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Marquise|Natural|GIA

1.51ct E SI2 Marquise Natural Diamond

VG • E/SI2 • GIA 1555020554

Certificate GIA 1555020554

Diamond specifications and retailer prices

From $9,718 AUD
SGD 9,225 SGD
As of October 31, 2026
Save $2,706 AUD (22%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $12,424 AUD at Diamond Exchange Canada · As of October 30, 2026
View at Diamond Exchange Canada

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1555020554. Listed at 8 retailers as of October 30, 2026, with prices from $9,718 to $12,424, a $2,706 spread on the same certified stone. Diamond Exchange Canada lists it at $12,424. 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

1.51
Carat
E
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle35.23°
Pavilion angle39.78°
OriginNatural
Grading LabGIA
CertificateGIA 1555020554
Dimensions11.51 × 6.12 × 3.55 mm
L/W Ratio1.88
Culet sizeNone
Top View
11.51 mm6.12 mm1.51 ctE / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 1555020554
Side View
Table 60.0%Crown 35.23°Girdle: THN-THKPavilion 39.78°Culet: NoneDepth 57.9%

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: Oct 31
Current: $12,424 AUD|Low: $7,776 AUD|High: $12,865 AUD|Avg: $10,945 AUD
Diamond Exchange Canada
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 10$7,776 AUD
Retailer 6$9,718 AUD
Retailer 7$9,913 AUD
Retailer 2$10,284 AUD
Retailer 9$10,740 AUD
Retailer 5$11,057 AUD
Retailer 4$11,466 AUD
Retailer 3$11,633 AUD
Retailer 8$12,142 AUD
Retailer 11$12,165 AUD
Diamond Exchange Canada$12,424 AUD

24 data points across 11 retailers

8 retailers$9,718 AUD to $12,424 AUD

A
Cheapest Retailer
-
$9,718 AUD
SGD 9,225 SGD
A
Retailer 2
-
$9,913 AUD
SGD 9,410 SGD
View
A
Retailer 3
-
$10,284 AUD
$7,224 USD
View
A
Retailer 4
-
$11,057 AUD
$7,767 USD
View
A
Retailer 5
-
$11,466 AUD
$8,054 USD
View
A
Retailer 6
-
$12,142 AUD
$8,529 USD
View
B+
Retailer 7
-
$12,165 AUD
$8,545 USD
View
Most Expensive
B+
Diamond Exchange Canada
1989721906 · Oct 30
$12,424 AUD
CA$12,121 CAD
View
7 more retailers have this diamond
Prices start from $9,718 AUDSave up to $2,706 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
1.51ct Marquise
$9,718 AUD