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Marquise|Natural|GIA

1.50ct H SI1 Marquise Natural Diamond

GD • H/SI1 • GIA 2557911893

Certificate GIA 2557911893

Diamond specifications and retailer prices

From $9,494 AUD
As of November 6, 2026
Save $2,322 AUD (20%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $11,816 AUD at 77 Diamonds · As of November 6, 2026
View at 77 Diamonds

About this 1.5ct natural marquise diamond

This 1.5ct natural marquise sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2557911893. Listed at 5 retailers as of November 6, 2026, with prices from $9,494 to $11,816, a $2,322 spread on the same certified stone. 77 Diamonds lists it at $11,816. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.50
Carat
H
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryFair
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557911893
Dimensions11.28 × 6.08 × 3.72 mm
L/W Ratio1.86
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather, Cavity, Needle, Indented Natural, Natural
Top View
11.28 mm6.08 mm1.50 ctH / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryFair
FluorescenceNone
CertificateGIA 2557911893
Side View
Table 65.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 61.2%

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 6
Current: $11,816 AUD|Low: $9,494 AUD|High: $11,933 AUD|Avg: $10,607 AUD|+5.9%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 2$9,494 AUD
Retailer 4$10,865 AUD
Retailer 3$11,764 AUD
77 Diamonds$11,816 AUD

45 data points across 4 retailers

5 retailers$9,494 AUD to $11,816 AUD

B+
Cheapest Retailer
-
$9,494 AUD
B
Retailer 2
-
$10,865 AUD
View
B
Retailer 3
-
$11,316 AUD
View
B
Retailer 4
-
$11,764 AUD
View
Most Expensive
B
77 Diamonds
MQCPX43UR4BA · Nov 6
$11,816 AUD
£6,393 GBP
View
4 more retailers have this diamond
Prices start from $9,494 AUDSave up to $2,322 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.

B+
1.50ct Marquise
$9,494 AUD