Fragrance comparison

Alchemy vs Cosmology

Notes, accords, longevity, sillage, seasons and community ratings, side by side.

Updated 14 Nov 2026 27 ratings analysed

Alchemy

Swiss Arabian

4.006 votes

Rank #48,144 WoodyWhite Floral

Full profile Similar & dupes

45%scent match

Some overlap

Cosmology

Testament London

4.0521 votes

Rank #26,453 SweetVanilla

Full profile Similar & dupes

Quick verdict

Which one should you pick?

No clear winner: the 4 categories split 2–2.

Alchemy
Choose it for a woody and white floral character. Wins on longevity and value for money. Best in fall, evening wear.
Cosmology
Choose it for a sweet and vanilla character. Wins on sillage & projection and fragranxe ranking. Best in winter, evening wear.

Alchemy2/4

Cosmology2/4

Ratings & consensus: Not scored
Community sentiment: Not scored
Longevity: Alchemy
Sillage & projection: Cosmology
Value for money: Alchemy
Versatility: Not scored
Note pyramid (duration): Not scored
Fragranxe ranking: Cosmology

Head-to-head breakdown

Every category side by side, with the winner called out.

Fragrance

AlchemySwiss Arabian

CosmologyTestament London

Winner

Ratings & consensus

Average rating and ownership split

4.00/ 5 · 6 votes

Have 24%Had 3%Want 72%

4.05/ 5 · 21 votes

Have 19%Had 10%Want 71%

Category winnerNot enough dataRating weighted by vote count

Community sentiment

How voters split from love to hate

33%Love

50%Like

0%Ok

17%Dislike

0%Hate

6 votes · too few to score

57%Love

19%Like

5%Ok

10%Dislike

10%Hate

21 votes · too few to score

Category winnerNot enough dataMost positive mix (25+ votes)

Longevity & sillage

0–100 community performance scores

⏱ Longevity80

〰 Sillage42

♥ Love / hate75

⏱ Longevity75

〰 Sillage73

♥ Love / hate76

Category winners

LongevityAlchemy

SillageCosmology

Value for money

How fairly priced voters find it

¤ Price value75

¤ Price value54

Category winnerAlchemyBest value score

Main accords

Strength of each scent family · outlined = shared by both

woody100%

white floral92%

floral84%

powdery77%

vanilla69%

sweet61%

sweet100%

vanilla92%

white floral84%

fruity77%

animalic69%

musky61%

Scent match45%Some overlap · both white floral, vanilla and sweet

Note pyramid (duration)

Top, heart and base, with how long each lasts when known · gold = shared

Top

JacarandaAnisePlum

Heart

RoseTuberoseYlang-YlangJasmineLily-of-the-Valley

Base

CedarSandalwoodVetiverHeliotropeNatural Vanilla

Top

PlumAniseRoseRaspberryChamomile

Heart

TuberoseLily-of-the-ValleyHeliotropeJasmineClovesYlang-Ylang

Base

Tonka BeanAnimal notesCoconutMuskVanillaMoss

InformationalShared notesAnise, Plum, Rose and Tuberose. Note durations are not published for these fragrances, so this is not scored.

Seasons & time of day

Relative to each fragrance's best season

Spring33

Summer0

Fall100

Winter100

Day33

Night100

Spring40

Summer40

Fall73

Winter100

Day50

Night100

Category winnerNot enough dataMost year-round

Who wears it

Gender appeal votes

Men0

Unisex0

Women100

Men21

Unisex58

Women21

InformationalProfile onlyAudience is not scored

Ranking & credits

Fragranxe overall rank, nose and launch

Overall rank#48,144

PerfumerNot listed

Launched—

Reviews1

Overall rank#26,453

PerfumerMiguel Matos

Launched—

Reviews4

Category winnerCosmologyHigher overall rank

In a nutshell

Description & review snapshot

Alchemy by Swiss Arabian introduces a distinct oriental floral character for women. The blend opens with sharp jacaranda and anise, moving into a rich heart of tuberose and rose. It settles into a warm, vanilla-forward base. Ideal for cooler spring evenings or office environments, this scent provides a reliable, sweet…

Reviews →

Cosmology by Testament London offers a dense blend of dark plum and heavy white florals. Designed by perfumer Miguel Matos, this scent wraps ripe, sweet fruits around a thick, animalic base. It is a bold option for cool evening wear when you want a rich, fruity floral that projects off the skin with serious weight.

Reviews →

InformationalRead bothTaste is personal

How we score: ratings blend public fragrance ratings with Fragranxe member votes; longevity, sillage, value and sentiment are community vote scores, and season bars are relative to each fragrance's strongest season. Categories with too little data are shown but not scored. The scent match weighs accord overlap (60%) and shared notes (40%). More in the FAQ.

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Common questions

Straight answers from the data above.

Which is better, Alchemy or Cosmology?

No clear winner: the 4 categories split 2–2. Alchemy is rated 4.00/5 from 6 votes; Cosmology is rated 4.05/5 from 21 votes. Choose Alchemy for a woody and white floral character. Wins on longevity and value for money. Best in fall, evening wear. Choose Cosmology for a sweet and vanilla character. Wins on sillage & projection and fragranxe ranking. Best in winter, evening wear.

Which lasts longer, Alchemy or Cosmology?

Alchemy lasts longest (Alchemy 80/100, Cosmology 75/100), based on community performance votes.

Which projects more, Alchemy or Cosmology?

Cosmology projects furthest (Cosmology 73/100, Alchemy 42/100), based on community performance votes.

Do Alchemy and Cosmology smell similar?

Some overlap: a 45% scent match on Fragranxe. Both share white floral, vanilla and sweet accords. Common notes include Anise, Plum, Rose and Tuberose.

Is Alchemy or Cosmology better for summer or winter?

Alchemy suits evening wear; Cosmology suits evening wear. Based on community season votes.

What are the notes in Alchemy and Cosmology?

Alchemy has top notes of Jacaranda, Anise and Plum, heart notes of Rose, Tuberose, Ylang-Ylang and Jasmine, a base of Cedar, Sandalwood, Vetiver and Heliotrope. Cosmology has top notes of Plum, Anise, Rose and Raspberry, heart notes of Tuberose, Lily-of-the-Valley, Heliotrope and Jasmine, a base of Tonka Bean, Animal notes, Coconut and Musk.