Marquise|Natural|GIA

1.21ct G SI1 Marquise Natural Diamond

EX • G/SI1

Diamond specifications and retailer prices

From $8,050 AUD
As of November 5, 2026
Save $1,720 AUD (18%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $15,631 AUD at NZ Jewellers · As of October 21, 2026
View at NZ Jewellers

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. Listed at 19 retailers as of November 5, 2026, with a relatively tight 21% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
Dimensions10.67 × 5.42 × 3.36 mm
L/W Ratio1.97
Top View
10.67 mm5.42 mm1.21 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA
Side View
Table 55.0%CrownGirdle: Very ThickPavilionCulet: NDepth 62.0%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 5
Current: $15,631 AUD|Low: $8,050 AUD|High: $15,631 AUD|Avg: $9,531 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 7, 2026
Retailer 7$8,050 AUD
Retailer 2$8,376 AUD
Retailer 5$8,468 AUD
Retailer 6$8,468 AUD
Retailer 9$8,489 AUD
Retailer 10$8,843 AUD
Retailer 3$9,067 AUD
Retailer 8$9,432 AUD
Retailer 4$9,770 AUD
NZ Jewellers$15,631 AUD

24 data points across 10 retailers

19 retailers$8,050 AUD to $9,770 AUD

B
Cheapest Retailer
-
$8,050 AUD
Retailer 2
-
$8,376 AUD
View
Retailer 3
-
$8,468 AUD
View
Price last confirmed 9 days ago
Retailer 4
-
$8,468 AUD
View
Price last confirmed 22 days ago
Retailer 5
-
$8,468 AUD
View
Price last confirmed 9 days ago
Retailer 6
-
$8,468 AUD
View
Price last confirmed 16 days ago
Retailer 7
-
$8,468 AUD
View
Price last confirmed 9 days ago
Retailer 8
-
$8,468 AUD
View
Price last confirmed 18 days ago
Retailer 9
-
$8,468 AUD
View
Price last confirmed 22 days ago
B
Retailer 10
-
$8,489 AUD
View
Retailer 11
-
$8,843 AUD
View
Price last confirmed 9 days ago
B
Retailer 12
-
$9,067 AUD
View
B
Retailer 13
-
$9,432 AUD
View
Retailer 14
-
$9,770 AUD
View
Price last confirmed 11 days ago
Retailer 15
-
$9,770 AUD
View
Price last confirmed 17 days ago
Retailer 16
-
$9,770 AUD
View
Price last confirmed 62 days ago
B
Retailer 17
-
$9,770 AUD
View
Retailer 18
-
$15,631 AUD
View
Price last confirmed 11 days ago
Most Expensive
NZ Jewellers
c2a38539-61b8-46f5-a17a-5b47b4f89cf5 · Oct 21
$15,631 AUD
$10,740 USD
View
Price last confirmed 17 days ago
18 more retailers have this diamond
Prices start from $8,050 AUDSave up to $1,720 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
$8,050 AUD