Marquise|Natural|GIA

1.21ct K SI2 Marquise Natural Diamond

GD • K/SI2 • GIA 6551370755

Certificate GIA 6551370755

Diamond specifications and retailer prices

From $2,018 USD
As of November 6, 2026
Save $1,291 USD (39%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $3,309 USD at Wholesale Diamonds Direct · As of November 6, 2026
View at Wholesale Diamonds Direct

About this 1.21ct natural marquise diamond

This 1.21ct natural marquise sits in the classic one-carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6551370755. Listed at 8 retailers as of November 6, 2026, with prices from $2,018 to $3,309, a $1,291 spread on the same certified stone. Wholesale Diamonds Direct lists it at $3,309. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.21
Carat
K
Color
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.53°
Pavilion angle39.85°
OriginNatural
Grading LabGIA
CertificateGIA 6551370755
Dimensions11.36 × 5.05 × 3.42 mm
L/W Ratio2.25
Culet sizeNone
Top View
11.36 mm5.05 mm1.21 ctK / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551370755
Side View
Table 57.0%Crown 41.53°Girdle: STK-VTKPavilion 39.85°Culet: NoneDepth 67.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $2,018 USD|Low: $1,603 USD|High: $3,525 USD|Avg: $2,457 USD|-6.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Wholesale Diamonds Direct
November 6, 2026
Retailer 2$1,603 USD
Retailer 1$2,018 USD
Retailer 8$2,019 USD
Retailer 7$2,160 USD
Retailer 4$2,211 USD
Retailer 6$2,216 USD
Retailer 10$2,570 USD
Retailer 5$2,573 USD
Retailer 3$2,856 USD
Retailer 9$3,137 USD
Wholesale Diamonds Direct$3,309 USD

20 data points across 11 retailers

8 retailers$2,018 USD to $3,309 USD

B+
Cheapest Retailer
-
$2,018 USD
B+
Retailer 2
-
$2,160 USD
View
B+
Retailer 3
-
$2,211 USD
View
B+
Retailer 4
-
$2,216 USD
View
B+
Retailer 5
-
$2,570 USD
View
B+
Retailer 6
-
$2,573 USD
View
B
Retailer 7
-
$2,856 USD
View
Most Expensive
B
Wholesale Diamonds Direct
642297446 · Nov 6
$3,309 USD
View
7 more retailers have this diamond
Prices start from $2,018 USDSave up to $1,291 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.

B+
1.21ct Marquise
$2,018 USD