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Marquise|Natural|GIA

1.50ct D SI2 Marquise Natural Diamond

EX • D/SI2 • GIA 1558938398

Certificate GIA 1558938398

Diamond specifications and retailer prices

From $18,310 NZD
As of November 4, 2026
Save $595 NZD (3%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $26,263 NZD at NZ Jewellers · As of September 29, 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 D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1558938398. Listed at 16 retailers as of November 4, 2026, with a relatively tight 3% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
D
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1558938398
Dimensions11.32 × 5.96 × 3.72 mm
L/W Ratio1.90
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Needle, Pinpoint, Natural
Top View
11.32 mm5.96 mm1.50 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1558938398
Side View
Table 63.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 62.5%

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 4
Current: $18,310 NZD|Low: $12,099 NZD|High: $24,906 NZD|Avg: $16,965 NZD|-4.2%
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
Retailer 17
Retailer 18
November 2, 2026
Retailer 8$12,099 NZD
Retailer 7$13,006 NZD
Retailer 14$13,926 NZD
Retailer 9$14,206 NZD
Retailer 16$14,752 NZD
Retailer 3$15,757 NZD
Retailer 5$15,757 NZD
Retailer 4$15,889 NZD
Retailer 2$16,796 NZD
Retailer 13$17,382 NZD
Retailer 17$17,938 NZD
Retailer 1$18,310 NZD
Retailer 12$18,310 NZD
Retailer 11$18,905 NZD
Retailer 18$19,767 NZD
Retailer 6$20,741 NZD
Retailer 10$21,225 NZD
Retailer 15$24,742 NZD

22 data points across 18 retailers

16 retailers$18,310 NZD to $18,905 NZD

Retailer 1
-
$12,099 NZD
Price last confirmed 50 days ago
Retailer 2
-
$13,926 NZD
View
Price last confirmed 16 days ago
Retailer 3
-
$14,752 NZD
View
Price last confirmed 14 days ago
Retailer 4
-
$15,889 NZD
View
Price last confirmed 15 days ago
Retailer 5
-
$16,796 NZD
View
Price last confirmed 23 days ago
Retailer 6
-
$17,070 NZD
View
Price last confirmed 36 days ago
Retailer 7
-
$17,334 NZD
View
Price last confirmed 36 days ago
Retailer 8
-
$17,382 NZD
View
Price last confirmed 14 days ago
B+
Retailer 9
-
$18,310 NZD
View
B+
Retailer 10
-
$18,310 NZD
View
Retailer 11
-
$18,708 NZD
View
Price last confirmed 52 days ago
B+
Retailer 12
-
$18,905 NZD
View
Retailer 13
-
$19,697 NZD
View
Price last confirmed 38 days ago
Retailer 14
-
$20,741 NZD
View
Price last confirmed 23 days ago
Retailer 15
-
$24,742 NZD
View
Price last confirmed 16 days ago
Most Expensive
NZ Jewellers
d667a10a-dde7-4e8e-b8fc-388109071076 · Sep 29
$26,263 NZD
$14,559 USD
View
Price last confirmed 38 days ago
15 more retailers have this diamond
Prices start from $18,310 NZDSave up to $595 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
$18,310 NZD