conveyance limit in your schedule needs to accommodate the total value.

Are there any goods that ICC(A) won't cover at all?

ICC(A) doesn't exclude specific commodity types, but underwriters may decline to cover certain goods based on their risk appetite, or may impose special conditions. For extremely high-value shipments (e.g. significant diamond parcels), the underwriter may require specific security and conveyance conditions. Discuss your shipping profile with your broker.

How do I prove the value of loose diamonds if they're stolen in transit?

GIA or equivalent grading certificates, purchase invoices, and your declaration to the insurer at the time of shipment. The declared value at dispatch is the starting point for any claim. Without grading certificates, proving the quality and value of individual stones becomes significantly harder.

Is gold bullion or scrap gold covered under the same policy?

It depends on how the policy schedule is structured. Gold bullion and scrap gold may require specific commodity listing and may attract different rates than finished jewellery. Discuss with your broker whether your shipments include raw materials, scrap, or bullion alongside finished goods.

MINT Conclusion

Jewellery and precious stones face the same transit gap as watches, but with added complexity around valuation, traceability, and fragility. If you ship diamonds, gold, or gemstones alongside watches, your transit insurance needs to cover the full range, not just the timepieces.

A single marine cargo open cover under ICC(A) can protect everything you move, structured to match how your business actually operates. The key is accurate valuation, proper packing, and consistent declaration discipline.

MINT provides specialist insurance for Singapore's luxury watch ecosystem, from Jeweller's Block coverage that protects dealer inventory to collector policies designed for how watches are actually owned and moved.

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Disclaimer: This article provides general guidance on insurance coverage available in the Singapore and Malaysian markets as of March 2026. Policy terms, conditions, and availability vary by insurer. Always review your specific policy wording or consult a licensed broker before making coverage decisions.