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Marquise|Natural|GIA

1.20ct H SI1 Marquise Natural Diamond

EX • H/SI1 • GIA 7553942310

Certificate GIA 7553942310

Diamond specifications and retailer prices

From $5,942 AUD
As of November 6, 2026
Save $6,641 AUD (53%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $13,636 AUD at NZ Jewellers · As of September 29, 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 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 7553942310. Listed at 22 retailers as of November 4, 2026, with a 112% 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 7553942310
Dimensions12.52 × 5.27 × 3.09 mm
L/W Ratio2.38
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Crystal, Feather, Needle, Indented Natural
Top View
12.52 mm5.27 mm1.20 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 7553942310
Side View
Table 57.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 58.7%

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: $7,652 AUD|Low: $5,942 AUD|High: $12,751 AUD|Avg: $8,645 AUD|-1.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 7, 2026
Retailer 10$5,942 AUD
Retailer 4$6,158 AUD
Retailer 3$6,800 AUD
Retailer 7$7,190 AUD
Retailer 1$7,652 AUD
Retailer 5$7,685 AUD
Retailer 2$7,922 AUD
Retailer 9$8,929 AUD
Retailer 6$9,665 AUD
Retailer 11$11,543 AUD
Retailer 8$12,583 AUD

25 data points across 11 retailers

22 retailers$5,942 AUD to $12,583 AUD

B+
Cheapest Retailer
-
$5,942 AUD
B+
Retailer 2
-
$6,158 AUD
View
B
Retailer 3
-
$6,800 AUD
View
B
Retailer 4
-
$7,190 AUD
View
B
Retailer 5
-
$7,310 AUD
View
Final sale: no returns
B
Retailer 6
-
$7,436 AUD
View
B
Retailer 7
-
$7,437 AUD
View
Retailer 8
-
$7,552 AUD
View
Price last confirmed 11 days ago
B
Retailer 9
-
$7,652 AUD
View
B
Retailer 10
-
$7,685 AUD
View
Retailer 11
-
$7,922 AUD
View
Price last confirmed 9 days ago
Retailer 12
-
$7,922 AUD
View
Price last confirmed 22 days ago
Retailer 13
-
$7,986 AUD
View
Price last confirmed 29 days ago
B
Retailer 14
-
$8,144 AUD
View
Retailer 15
-
$8,153 AUD
View
Price last confirmed 37 days ago
Retailer 16
-
$8,153 AUD
View
Price last confirmed 37 days ago
B
Retailer 17
-
$8,929 AUD
View
Retailer 18
-
$9,408 AUD
View
Price last confirmed 39 days ago
B
Retailer 19
-
$9,665 AUD
View
Retailer 20
-
$11,543 AUD
View
Price last confirmed 10 days ago
B
Retailer 21
-
$12,583 AUD
View
Most Expensive
NZ Jewellers
2cfd165e-4653-47d8-a433-57989b77a399 · Sep 29
$13,636 AUD
$9,369 USD
View
Price last confirmed 38 days ago
21 more retailers have this diamond
Prices start from $5,942 AUDSave up to $6,641 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
$5,942 AUD