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Marquise|Natural|GIA

1.21ct I SI2 Marquise Natural Diamond

VG • I/SI2 • GIA 7566562402

Certificate GIA 7566562402

Diamond specifications and retailer prices

From $4,740 AUD
As of November 6, 2026
Save $4,066 AUD (46%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $8,807 AUD 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 7566562402. Listed at 8 retailers as of November 6, 2026, with prices from $4,740 to $8,807, a $4,066 spread on the same certified stone. Helzberg Diamonds lists it at $8,807. 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
I
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.92°
Pavilion angle40.83°
OriginNatural
Grading LabGIA
CertificateGIA 7566562402
Dimensions10.30 × 5.56 × 3.62 mm
L/W Ratio1.85
Culet sizeNone
Top View
10.30 mm5.56 mm1.21 ctI / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7566562402
Side View
Table 61.0%Crown 40.92°Girdle: THN-VTKPavilion 40.83°Culet: NDepth 65.1%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: $8,807 AUD|Low: $4,740 AUD|High: $8,807 AUD|Avg: $6,169 AUD
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 7, 2026
Retailer 8$4,740 AUD
Retailer 3$4,948 AUD
Retailer 2$5,347 AUD
Retailer 7$5,577 AUD
Retailer 6$5,996 AUD
Retailer 5$6,423 AUD
Retailer 4$8,243 AUD
Helzberg Diamonds$8,807 AUD

3 data points across 8 retailers

8 retailers$4,740 AUD to $8,807 AUD

B+
Cheapest Retailer
-
$4,740 AUD
B+
Retailer 2
-
$4,948 AUD
View
B+
Retailer 3
-
$5,347 AUD
View
B
Retailer 4
-
$5,577 AUD
View
B
Retailer 5
-
$5,996 AUD
View
B
Retailer 6
-
$6,423 AUD
View
B
Retailer 7
-
$8,243 AUD
View
Most Expensive
C
Helzberg Diamonds
XZRNLMMLMIKGI · Nov 6
$8,807 AUD
$6,051 USD
View
7 more retailers have this diamond
Prices start from $4,740 AUDSave up to $4,066 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
$4,740 AUD