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Marquise|Natural|GIA

1.21ct G SI1 Marquise Natural Diamond

EX • G/SI1 • GIA 1553350131

Certificate GIA 1553350131

Diamond specifications and retailer prices

From $8,222 AUD
As of November 6, 2026
Save $2,214 AUD (21%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $10,435 AUD at Zales · As of November 5, 2026
View at Zales

About this 1.21ct natural marquise diamond

This 1.21ct natural marquise sits in the classic one-carat band, graded G 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 1553350131. Listed at 10 retailers as of November 5, 2026, with prices from $8,222 to $10,435, a $2,214 spread on the same certified stone. Zales lists it at $10,435. 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
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle41.96°
OriginNatural
Grading LabGIA
CertificateGIA 1553350131
Dimensions10.76 × 5.58 × 3.55 mm
L/W Ratio1.93
Culet sizeNone
Top View
10.76 mm5.58 mm1.21 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1553350131
Side View
Table 59.0%Crown 34.6°Girdle: MED-THKPavilion 41.96°Culet: NoneDepth 63.5%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $9,200 AUD|Low: $5,159 AUD|High: $10,977 AUD|Avg: $7,220 AUD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Zales
November 5, 2026
Retailer 5$5,159 AUD
Retailer 12$5,782 AUD
Retailer 13$5,944 AUD
Retailer 9$6,081 AUD
Retailer 6$6,140 AUD
Retailer 8$6,305 AUD
Retailer 10$6,832 AUD
Retailer 2$7,245 AUD
Retailer 3$7,277 AUD
Retailer 7$7,370 AUD
Retailer 1$9,200 AUD
Retailer 11$9,488 AUD
Retailer 4$10,247 AUD
Zales$10,435 AUD

31 data points across 14 retailers

10 retailers$8,222 AUD to $10,435 AUD

Retailer 1
-
$5,944 AUD
Price last confirmed 17 days ago
Retailer 2
-
$6,081 AUD
View
Price last confirmed 15 days ago
Retailer 3
-
$6,140 AUD
View
Price last confirmed 15 days ago
Retailer 4
-
$6,305 AUD
View
Price last confirmed 15 days ago
Retailer 5
-
$6,832 AUD
View
Price last confirmed 16 days ago
Retailer 6
-
$7,245 AUD
View
Price last confirmed 16 days ago
B
Retailer 7
-
$8,222 AUD
View
B
Retailer 8
-
$9,200 AUD
View
Retailer 9
-
$10,247 AUD
View
Price last confirmed 17 days ago
Most Expensive
B
Zales
529733725 · Nov 5
$10,435 AUD
$7,170 USD
View
9 more retailers have this diamond
Prices start from $8,222 AUDSave up to $2,214 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
$8,222 AUD