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Marquise|Natural|GIA

1.50ct G SI1 Marquise Natural Diamond

EX • G/SI1 • GIA 1559720724

Certificate GIA 1559720724

Diamond specifications and retailer prices

From $15,498 NZD
$8,720 USD
As of November 1, 2026
Save $12,946 NZD (46%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $28,444 NZD at NZ Jewellers · As of October 30, 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 G 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 1559720724. Listed at 15 retailers as of October 30, 2026, with prices from $15,498 to $28,444, a $12,946 spread on the same certified stone. NZ Jewellers lists it at $28,444. 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
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1559720724
Dimensions11.28 × 5.93 × 3.72 mm
L/W Ratio1.90
Culet sizeNone
Top View
11.28 mm5.93 mm1.50 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1559720724
Side View
Table 62.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 62.8%

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: $18,684 NZD|Low: $15,662 NZD|High: $26,797 NZD|Avg: $19,993 NZD|+0.6%
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
November 3, 2026
Retailer 12$15,836 NZD
Retailer 13$15,981 NZD
Retailer 11$16,902 NZD
Retailer 14$18,462 NZD
Retailer 2$18,495 NZD
Retailer 1$18,684 NZD
Retailer 7$18,774 NZD
Retailer 4$19,550 NZD
Retailer 6$19,550 NZD
Retailer 5$20,208 NZD
Retailer 8$20,498 NZD
Retailer 3$22,314 NZD
Retailer 10$25,072 NZD
Retailer 9$26,653 NZD

15 data points across 14 retailers

15 retailers$15,498 NZD to $28,444 NZD

B+
Cheapest Retailer
-
$15,498 NZD
$8,720 USD
B+
Retailer 2
-
$15,836 NZD
$8,910 USD
View
B+
Retailer 3
-
$15,981 NZD
$8,992 USD
View
B+
Retailer 4
-
$16,902 NZD
$9,510 USD
View
B+
Retailer 5
-
$18,495 NZD
$10,406 USD
View
B+
Retailer 6
-
$18,684 NZD
£8,278 GBP
View
B+
Retailer 7
-
$18,774 NZD
$10,563 USD
View
B
Retailer 8
-
$19,550 NZD
$11,000 USD
View
B
Retailer 9
-
$19,550 NZD
$11,000 USD
View
B+
Retailer 10
-
$20,208 NZD
$11,370 USD
View
B+
Retailer 11
-
$20,498 NZD
€10,984 EUR
View
B
Retailer 12
-
$21,333 NZD
$12,003 USD
View
B
Retailer 13
-
$25,072 NZD
ZAR 227,899 ZAR
View
B
Retailer 14
-
$26,653 NZD
£11,808 GBP
View
Most Expensive
B
NZ Jewellers
24a3d514-e6c5-44a4-93f6-2286ae657d6d · Oct 30
$28,444 NZD
$16,004 USD
View
14 more retailers have this diamond
Prices start from $15,498 NZDSave up to $12,946 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
$15,498 NZD