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Marquise|Natural|GIA

1.21ct H SI1 Marquise Natural Diamond

EX • H/SI1 • GIA 6552770005

Certificate GIA 6552770005

Diamond specifications and retailer prices

From $6,804 AUD
As of November 1, 2026
Save $6,196 AUD (48%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $13,000 AUD at MOH London · As of November 4, 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 H 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 6552770005. Listed at 12 retailers as of November 1, 2026, with prices from $6,804 to $13,000, a $6,196 spread on the same certified stone. MOH London lists it at $13,000. 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6552770005
Dimensions10.75 × 5.65 × 3.41 mm
L/W Ratio1.90
Girdle conditionFaceted
Culet sizeNone
Top View
10.75 mm5.65 mm1.21 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6552770005
Side View
Table 55.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 60.4%

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 1
Current: $13,000 AUD|Low: $6,804 AUD|High: $13,192 AUD|Avg: $8,669 AUD|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 7, 2026
Retailer 6$6,804 AUD
Retailer 7$6,990 AUD
Retailer 3$7,049 AUD
Retailer 9$7,460 AUD
Retailer 8$7,503 AUD
Retailer 2$8,403 AUD
Retailer 11$8,484 AUD
Retailer 4$8,582 AUD
Retailer 10$8,791 AUD
Retailer 5$10,793 AUD
MOH London$13,000 AUD

46 data points across 11 retailers

12 retailers$6,804 AUD to $13,000 AUD

B+
Cheapest Retailer
-
$6,804 AUD
B+
Retailer 2
-
$6,990 AUD
View
B+
Retailer 3
-
$7,049 AUD
View
B
Retailer 4
-
$7,460 AUD
View
B
Retailer 5
-
$7,503 AUD
View
B
Retailer 6
-
$8,403 AUD
View
B
Retailer 7
-
$8,484 AUD
View
B
Retailer 8
-
$8,582 AUD
View
B
Retailer 9
-
$8,780 AUD
View
Retailer 10
-
$8,791 AUD
View
Price last confirmed 34 days ago
B
Retailer 11
-
$10,793 AUD
View
Most Expensive
B
MOH London
925C02E91 · Nov 4
$13,000 AUD
£7,033 GBP
View
11 more retailers have this diamond
Prices start from $6,804 AUDSave up to $6,196 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
$6,804 AUD