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Marquise|Natural|GIA

1.50ct F SI1 Marquise Natural Diamond

EX • F/SI1 • GIA 6552621628

Certificate GIA 6552621628

Diamond specifications and retailer prices

From $14,750 AUD
As of November 1, 2026
Save $12,508 AUD (46%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $27,258 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.5ct natural marquise diamond

This 1.5ct natural marquise sits in the one-and-a-half to two carat band, graded F 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 6552621628. Listed at 24 retailers as of November 1, 2026, with prices from $14,750 to $27,258, a $12,508 spread on the same certified stone. NZ Jewellers lists it at $27,258. 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

1.50
Carat
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6552621628
Dimensions11.12 × 6.01 × 3.69 mm
L/W Ratio1.85
Key to symbols
Feather, Crystal, Needle, Natural
Top View
11.12 mm6.01 mm1.50 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6552621628
Side View
Table 59.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 61.3%

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: $22,196 AUD|Low: $14,750 AUD|High: $25,851 AUD|Avg: $18,499 AUD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 7, 2026
Retailer 12$14,750 AUD
Retailer 2$15,175 AUD
Retailer 3$16,133 AUD
Retailer 4$16,491 AUD
Retailer 8$17,513 AUD
Retailer 11$17,784 AUD
Retailer 5$18,318 AUD
Retailer 9$19,609 AUD
Retailer 6$20,742 AUD
Retailer 1$22,196 AUD
Retailer 10$23,861 AUD
Retailer 7$25,405 AUD

36 data points across 12 retailers

24 retailers$14,750 AUD to $27,258 AUD

B+
Cheapest Retailer
-
$14,750 AUD
B+
Retailer 2
-
$15,175 AUD
View
B+
Retailer 3
-
$15,245 AUD
View
B+
Retailer 4
-
$16,133 AUD
View
Retailer 5
-
$16,356 AUD
View
Price last confirmed 9 days ago
B+
Retailer 6
-
$16,491 AUD
View
B+
Retailer 7
-
$17,513 AUD
View
B+
Retailer 8
-
$17,718 AUD
View
Retailer 9
-
$17,784 AUD
View
Price last confirmed 15 days ago
B
Retailer 10
-
$17,990 AUD
View
B
Retailer 11
-
$18,110 AUD
View
B+
Retailer 12
-
$18,318 AUD
View
B
Retailer 13
-
$19,051 AUD
View
B
Retailer 14
-
$19,051 AUD
View
B
Retailer 15
-
$19,440 AUD
View
B
Retailer 16
-
$19,609 AUD
View
B
Retailer 17
-
$19,692 AUD
View
B
Retailer 18
-
$20,444 AUD
View
B
Retailer 19
-
$20,742 AUD
View
Retailer 20
-
$21,514 AUD
View
Price last confirmed 15 days ago
B
Retailer 21
-
$22,196 AUD
View
B
Retailer 22
-
$23,861 AUD
View
B
Retailer 23
-
$25,405 AUD
View
Most Expensive
B
NZ Jewellers
67900167-de5d-4b53-ac4f-ac2b59c55360 · Nov 5
$27,258 AUD
$18,729 USD
View
23 more retailers have this diamond
Prices start from $14,750 AUDSave up to $12,508 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+
1.50ct Marquise
$14,750 AUD