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Marquise|Natural|GIA

1.50ct D SI1 Marquise Natural Diamond

EX • D/SI1 • GIA 6555718804

Certificate GIA 6555718804

Diamond specifications and retailer prices

From $9,145 USD
As of November 1, 2026
Save $8,391 USD (48%) vs most expensive(unlock to see where)
31 retailers carry this diamond
Most expensive: $17,536 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6555718804. Listed at 31 retailers as of October 30, 2026, with prices from $9,145 to $17,536, a $8,391 spread on the same certified stone. NZ Jewellers lists it at $17,536. 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
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6555718804
Dimensions10.91 × 5.92 × 3.77 mm
L/W Ratio1.84
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cavity, Needle, Indented Natural, Natural
Top View
10.91 mm5.92 mm1.50 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6555718804
Side View
Table 63.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 63.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $17,536 USD|Low: $8,384 USD|High: $17,968 USD|Avg: $11,770 USD
NZ Jewellers
Retailer 2
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Retailer 29
November 2, 2026
Retailer 27$9,145 USD
Retailer 15$9,400 USD
Retailer 11$9,750 USD
Retailer 3$9,763 USD
Retailer 16$10,035 USD
Retailer 26$10,061 USD
Retailer 9$10,346 USD
Retailer 14$10,395 USD
Retailer 10$10,522 USD
Retailer 28$10,522 USD
Retailer 17$11,212 USD
Retailer 18$11,225 USD
Retailer 13$11,275 USD
Retailer 29$11,399 USD
Retailer 25$11,430 USD
Retailer 12$11,574 USD
Retailer 8$11,637 USD
Retailer 4$11,737 USD
Retailer 19$11,828 USD
Retailer 21$11,915 USD
Retailer 20$12,506 USD
Retailer 6$12,535 USD
Retailer 22$12,814 USD
Retailer 7$12,818 USD
Retailer 5$13,152 USD
Retailer 2$13,253 USD
Retailer 24$15,458 USD
Retailer 23$16,433 USD
NZ Jewellers$17,536 USD

36 data points across 29 retailers

31 retailers$9,145 USD to $17,536 USD

Retailer 1
-
$7,565 USD
HK$59,100 HKD
Price last confirmed 38 days ago
Retailer 2
-
$8,105 USD
View
Price last confirmed 46 days ago
A
Retailer 3
-
$9,145 USD
View
A
Retailer 4
-
$9,400 USD
View
B+
Retailer 5
-
$9,750 USD
View
B+
Retailer 6
-
$9,763 USD
View
B+
Retailer 7
-
$9,878 USD
A$15,196 AUD
View
B+
Retailer 8
-
$10,035 USD
View
B+
Retailer 9
-
$10,061 USD
View
B+
Retailer 10
-
$10,346 USD
CA$14,370 CAD
View
B+
Retailer 11
-
$10,395 USD
View
B+
Retailer 12
-
$10,522 USD
View
B+
Retailer 13
-
$10,522 USD
View
Final sale: no returns
B+
Retailer 14
-
$11,212 USD
View
B+
Retailer 15
-
$11,225 USD
View
B+
Retailer 16
-
$11,275 USD
£8,878 GBP
View
B+
Retailer 17
-
$11,399 USD
View
Retailer 18
-
$11,430 USD
A$17,585 AUD
View
Price last confirmed 9 days ago
B+
Retailer 19
-
$11,574 USD
View
B+
Retailer 20
-
$11,637 USD
View
B+
Retailer 21
-
$11,737 USD
View
Retailer 22
-
$11,782 USD
View
Price last confirmed 62 days ago
Retailer 23
-
$11,828 USD
View
Price last confirmed 19 days ago
B
Retailer 24
-
$12,506 USD
View
B
Retailer 25
-
$12,535 USD
View
B
Retailer 26
-
$12,818 USD
View
B+
Retailer 27
-
$13,152 USD
View
B+
Retailer 28
-
$13,253 USD
€12,622 EUR
View
B
Retailer 29
-
$15,458 USD
ZAR 249,721 ZAR
View
B
Retailer 30
-
$16,433 USD
£12,939 GBP
View
Most Expensive
B
NZ Jewellers
9010dca9-b235-4b2b-8fda-183916b6f45c · Oct 30
$17,536 USD
View
30 more retailers have this diamond
Prices start from $9,145 USDSave up to $8,391 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.

A
1.50ct Marquise
$9,145 USD