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Marquise|Natural|GIA

1.22ct K SI2 Marquise Natural Diamond

EX • K/SI2 • GIA 6551312868

Certificate GIA 6551312868

Diamond specifications and retailer prices

From $4,021 AUD
As of November 6, 2026
Save $3,655 AUD (48%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $8,018 AUD at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1.22ct natural marquise diamond

This 1.22ct natural marquise sits in the classic one-carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551312868. Listed at 11 retailers as of November 4, 2026, with a 91% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.22
Carat
K
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle39.79°
Pavilion angle41.47°
OriginNatural
Grading LabGIA
CertificateGIA 6551312868
Dimensions10.42 × 5.50 × 3.55 mm
L/W Ratio1.89
Culet sizeNone
Top View
10.42 mm5.50 mm1.22 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6551312868
Side View
Table 61.0%Crown 39.79°Girdle: MED-THKPavilion 41.47°Culet: NoneDepth 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 6
Current: $8,018 AUD|Low: $2,192 AUD|High: $8,018 AUD|Avg: $4,876 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 6, 2026
Retailer 6$2,192 AUD
Retailer 4$3,481 AUD
Retailer 7$3,579 AUD
Retailer 14$4,021 AUD
Retailer 13$4,113 AUD
Retailer 3$4,426 AUD
Retailer 15$4,548 AUD
Retailer 2$4,570 AUD
Retailer 8$4,570 AUD
Retailer 9$4,807 AUD
Retailer 11$5,101 AUD
Retailer 5$5,142 AUD
Retailer 12$6,702 AUD
Retailer 10$7,676 AUD
NZ Jewellers$8,018 AUD

28 data points across 15 retailers

11 retailers$4,021 AUD to $7,676 AUD

B+
Cheapest Retailer
-
$4,021 AUD
B+
Retailer 2
-
$4,113 AUD
View
B+
Retailer 3
-
$4,426 AUD
View
Retailer 4
-
$4,548 AUD
View
Price last confirmed 13 days ago
B
Retailer 5
-
$4,570 AUD
View
B
Retailer 6
-
$4,570 AUD
View
B
Retailer 7
-
$4,807 AUD
View
B+
Retailer 8
-
$5,101 AUD
View
B
Retailer 9
-
$6,702 AUD
View
B
Retailer 10
-
$7,676 AUD
View
Most Expensive
NZ Jewellers
38a43f41-8f11-4da3-bbea-eacfc8532001 · Sep 30
$8,018 AUD
$5,509 USD
View
Price last confirmed 37 days ago
10 more retailers have this diamond
Prices start from $4,021 AUDSave up to $3,655 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+
1.22ct Marquise
$4,021 AUD