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Marquise|Natural|GIA

1.21ct H SI2 Marquise Natural Diamond

VG • H/SI2 • GIA 1569645931

Certificate GIA 1569645931

Diamond specifications and retailer prices

From $4,692 AUD
As of November 4, 2026
Save $4,197 AUD (47%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $8,890 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 H 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 1569645931. Listed at 13 retailers as of November 4, 2026, with prices from $4,692 to $8,890, a $4,197 spread on the same certified stone. Helzberg Diamonds lists it at $8,890. 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
H
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle36.4°
Pavilion angle42.04°
OriginNatural
Grading LabGIA
CertificateGIA 1569645931
Dimensions10.26 × 5.54 × 3.57 mm
L/W Ratio1.85
Culet sizeNone
Top View
10.26 mm5.54 mm1.21 ctH / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 1569645931
Side View
Table 61.0%Crown 36.4°Girdle: STK-VTKPavilion 42.04°Culet: NDepth 64.5%

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 4
Current: $8,890 AUD|Low: $4,692 AUD|High: $8,890 AUD|Avg: $5,915 AUD|+5.3%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 7, 2026
Retailer 3$4,692 AUD
Retailer 11$4,771 AUD
Retailer 10$4,825 AUD
Retailer 4$4,938 AUD
Retailer 6$4,996 AUD
Retailer 5$5,116 AUD
Retailer 2$5,398 AUD
Retailer 13$5,632 AUD
Retailer 12$6,049 AUD
Retailer 9$6,217 AUD
Retailer 8$6,485 AUD
Retailer 7$8,348 AUD
Helzberg Diamonds$8,890 AUD

20 data points across 13 retailers

13 retailers$4,692 AUD to $8,890 AUD

B+
Cheapest Retailer
-
$4,692 AUD
B+
Retailer 2
-
$4,771 AUD
View
B+
Retailer 3
-
$4,825 AUD
View
B+
Retailer 4
-
$4,938 AUD
View
B+
Retailer 5
-
$4,996 AUD
View
B+
Retailer 6
-
$5,116 AUD
View
B+
Retailer 7
-
$5,398 AUD
View
B
Retailer 8
-
$5,632 AUD
View
B
Retailer 9
-
$6,049 AUD
View
B
Retailer 10
-
$6,217 AUD
View
B
Retailer 11
-
$6,485 AUD
View
B
Retailer 12
-
$8,348 AUD
View
Most Expensive
C
Helzberg Diamonds
XZRHLMPMKLPJH · Nov 6
$8,890 AUD
$6,108 USD
View
12 more retailers have this diamond
Prices start from $4,692 AUDSave up to $4,197 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
$4,692 AUD