Direct emissions
25,578
tCO2e
G
Gem Diamonds Limited
Explore carbon emissions data for Gem Diamonds Limited. Mycelium helps you review reported emissions, disclosure status, Scope 1, Scope 2 and Scope 3 data, climate targets and sustainability information in one company profile.
This profile brings together available carbon emissions data for Gem Diamonds Limited, including reported figures, modelled estimates, disclosure documents and sustainability indicators, so you can review its emissions and compare its performance against similar companies. Read how we source and check this data.
Emissions
Carbon emissions
Total yearly emissions across all scopes
329,767 tCO2e
Scope 1
tCO2e
25,578
Scope 2
tCO2e
64,027
Scope 3 total
tCO2e
240,162
Scope 3 reported
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 11
- 12
- 13
- 14
- 15
Provenance
Emissions
Factors
401,317
kgCO2e / £M
Supplier specific emission factors (kgCO2e / £M)
Modelled
Reported
Scope 1 + 2
Direct + purchased energy
109,047
109,047
Upstream
+ upstream Scope 3
231,926
109,047
Total
+ all Scope 3
401,317
118,269
Which figure should I use?
Use Modelled. It is the most complete view: any categories the company hasn't disclosed are filled with industry-typical estimates, so a transparent company isn't unfairly penalised against one that simply hasn't reported.
Reported counts only emissions the company has filed itself. A blank or low Reported cell doesn't mean those emissions don't exist, just that the company hasn't disclosed them.
When Reported sits close to Modelled, that is a positive signal. The company has disclosed most of its salient emissions and there's little gap for the model to fill. Even then, Modelled is the right figure to use for a like-for-like comparison across companies.
Sustainability
Snapshot
Based on reported data, retrieved with AI
- Gem Diamonds Limited reported 329,767 tCO₂e in 2025.
- Scope 3 accounted for 73% of emissions.
According to available emissions disclosures, Gem Diamonds Limited reported total yearly emissions of 329,767 tCO₂e in 2025. Scope 3 emissions accounted for 73% of reported output, indicating supply chain activity, purchased goods and services, business travel, and wider operational dependencies were the most significant contributors to the company's carbon footprint.
The company achieved a Mycelium Score of 0.5, placing it well below average for its sector for sustainability performance, and received a transparency score of 10.0, pointing to very little public detail on their key emissions.
Total Emissions across all scopes
329,767 tCO2e
Scope 1 emissions
Direct emissions from sources the company owns or controls, such as fuel use, facilities and vehicles.
Scope 2 emissions
Indirect emissions from purchased energy, including electricity, heating and cooling.
Location based
64,027
tCO2eMarket based
–
tCO2eScope 3 emissions
Wider value chain emissions across the 15 GHG Protocol categories, from purchased goods and business travel to investments, where reported.
Cat 1
Purchased goods & services
80,157
tCO2eCat 2
Capital goods
2,974
tCO2eCat 3
Fuel & energy related activities
2,974
tCO2eCat 4
Upstream transportation & distribution
2,974
tCO2eCat 5
Waste generated in operations
2,974
tCO2eCat 6
Business travel
2,974
tCO2eCat 7
Employee commuting
2,974
tCO2eCat 8
Upstream leased assets
2,974
tCO2eCat 9
Downstream transportation & distribution
2,974
tCO2eCat 10
Processing of sold products
2,974
tCO2eCat 11
Use of sold products
113,771
tCO2eCat 12
End-of-life treatment of sold products
2,974
tCO2eCat 13
Downstream leased assets
2,974
tCO2eCat 14
Franchises
2,974
tCO2eCat 15
Investments
2,974
tCO2e15 values were derived via Mycelium's normalisation process rather than reported by the company. Cells marked “–” were not disclosed.
Contact Info
Website
www.gemdiamonds.comAddress
2nd Floor, Coastal Building
Wickhams Cay Ii
P.O. Box 2221
VG1130
Country
United Kingdom
Phone
+44 20 3043 0280Browse carbon emissions data by industry
Jump straight into the sectors users explore most, or view all industries.
How scoring works
How the Mycelium Score is calculated
The Mycelium Score is out of 10. Up to 6.5 points reflect carbon intensity vs sector peers (emissions normalised against revenue). The remaining 3.5 reflect data quality: third-party verified, profile claimed by the company, and full disclosure across all reporting categories.
A higher score means lower carbon intensity than sector peers, backed by data that's third-party verified, claimed by the company, and fully disclosed. Gem Diamonds Limited's score sits at the top of this page and in the score panel.
How the Transparency Score is calculated
The Transparency Score measures how much of a company's key emissions data is publicly disclosed, graded from A (very high) down to F (very low). Crucially, it weights each gap by how material that bucket is for the company's industry, so an undisclosed category where the bulk of emissions sit hurts far more than a minor one.
For Gem Diamonds Limited, the single biggest gap is Use of sold products (Scope 3 Category 11). Mycelium estimates it accounts for around 35% of the company's total footprint, typically the largest source of emissions for a Retail company, yet it hasn't been disclosed. Leaving a bucket this large unreported is what's holding the transparency score down.
Other material categories Gem Diamonds Limited hasn't disclosed:
- Purchased goods & services (Scope 3 Category 1), around 25% of the estimated footprint
In total, roughly 60% of Gem Diamonds Limited's estimated emissions sit in categories it hasn't reported. Disclosing these would be the fastest way to raise the transparency score.
Read the full scoring methodology
Our white paper covers exactly how the Mycelium Score and Transparency Score are calculated, including the normalisation process and what earns a 10/10.
Download the white paper (PDF)
Gem Diamonds Limited carbon emissions FAQs
What are Gem Diamonds Limited's carbon emissions?
In its 2025 reporting year, Gem Diamonds Limited disclosed total emissions of 329,767 tCO2e across all scopes. Scope 3 accounted for the largest share, around 73% of the total.
Does Gem Diamonds Limited report Scope 1, Scope 2 and Scope 3 emissions?
For 2025, Gem Diamonds Limited's available disclosure covers Scope 1 (25,578 tCO2e), Scope 2 (64,027 tCO2e). Figures not reported by the company are shown as modelled estimates and labelled as such.
How transparent is Gem Diamonds Limited's emissions reporting?
Gem Diamonds Limited has a Mycelium transparency score of 10 out of 100. The score weights each emissions category by how material it is for the company's industry, so it reflects whether the disclosures that matter most have been made.
Is Gem Diamonds Limited sustainable?
Mycelium measures sustainability through carbon emissions data rather than giving a yes or no verdict. Gem Diamonds Limited has a Mycelium Score of 0.5 out of 10, which reflects its emissions intensity against sector peers together with how transparent and well-verified its reporting is. The emissions figures, disclosure documents and climate targets on this page give the fuller picture.
Is Gem Diamonds Limited environmentally friendly?
Carbon emissions are one measurable part of environmental impact, and the part Mycelium tracks. Gem Diamonds Limited disclosed 329,767 tCO2e for 2025, and its Mycelium Score of 0.5 out of 10 shows how that performance compares with similar companies in its sector.
Learn more about our methodology and where this data comes from.
