Diamond Rarity
wheel / straight color

Fancy Red

399 Fancy Red stones in a separate FTIR dataset; ~0.04% of >1 million fancy-color submissions in the broader analysis

GIA study figure
450
2025 publication; the analytical and broader submission populations have different scopes
exact lifetime count: not publicly disclosed
Est. graded 2006–2025
916–1.1k
scenario envelope, not a census
Median USD per carat
$1.31M
n=4 included · $530k–$2.69M · 0.73–1.92 ct · 2001–2024
Rarity-adjusted value
×1.5
parity price $1.97M/ct ÷ median $1.31M/ct · n=4
×1.5 · underpriced for rarity
auction sales by intensity4 sales
  1. Fancy Deep—
  2. Fancy Vivid—
  3. Fancy Intense—
  4. Fancy$530k/ct · 0.73 ct · 2001$923k/ct · 1.21 ct · 2024$1.69M/ct · 1.92 ct · 2013$2.69M/ct · 1.56 ct · 2024
  5. Fancy Light—
price by intensity
IntensityIncluded nMedian $/ctMean $/ctLow – highSince 2020QualifiedStudy stonesShare of cohort
Fancy Light————————
Fancy4$1.31M$1.46M$530k – $2.69M$1.81M · n=2—399—
Fancy Intense————————
Fancy Vivid————————
Fancy Deep————————
methodologyshow
read before interpreting

R43 identifies exactly 24 public-record unmodified Fancy Red diamonds over 1 ct; private stones are excluded. R46 separately documents a 399-stone FTIR dataset, including 156 known Argyle stones. Neither figure is a lifetime grading census; do not add overlapping populations.

argyle and GIA

GIA Argyle 1995–2014: 13 straight Red. Argyle Signature history: 35 red-grade stones (systems differ). Rio 2025: 1 GIA Fancy Red. Separate 2025 FTIR dataset: 156 known Argyle stones within 399 Fancy Reds. Cohorts can overlap.

two-color grades on this hue
auction sales4 included · 0 qualified
IDIntensityLot / stoneCaratsClaritySaleRealisedUSD / ctStatusSources
A08Fancy
Argyle Phoenix
Argyle provenance; trophy sale. I2 clarity confirmed in GIA 2025 Winston Red study, source G5.
1.56 ctI2
Phillips
Geneva · 13 May 2024
CHF 3,811,000
$4,203,152 · Auction-house USD equivalent
$2.69MIncludedlot · result
A09Fancy
Rectangular red ring
Sale release USD3,251,625 used; year-end release says USD3,252,675. Printed per-ct figure also inconsistent; recomputed.
1.92 ctVS2
Christie's
Geneva · 15 May 2013
CHF 3,147,750
$3,251,625 · Auction-house USD equivalent
$1.69MIncludedlot · result
A10Fancy
Red diamond brooch
Includes pink and colorless accent diamonds; historical result.
0.73 ctI1
Christie's
Hong Kong · 1 May 2001
HKD 3,015,000
$386,573 · FRED local per USD; sale date
$530kIncludedlot · fx
A88Fancy
'The Red Miracle,' Rare Fancy Red diamond ring
Whole-lot price divided by target colored carat weight; mounting, accents and signature are included.
1.21 ctSI2
Phillips
Geneva · 11 Nov 2024
CHF 977,900
$1,116,962 · FRED local units per USD; prior business day
$923kIncludedlot · fx
population scenarios 2006–2025
point input450 · window 2008–2016
scenario envelope 2006–2025916–1.1k
IN450
M11k
M2A1k
M2B1.1k
M3916

0.5% × 90,000 (R04), Jan 2008–Dec 2016. Inferred point only. The separate 2025 FTIR dataset contains 399 Fancy Reds (R46).

Diamond type does not prove Argyle origin. In R46, 156 of 399 have known Argyle origin and 3 are reportedly Brazilian; other origins are mostly unknown. R43 lists 24 public-record stones >1 ct.

supply evidence
this exact grade
IDCohortIntensity binStonesSharePeriod · scopeLimitsSource
S059RedFancy399—Through 2025 publication; intake window unstated
Exact hue; analytical dataset

Includes 156 known Argyle and 3 reportedly Brazilian stones. Not a lifetime grading census. Do not add overlapping cohorts.

