CaratHunter
Plans
Marquise|Natural|GIA

1.20ct D SI1 Marquise Natural Diamond

EX • D/SI1 • GIA 6555015831

Certificate GIA 6555015831

Diamond specifications and retailer prices

From $7,309 AUD
As of November 6, 2026
Save $6,232 AUD (46%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $16,123 AUD at NZ Jewellers · As of September 30, 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 6555015831. Listed at 20 retailers as of November 2, 2026, with a 85% 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
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6555015831
Dimensions12.15 × 5.28 × 3.03 mm
L/W Ratio2.30
Top View
12.15 mm5.28 mm1.20 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6555015831
Side View
Table 64.0%CrownGirdle: THK-ETKPavilionCulet: NoneDepth 57.5%

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: $9,169 AUD|Low: $7,309 AUD|High: $14,372 AUD|Avg: $9,927 AUD|-2.8%
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
November 6, 2026
Retailer 4$7,309 AUD
Retailer 11$7,539 AUD
Retailer 2$7,946 AUD
Retailer 8$8,069 AUD
Retailer 9$8,565 AUD
Retailer 1$9,169 AUD
Retailer 12$9,169 AUD
Retailer 5$9,179 AUD
Retailer 7$9,475 AUD
Retailer 13$10,003 AUD
Retailer 6$10,239 AUD
Retailer 10$11,001 AUD
Retailer 3$12,586 AUD
Retailer 14$13,541 AUD

38 data points across 14 retailers

20 retailers$7,309 AUD to $13,541 AUD

B+
Cheapest Retailer
-
$7,309 AUD
B+
Retailer 2
-
$7,539 AUD
View
Final sale: no returns
B+
Retailer 3
-
$7,946 AUD
View
B+
Retailer 4
-
$8,069 AUD
View
B+
Retailer 5
-
$8,565 AUD
View
Retailer 6
-
$8,732 AUD
View
Price last confirmed 36 days ago
Retailer 7
-
$8,732 AUD
View
Price last confirmed 36 days ago
B
Retailer 8
-
$8,801 AUD
View
B+
Retailer 9
-
$9,169 AUD
View
B+
Retailer 10
-
$9,169 AUD
View
Retailer 11
-
$9,179 AUD
View
Price last confirmed 27 days ago
B+
Retailer 12
-
$9,475 AUD
View
B
Retailer 13
-
$10,003 AUD
View
Retailer 14
-
$10,077 AUD
View
Price last confirmed 52 days ago
Retailer 15
-
$10,077 AUD
View
Price last confirmed 38 days ago
Retailer 16
-
$10,239 AUD
View
Price last confirmed 14 days ago
B
Retailer 17
-
$11,001 AUD
View
Retailer 18
-
$12,586 AUD
View
Price last confirmed 9 days ago
B
Retailer 19
-
$13,541 AUD
View
Most Expensive
NZ Jewellers
ded45a2b-0ace-4b94-9ef8-4363f099808d · Sep 30
$16,123 AUD
$11,078 USD
View
Price last confirmed 37 days ago
19 more retailers have this diamond
Prices start from $7,309 AUDSave up to $6,232 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
$7,309 AUD