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Marquise|Natural|GIA

1.21ct D SI1 Marquise Natural Diamond

GD • D/SI1 • GIA 5546223817

Certificate GIA 5546223817

Diamond specifications and retailer prices

From $8,943 AUD
As of November 4, 2026
Save $6,256 AUD (41%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $15,199 AUD at MOH London · As of November 2, 2026
View at MOH London

About this 1.21ct natural marquise diamond

This 1.21ct natural marquise sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 5546223817. Listed at 15 retailers as of November 2, 2026, with prices from $8,943 to $15,199, a $6,256 spread on the same certified stone. MOH London lists it at $15,199. 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
D
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.44°
Pavilion angle39.93°
OriginNatural
Grading LabGIA
CertificateGIA 5546223817
Dimensions9.98 × 5.47 × 3.59 mm
L/W Ratio1.82
Top View
9.98 mm5.47 mm1.21 ctD / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5546223817
Side View
Table 60.0%Crown 43.44°Girdle: THK-VTKPavilion 39.93°Culet: NoneDepth 65.5%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $15,199 AUD|Low: $9,756 AUD|High: $15,382 AUD|Avg: $11,712 AUD|-0.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 8$9,756 AUD
Retailer 2$10,007 AUD
Retailer 4$10,036 AUD
Retailer 7$10,259 AUD
Retailer 3$11,485 AUD
Retailer 5$12,896 AUD
Retailer 6$13,510 AUD
MOH London$15,199 AUD

34 data points across 8 retailers

15 retailers$8,943 AUD to $15,199 AUD

B
Cheapest Retailer
-
$8,943 AUD
B
Retailer 2
-
$9,152 AUD
View
B
Retailer 3
-
$9,219 AUD
View
B
Retailer 4
-
$9,756 AUD
View
Final sale: no returns
Retailer 5
-
$9,757 AUD
View
Price last confirmed 8 days ago
B
Retailer 6
-
$9,773 AUD
View
B
Retailer 7
-
$10,007 AUD
View
B
Retailer 8
-
$10,036 AUD
View
Retailer 9
-
$10,259 AUD
View
Price last confirmed 15 days ago
B
Retailer 10
-
$10,805 AUD
View
B
Retailer 11
-
$11,485 AUD
View
B
Retailer 12
-
$12,196 AUD
View
B
Retailer 13
-
$12,896 AUD
View
Retailer 14
-
$13,510 AUD
View
Price last confirmed 9 days ago
Most Expensive
B
MOH London
55942083B · Nov 2
$15,199 AUD
£8,223 GBP
View
14 more retailers have this diamond
Prices start from $8,943 AUDSave up to $6,256 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
$8,943 AUD