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Marquise|Natural|GIA

1.50ct D SI1 Marquise Natural Diamond

EX • D/SI1 • GIA 7556372547

Certificate GIA 7556372547

Diamond specifications and retailer prices

From $12,579 AUD
As of November 6, 2026
Save $3,374 AUD (21%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $15,953 AUD at Blue Nile · As of November 5, 2026
View at Blue Nile

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 7556372547. Listed at 8 retailers as of November 5, 2026, with prices from $12,579 to $15,953, a $3,374 spread on the same certified stone. Blue Nile lists it at $15,953. 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
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7556372547
Dimensions11.44 × 5.93 × 3.75 mm
L/W Ratio1.93
Culet sizeNone
Key to symbols
Crystal, Feather, Indented Natural, Twinning Wisp, Needle
Top View
11.44 mm5.93 mm1.50 ctD / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 7556372547
Side View
Table 61.0%CrownGirdle: MED-ETKPavilionCulet: NoneDepth 63.3%

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 6
Current: $15,953 AUD|Low: $12,209 AUD|High: $16,477 AUD|Avg: $14,074 AUD|-3.2%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 2$12,579 AUD
Retailer 4$12,748 AUD
Retailer 3$13,559 AUD
Retailer 5$13,655 AUD
Retailer 6$14,237 AUD
Retailer 7$14,643 AUD
Blue Nile$15,953 AUD

45 data points across 7 retailers

8 retailers$12,579 AUD to $15,953 AUD

A
Cheapest Retailer
-
$12,579 AUD
A
Retailer 2
-
$12,748 AUD
View
A
Retailer 3
-
$13,559 AUD
View
B+
Retailer 4
-
$13,655 AUD
View
B+
Retailer 5
-
$14,237 AUD
View
Final sale: no returns
B+
Retailer 6
-
$14,643 AUD
View
B+
Retailer 7
-
$14,995 AUD
View
Most Expensive
B+
Blue Nile
29351770 · Nov 5
$15,953 AUD
$10,961 USD
View
7 more retailers have this diamond
Prices start from $12,579 AUDSave up to $3,374 AUD

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
$12,579 AUD