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Marquise|Natural|GIA

1.50ct H SI1 Marquise Natural Diamond

EX • H/SI1 • GIA 2566506606

Certificate GIA 2566506606

Diamond specifications and retailer prices

From $16,182 NZD
SGD 12,304 SGD
As of November 2, 2026
Save $12,823 NZD (44%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $29,006 NZD at With Clarity · As of November 2, 2026
View at With Clarity

About this 1.5ct natural marquise diamond

This 1.5ct natural marquise sits in the one-and-a-half to two 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 2566506606. Listed at 14 retailers as of November 2, 2026, with prices from $16,182 to $29,006, a $12,823 spread on the same certified stone. With Clarity lists it at $29,006. 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.79°
Pavilion angle40.2°
OriginNatural
Grading LabGIA
CertificateGIA 2566506606
Dimensions11.36 × 5.97 × 3.79 mm
L/W Ratio1.90
Culet sizeNone
Top View
11.36 mm5.97 mm1.50 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2566506606
Side View
Table 57.0%Crown 36.79°Girdle: MED-THKPavilion 40.2°Culet: NDepth 63.5%

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 2
Current: $20,677 NZD|Low: $16,182 NZD|High: $29,006 NZD|Avg: $20,230 NZD|+0.4%
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
With Clarity
November 2, 2026
Retailer 2$16,182 NZD
Retailer 12$16,987 NZD
Retailer 8$17,355 NZD
Retailer 3$17,430 NZD
Retailer 4$17,566 NZD
Retailer 11$17,890 NZD
Retailer 6$17,913 NZD
Retailer 5$20,643 NZD
Retailer 1$20,677 NZD
Retailer 10$20,842 NZD
Retailer 9$21,229 NZD
Retailer 7$23,857 NZD
Retailer 13$25,435 NZD
With Clarity$29,006 NZD

23 data points across 14 retailers

14 retailers$16,182 NZD to $29,006 NZD

B+
Cheapest Retailer
-
$16,182 NZD
SGD 12,304 SGD
B+
Retailer 2
-
$16,987 NZD
$9,558 USD
View
B+
Retailer 3
-
$17,355 NZD
$9,765 USD
View
B+
Retailer 4
-
$17,430 NZD
$9,807 USD
View
B+
Retailer 5
-
$17,566 NZD
$9,883 USD
View
Retailer 6
-
$17,890 NZD
$10,066 USD
View
Price last confirmed 10 days ago
B+
Retailer 7
-
$17,913 NZD
£7,936 GBP
View
B
Retailer 8
-
$20,643 NZD
$11,615 USD
View
B
Retailer 9
-
$20,677 NZD
€11,080 EUR
View
B
Retailer 10
-
$20,842 NZD
$11,727 USD
View
Retailer 11
-
$21,229 NZD
$11,945 USD
View
Price last confirmed 12 days ago
B
Retailer 12
-
$23,857 NZD
$13,423 USD
View
B
Retailer 13
-
$25,435 NZD
$14,311 USD
View
Most Expensive
B
With Clarity
2566506606 · Nov 2
$29,006 NZD
$16,320 USD
View
13 more retailers have this diamond
Prices start from $16,182 NZDSave up to $12,823 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
$16,182 NZD