Figure 10; R46
S060RedFancy13—1995–2014
Exact hue; tender subset

Separate dated cohort; may overlap other records. Not added to the 399 analytical stones.

p. 277; R37
S063RedFancy1—2025 final Beyond Rare tender
Exact hue per producer; tender inventory

May overlap other study records. Do not sum cohorts.

Rio Tinto release; AR04
related pooled cohorts · cannot be assigned to this grade
IDCohortIntensity binStonesSharePeriod · scopeLimitsSource
S055Argyle pink-to-red tender familyFancy—5%1995–2014
Broader group; selected tender cohort

Combines straight/modified pink and red. Fancy includes red. This selection is not mine output or an exact-hue distribution.

Figure 8, printed p. 276
S056Argyle pink-to-red tender familyFancy Intense—46%1995–2014
Broader group; selected tender cohort

Combines straight/modified pink and red. Fancy includes red. This selection is not mine output or an exact-hue distribution.

Figure 8, printed p. 276
S058Argyle pink-to-red tender familyFancy Vivid—17%1995–2014
Broader group; selected tender cohort

Combines straight/modified pink and red. Fancy includes red. This selection is not mine output or an exact-hue distribution.

Figure 8, printed p. 276
S057Argyle pink-to-red tender familyFancy Deep—32%1995–2014
Broader group; selected tender cohort

Combines straight/modified pink and red. Fancy includes red. This selection is not mine output or an exact-hue distribution.

Figure 8, printed p. 276
evidence
R22
G5
All predominantly red hues0.07% of >1,000,000Exact count not stated
>1 million natural fancy-color submissions, excluding D–Z · 2025 publication; exact sampling dates unstated

More than one million is a floor, not the exact denominator. No 700-stone count can be recovered.

R23
G5
Fancy Red — unmodified57% of Red category; size undisclosedExact count not stated
Red cohort R22; 56.9% of predominantly red diamonds · 2025 publication; dates unstated

56.9% of the red category; source also states ~0.04% of all fancy-color submissions. Exact count unavailable. The 399 FTIR spectra are a separate analytical sample.

R43
G5
Fancy Red — unmodified, over 1 ct, public record24Exact within public-record set
GIA Fancy red (unmodified) diamonds over one carat reported in public records (auctions, tenders, publications) · Through 2025 publication

Table 1 identifies 24 public-record unmodified Fancy Red diamonds over 1 ct. Additional privately owned stones are excluded. This is neither an upper bound on all stones nor a lifetime grading census. Corrected 26 September 2026.

R46
G5
Fancy Red — FTIR analytical dataset399Exact within analytical dataset
Fancy Red diamonds analyzed by FTIR at GIA · Through 2025 publication; collection window unstated

Direct analytical dataset size, not an independently stated total of all GIA grading reports. Includes 156 known Argyle and 3 reportedly Brazilian stones. Do not add to overlapping study or tender cohorts.

R47
G5
Fancy Red — known Argyle subset156Exact within analytical dataset
Known Argyle origins within the R46 FTIR dataset · Same dataset as R46

156 of the 399 analytical stones had known Argyle origin. This does not establish the mine origin of all other Fancy Red diamonds; remaining origins are mostly unknown.

R48
G5
Fancy Red — reportedly Brazilian subset3Exact within analytical dataset
Reported Minas Gerais origins within the R46 FTIR dataset · Same dataset as R46

Three stones were reportedly recovered in Minas Gerais, Brazil. Origin confidence is preserved as reported by the paper. This subset is already included in 399.

R37
G11
Argyle straight Red13Exact within cohort
GIA-graded tender study subset · 1995–2014

Direct count takes precedence over rounded 1% chart.

AR03
Argyle
Red · Signature Tender history35 diamonds
Argyle website red-grade tally · Signature Tender history through 2021 · Do not assume Argyle RED equals GIA Fancy Red

Grading correspondence requires individual reports; see AR13.

AR04
Argyle
Red · 2025 tender inventory1 diamond
GIA Fancy Red as stated by producer · 2025 final Beyond Rare tender · Straight red; lot 7 per results release

Not an increment to lifetime GIA totals; cohort overlap unknown.