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Marquise|Natural|GIA

1.21ct K SI2 Marquise Natural Diamond

GD • K/SI2 • GIA 6551370755

Certificate GIA 6551370755

Diamond specifications and retailer prices

From $2,937 AUD
As of November 6, 2026
Save $1,879 AUD (39%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $4,816 AUD 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 $2,937 to $4,816, a $1,879 spread on the same certified stone. Wholesale Diamonds Direct lists it at $4,816. 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
Colour
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: $2,937 AUD|Low: $2,333 AUD|High: $5,130 AUD|Avg: $3,572 AUD|-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$2,333 AUD
Retailer 1$2,937 AUD
Retailer 8$2,938 AUD
Retailer 7$3,144 AUD
Retailer 4$3,218 AUD
Retailer 6$3,225 AUD
Retailer 10$3,740 AUD
Retailer 5$3,745 AUD
Retailer 3$4,157 AUD
Retailer 9$4,566 AUD
Wholesale Diamonds Direct$4,816 AUD

19 data points across 11 retailers

8 retailers$2,937 AUD to $4,816 AUD

B+
Cheapest Retailer
-
$2,937 AUD
B+
Retailer 2
-
$3,144 AUD
View
B+
Retailer 3
-
$3,218 AUD
View
B+
Retailer 4
-
$3,225 AUD
View
B+
Retailer 5
-
$3,740 AUD
View
B+
Retailer 6
-
$3,745 AUD
View
B
Retailer 7
-
$4,157 AUD
View
Most Expensive
B
Wholesale Diamonds Direct
642297446 · Nov 6
$4,816 AUD
$3,309 USD
View
7 more retailers have this diamond
Prices start from $2,937 AUDSave up to $1,879 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.

B+
1.21ct Marquise
$2,937 AUD