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Round|Natural|GIA

1.21ct F SI2 Round Natural Diamond

EX • F/SI2 • GIA 2126497381

Certificate GIA 2126497381

Diamond specifications and retailer prices

From $4,352 AUD
As of November 3, 2026
Save $11,294 AUD (72%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $15,646 AUD at Jared · As of November 6, 2026
View at Jared

About this 1.21ct natural round diamond

This 1.21ct natural round sits in the classic one-carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2126497381. Listed at 14 retailers as of November 3, 2026, with prices from $4,352 to $15,646, a $11,294 spread on the same certified stone. Jared lists it at $15,646. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.21
Carat
F
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2126497381
Dimensions6.86 × 6.82 × 4.22 mm
L/W Ratio1.01
Culet sizeNone
Top View
6.86 mm6.82 mm1.21 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2126497381
Side View
Table 59.0%CrownGirdle: THN-MEDPavilionCulet: NoneDepth 61.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 3
Current: $15,646 AUD|Low: $4,352 AUD|High: $15,646 AUD|Avg: $11,855 AUD
Jared
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 8$4,352 AUD
Retailer 9$6,375 AUD
Retailer 11$11,276 AUD
Retailer 7$11,359 AUD
Retailer 3$11,652 AUD
Retailer 10$12,380 AUD
Retailer 13$12,426 AUD
Retailer 2$13,246 AUD
Retailer 4$15,136 AUD
Retailer 5$15,136 AUD
Retailer 12$15,285 AUD
Retailer 6$15,296 AUD
Jared$15,646 AUD

33 data points across 13 retailers

14 retailers$4,352 AUD to $15,646 AUD

A
Cheapest Retailer
-
$4,352 AUD
B+
Retailer 2
-
$6,375 AUD
View
B
Retailer 3
-
$11,276 AUD
View
B
Retailer 4
-
$11,359 AUD
View
B
Retailer 5
-
$11,652 AUD
View
B
Retailer 6
-
$12,380 AUD
View
B
Retailer 7
-
$12,426 AUD
View
Retailer 8
-
$13,246 AUD
View
B
Retailer 9
-
$15,136 AUD
View
B
Retailer 10
-
$15,136 AUD
View
B
Retailer 11
-
$15,285 AUD
View
B
Retailer 12
-
$15,296 AUD
View
Most Expensive
B
Jared
128855742 · Nov 6
$15,646 AUD
$10,750 USD
View
12 more retailers have this diamond
Prices start from $4,352 AUDSave up to $11,294 AUD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.21ct Round
$4,352 AUD