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Marquise|Natural|GIA

1.21ct M SI1 Marquise Natural Diamond

EX • M/SI1 • GIA 1242003834

Certificate GIA 1242003834

Diamond specifications and retailer prices

From $2,401 AUD
As of November 4, 2026
Save $1,424 AUD (37%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $3,826 AUD at Wholesale Diamonds Direct · As of November 3, 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 M colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1242003834. Listed at 6 retailers as of November 3, 2026, with prices from $2,401 to $3,826, a $1,424 spread on the same certified stone. Wholesale Diamonds Direct lists it at $3,826. 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
M
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle39.41°
Pavilion angle38.47°
OriginNatural
Grading LabGIA
CertificateGIA 1242003834
Dimensions11.38 × 5.44 × 3.29 mm
L/W Ratio2.09
Culet sizeNone
Top View
11.38 mm5.44 mm1.21 ctM / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 1242003834
Side View
Table 59.0%Crown 39.41°Girdle: STK-THKPavilion 38.47°Culet: NoneDepth 60.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $3,308 AUD|Low: $1,928 AUD|High: $4,343 AUD|Avg: $3,201 AUD|-15.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Wholesale Diamonds Direct
November 3, 2026
Retailer 5$1,928 AUD
Retailer 4$2,401 AUD
Retailer 2$2,954 AUD
Retailer 3$3,097 AUD
Retailer 1$3,308 AUD
Wholesale Diamonds Direct$3,826 AUD
Retailer 6$3,860 AUD

35 data points across 7 retailers

6 retailers$2,401 AUD to $3,826 AUD

A
Cheapest Retailer
-
$2,401 AUD
B+
Retailer 2
-
$2,954 AUD
View
B+
Retailer 3
-
$3,097 AUD
View
B
Retailer 4
-
$3,156 AUD
View
B
Retailer 5
-
$3,308 AUD
View
Most Expensive
B
Wholesale Diamonds Direct
539238965 · Nov 3
$3,826 AUD
$2,678 USD
View
5 more retailers have this diamond
Prices start from $2,401 AUDSave up to $1,424 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.

A
1.21ct Marquise
$2,401 AUD