Marquise|Natural|GIA

1.50ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 7553879339

Certificate GIA 7553879339

Diamond specifications and retailer prices

From $6,738 USD
As of November 2, 2026
Save $4,702 USD (41%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $13,729 USD 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
Color
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: $13,729 USD|Low: $5,916 USD|High: $13,729 USD|Avg: $7,788 USD|+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$6,454 USD
Retailer 8$6,455 USD
Retailer 10$6,620 USD
Retailer 19$6,738 USD
Retailer 4$6,740 USD
Retailer 14$6,857 USD
Retailer 17$6,891 USD
Retailer 3$6,894 USD
Retailer 9$6,993 USD
Retailer 12$7,060 USD
Retailer 6$7,100 USD
Retailer 18$7,114 USD
Retailer 13$7,661 USD
Retailer 2$7,822 USD
Retailer 21$7,934 USD
Retailer 7$8,068 USD
Retailer 20$8,359 USD
Retailer 5$8,488 USD
Retailer 15$8,569 USD
Retailer 16$11,440 USD
NZ Jewellers$13,729 USD

30 data points across 21 retailers

19 retailers$6,738 USD to $11,440 USD

Retailer 1
-
$6,455 USD
Price last confirmed 21 days ago
Retailer 2
-
$6,620 USD
View
Price last confirmed 15 days ago
B+
Retailer 3
-
$6,738 USD
View
Retailer 4
-
$6,857 USD
View
Price last confirmed 33 days ago
B
Retailer 5
-
$6,891 USD
View
B
Retailer 6
-
$6,894 USD
View
Retailer 7
-
$6,993 USD
View
Price last confirmed 17 days ago
Retailer 8
-
$7,060 USD
View
Price last confirmed 11 days ago
Retailer 9
-
$7,100 USD
View
Price last confirmed 21 days ago
B
Retailer 10
-
$7,114 USD
View
B
Retailer 11
-
$7,661 USD
View
B
Retailer 12
-
$7,822 USD
View
B
Retailer 13
-
$7,934 USD
View
Retailer 14
-
$8,068 USD
View
Price last confirmed 16 days ago
B
Retailer 15
-
$8,359 USD
View
Retailer 16
-
$8,488 USD
View
Price last confirmed 20 days ago
B
Retailer 17
-
$8,569 USD
View
B
Retailer 18
-
$11,440 USD
View
Most Expensive
NZ Jewellers
1bad364c-c989-4b2b-9b91-ec43e7907c46 · Oct 30
$13,729 USD
View
Price last confirmed 7 days ago
18 more retailers have this diamond
Prices start from $6,738 USDSave up to $4,702 USD

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
$6,738 USD