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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 $18,283 NZD
As of November 1, 2026
Save $15,503 NZD (46%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $33,785 NZD 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 22 retailers as of November 1, 2026, with prices from $18,283 to $33,785, a $15,503 spread on the same certified stone. NZ Jewellers lists it at $33,785. 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: $21,706 NZD|Low: $18,283 NZD|High: $32,041 NZD|Avg: $22,920 NZD|-3.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 7, 2026
Retailer 8$18,283 NZD
Retailer 9$18,809 NZD
Retailer 10$19,996 NZD
Retailer 2$20,440 NZD
Retailer 1$21,706 NZD
Retailer 7$22,042 NZD
Retailer 3$22,558 NZD
Retailer 4$24,304 NZD
Retailer 5$29,575 NZD
Retailer 6$31,574 NZD

38 data points across 10 retailers

22 retailers$18,283 NZD to $33,785 NZD

B+
Cheapest Retailer
-
$18,283 NZD
B+
Retailer 2
-
$18,809 NZD
View
B+
Retailer 3
-
$18,896 NZD
View
B+
Retailer 4
-
$19,996 NZD
View
Retailer 5
-
$20,272 NZD
View
Price last confirmed 9 days ago
B
Retailer 6
-
$20,440 NZD
View
B+
Retailer 7
-
$21,706 NZD
View
B+
Retailer 8
-
$21,961 NZD
View
Retailer 9
-
$22,042 NZD
View
Price last confirmed 15 days ago
B+
Retailer 10
-
$22,298 NZD
View
B
Retailer 11
-
$22,446 NZD
View
B+
Retailer 12
-
$22,558 NZD
View
B
Retailer 13
-
$23,613 NZD
View
B
Retailer 14
-
$23,613 NZD
View
B
Retailer 15
-
$24,095 NZD
View
B
Retailer 16
-
$24,304 NZD
View
B
Retailer 17
-
$24,407 NZD
View
B
Retailer 18
-
$25,339 NZD
View
Retailer 19
-
$26,665 NZD
View
Price last confirmed 15 days ago
B
Retailer 20
-
$29,575 NZD
View
B
Retailer 21
-
$31,574 NZD
View
Most Expensive
B
NZ Jewellers
67900167-de5d-4b53-ac4f-ac2b59c55360 · Nov 5
$33,785 NZD
$18,729 USD
View
21 more retailers have this diamond
Prices start from $18,283 NZDSave up to $15,503 NZD

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
$18,283 NZD