Round|Natural|GIA

1.21ct F SI2 Round Natural Diamond

EX • F/SI2 • GIA 2126497381

Certificate GIA 2126497381

Diamond specifications and retailer prices

From $2,990 USD
As of November 3, 2026
Save $7,760 USD (72%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $10,750 USD 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 13 retailers as of November 3, 2026, with prices from $2,990 to $10,750, a $7,760 spread on the same certified stone. Jared lists it at $10,750. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 3
Current: $10,750 USD|Low: $2,990 USD|High: $10,750 USD|Avg: $8,134 USD
Jared
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 5, 2026
Retailer 6$2,990 USD
Retailer 7$4,380 USD
Retailer 9$7,748 USD
Retailer 5$7,805 USD
Retailer 12$8,006 USD
Retailer 8$8,506 USD
Retailer 11$8,538 USD
Retailer 3$10,400 USD
Retailer 4$10,400 USD
Retailer 10$10,502 USD
Retailer 2$10,510 USD
Jared$10,750 USD

33 data points across 12 retailers

13 retailers$2,990 USD to $10,750 USD

A
Cheapest Retailer
-
$2,990 USD
B+
Retailer 2
-
$4,380 USD
View
B
Retailer 3
-
$7,748 USD
View
B
Retailer 4
-
$7,805 USD
View
B
Retailer 5
-
$8,006 USD
View
B
Retailer 6
-
$8,506 USD
View
B
Retailer 7
-
$8,538 USD
View
B
Retailer 8
-
$10,400 USD
View
B
Retailer 9
-
$10,400 USD
View
B
Retailer 10
-
$10,502 USD
View
B
Retailer 11
-
$10,510 USD
View
Most Expensive
B
Jared
128855742 · Nov 6
$10,750 USD
View
11 more retailers have this diamond
Prices start from $2,990 USDSave up to $7,760 USD

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
$2,990 USD