Marquise|Natural|GIA

1.21ct F SI2 Marquise Natural Diamond

EX • F/SI2 • GIA 2245000215

Certificate GIA 2245000215

Diamond specifications and retailer prices

From $3,796 USD
As of November 4, 2026
Save $3,006 USD (44%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $6,802 USD at Helzberg Diamonds · As of November 6, 2026
View at Helzberg Diamonds

About this 1.21ct natural marquise diamond

This 1.21ct natural marquise sits in the classic one-carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2245000215. Listed at 13 retailers as of November 4, 2026, with prices from $3,796 to $6,802, a $3,006 spread on the same certified stone. Helzberg Diamonds lists it at $6,802. 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 (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.01°
Pavilion angle37.63°
OriginNatural
Grading LabGIA
CertificateGIA 2245000215
Dimensions10.59 × 5.59 × 3.39 mm
L/W Ratio1.89
Culet sizeNone
Top View
10.59 mm5.59 mm1.21 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2245000215
Side View
Table 58.0%Crown 40.01°Girdle: MED-THKPavilion 37.63°Culet: NoneDepth 60.7%

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 4
Current: $6,802 USD|Low: $3,796 USD|High: $7,083 USD|Avg: $4,874 USD|-4.0%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 8$3,796 USD
Retailer 6$3,888 USD
Retailer 4$3,890 USD
Retailer 9$4,021 USD
Retailer 12$4,144 USD
Retailer 7$4,379 USD
Retailer 10$4,800 USD
Retailer 11$4,829 USD
Retailer 5$4,880 USD
Retailer 2$5,266 USD
Retailer 3$6,769 USD
Helzberg Diamonds$6,802 USD

35 data points across 12 retailers

13 retailers$3,796 USD to $6,802 USD

A
Cheapest Retailer
-
$3,796 USD
A
Retailer 2
-
$3,888 USD
View
A
Retailer 3
-
$3,890 USD
View
B+
Retailer 4
-
$4,021 USD
View
B+
Retailer 5
-
$4,144 USD
View
B+
Retailer 6
-
$4,379 USD
View
B+
Retailer 7
-
$4,800 USD
View
B+
Retailer 8
-
$4,829 USD
View
B+
Retailer 9
-
$4,880 USD
View
B+
Retailer 10
-
$5,064 USD
View
B+
Retailer 11
-
$5,266 USD
View
B
Retailer 12
-
$6,769 USD
View
Most Expensive
B
Helzberg Diamonds
XZRIIKLGGGIHL · Nov 6
$6,802 USD
View
12 more retailers have this diamond
Prices start from $3,796 USDSave up to $3,006 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 Marquise
$3,796 USD