Marquise|Natural|GIA

1.50ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 7553879339

Certificate GIA 7553879339

Diamond specifications and retailer prices

From $12,155 NZD
As of November 2, 2026
Save $8,482 NZD (41%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $24,766 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 J 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 7553879339. Listed at 19 retailers as of November 2, 2026, with a 70% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 7553879339
Dimensions11.02 × 6.11 × 4.00 mm
L/W Ratio1.80
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Crystal
Top View
11.02 mm6.11 mm1.50 ctJ / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7553879339
Side View
Table 60.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 65.5%

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: $24,766 NZD|Low: $10,672 NZD|High: $24,766 NZD|Avg: $14,048 NZD|+17.4%
NZ Jewellers
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
Retailer 19
Retailer 20
Retailer 21
November 3, 2026
Retailer 11$11,642 NZD
Retailer 8$11,644 NZD
Retailer 10$11,942 NZD
Retailer 19$12,155 NZD
Retailer 4$12,158 NZD
Retailer 14$12,369 NZD
Retailer 17$12,431 NZD
Retailer 3$12,436 NZD
Retailer 9$12,615 NZD
Retailer 12$12,736 NZD
Retailer 6$12,808 NZD
Retailer 18$12,833 NZD
Retailer 13$13,820 NZD
Retailer 2$14,110 NZD
Retailer 21$14,312 NZD
Retailer 7$14,554 NZD
Retailer 20$15,079 NZD
Retailer 5$15,312 NZD
Retailer 15$15,458 NZD
Retailer 16$20,637 NZD
NZ Jewellers$24,766 NZD

30 data points across 21 retailers

19 retailers$12,155 NZD to $20,637 NZD

Retailer 1
-
$11,644 NZD
Price last confirmed 22 days ago
Retailer 2
-
$11,942 NZD
View
Price last confirmed 16 days ago
B+
Retailer 3
-
$12,155 NZD
View
Retailer 4
-
$12,369 NZD
View
Price last confirmed 34 days ago
B
Retailer 5
-
$12,431 NZD
View
B
Retailer 6
-
$12,436 NZD
View
Retailer 7
-
$12,615 NZD
View
Price last confirmed 18 days ago
Retailer 8
-
$12,736 NZD
View
Price last confirmed 12 days ago
Retailer 9
-
$12,808 NZD
View
Price last confirmed 22 days ago
B
Retailer 10
-
$12,833 NZD
View
B
Retailer 11
-
$13,820 NZD
View
B
Retailer 12
-
$14,110 NZD
View
B
Retailer 13
-
$14,312 NZD
View
Retailer 14
-
$14,554 NZD
View
Price last confirmed 17 days ago
B
Retailer 15
-
$15,079 NZD
View
Retailer 16
-
$15,312 NZD
View
Price last confirmed 21 days ago
B
Retailer 17
-
$15,458 NZD
View
B
Retailer 18
-
$20,637 NZD
View
Most Expensive
NZ Jewellers
1bad364c-c989-4b2b-9b91-ec43e7907c46 · Oct 30
$24,766 NZD
$13,729 USD
View
Price last confirmed 7 days ago
18 more retailers have this diamond
Prices start from $12,155 NZDSave up to $8,482 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
$12,155 NZD