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Marquise|Natural|GIA

1.20ct D SI1 Marquise Natural Diamond

EX • D/SI1 • GIA 6561258837

Certificate GIA 6561258837

Diamond specifications and retailer prices

From $8,144 AUD
As of November 5, 2026
Save $7,079 AUD (47%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $15,435 AUD at NZ Jewellers · As of October 17, 2026
View at NZ Jewellers

About this 1.2ct natural marquise diamond

This 1.2ct natural marquise sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6561258837. Listed at 21 retailers as of November 4, 2026, with a 87% 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

1.20
Carat
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6561258837
Dimensions10.60 × 5.52 × 3.42 mm
L/W Ratio1.92
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cavity, Cloud, Needle, Indented Natural, Natural
Top View
10.60 mm5.52 mm1.20 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6561258837
Side View
Table 57.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 62.0%

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 5
Current: $10,052 AUD|Low: $6,855 AUD|High: $15,223 AUD|Avg: $9,402 AUD|+10.4%
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
Retailer 14
Retailer 15
Retailer 16
November 6, 2026
Retailer 7$6,855 AUD
Retailer 8$7,894 AUD
Retailer 4$8,077 AUD
Retailer 11$8,144 AUD
Retailer 16$8,805 AUD
Retailer 12$9,037 AUD
Retailer 6$9,096 AUD
Retailer 5$9,121 AUD
Retailer 9$9,243 AUD
Retailer 15$9,563 AUD
Retailer 13$9,591 AUD
Retailer 2$10,012 AUD
Retailer 1$10,052 AUD
Retailer 3$12,559 AUD
Retailer 10$12,643 AUD
Retailer 14$15,223 AUD

34 data points across 16 retailers

21 retailers$8,144 AUD to $15,223 AUD

Retailer 1
-
$6,855 AUD
Price last confirmed 11 days ago
Retailer 2
-
$7,618 AUD
View
Price last confirmed 15 days ago
Retailer 3
-
$7,894 AUD
View
Price last confirmed 14 days ago
Retailer 4
-
$8,077 AUD
View
Price last confirmed 16 days ago
B+
Retailer 5
-
$8,144 AUD
View
Retailer 6
-
$8,805 AUD
View
Price last confirmed 13 days ago
B
Retailer 7
-
$9,037 AUD
View
Retailer 8
-
$9,096 AUD
View
Price last confirmed 14 days ago
Retailer 9
-
$9,121 AUD
View
Price last confirmed 27 days ago
Retailer 10
-
$9,227 AUD
View
Price last confirmed 21 days ago
Retailer 11
-
$9,227 AUD
View
Price last confirmed 20 days ago
Retailer 12
-
$9,227 AUD
View
Price last confirmed 19 days ago
B
Retailer 13
-
$9,243 AUD
View
B
Retailer 14
-
$9,563 AUD
View
Final sale: no returns
B
Retailer 15
-
$9,591 AUD
View
B
Retailer 16
-
$10,052 AUD
View
Retailer 17
-
$10,648 AUD
View
Price last confirmed 18 days ago
Retailer 18
-
$12,559 AUD
View
Price last confirmed 14 days ago
B
Retailer 19
-
$12,643 AUD
View
B
Retailer 20
-
$15,223 AUD
View
Most Expensive
NZ Jewellers
b58c3e6e-0cfd-4753-84d8-470d4dc6847e · Oct 17
$15,435 AUD
$10,605 USD
View
Price last confirmed 19 days ago
20 more retailers have this diamond
Prices start from $8,144 AUDSave up to $7,079 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+
1.20ct Marquise
$8,144 AUD