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Marquise|Natural|GIA

1.21ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 6551452417

Certificate GIA 6551452417

Diamond specifications and retailer prices

From $4,880 AUD
As of November 6, 2026
5 retailers carry this diamond
Most expensive: $6,227 AUD at Wholesale Diamonds Direct · As of October 12, 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551452417. Listed at 5 retailers as of November 6, 2026. 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
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle38.41°
Pavilion angle40.27°
OriginNatural
Grading LabGIA
CertificateGIA 6551452417
Dimensions10.69 × 5.65 × 3.49 mm
L/W Ratio1.89
Culet sizeNone
Top View
10.69 mm5.65 mm1.21 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6551452417
Side View
Table 60.0%Crown 38.41°Girdle: MED-THKPavilion 40.27°Culet: NoneDepth 61.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 6
Current: $3,048 AUD|Low: $3,045 AUD|High: $6,505 AUD|Avg: $4,676 AUD|-3.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Wholesale Diamonds Direct
October 13, 2026
Retailer 2$3,045 AUD
Retailer 1$3,048 AUD
Retailer 5$3,762 AUD
Retailer 3$3,797 AUD
Retailer 7$4,168 AUD
Retailer 6$4,646 AUD
Retailer 10$4,880 AUD
Retailer 4$4,915 AUD
Retailer 9$5,942 AUD
Retailer 8$5,983 AUD
Wholesale Diamonds Direct$6,227 AUD

14 data points across 11 retailers

5 retailers

Retailer 1
-
$3,762 AUD
Price last confirmed 23 days ago
Retailer 2
-
$3,797 AUD
View
Price last confirmed 24 days ago
Retailer 3
-
$4,168 AUD
View
Price last confirmed 23 days ago
B+
Retailer 4
-
$4,880 AUD
View
Most Expensive
Wholesale Diamonds Direct
262935531 · Oct 12
$6,227 AUD
$4,278 USD
View
Price last confirmed 25 days ago
4 more retailers have this diamond
Prices start from $4,880 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
$4,880 AUD