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Marquise|Natural|GIA

1.51ct E SI1 Marquise Natural Diamond

E/SI1 • GIA 1558512133

Certificate GIA 1558512133

Diamond specifications and retailer prices

From $13,175 AUD
HK$72,300 HKD
As of November 1, 2026
Save $9,817 AUD (43%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $25,034 AUD at NZ Jewellers · As of September 28, 2026
View at NZ Jewellers

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 SI1 clarity (slightly-included) and certified by GIA 1558512133. Listed at 15 retailers as of November 1, 2026, with a 75% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
SI1
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1558512133
Dimensions11.64 × 5.87 × 3.72 mm
L/W Ratio1.98
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Crystal, Cavity, Indented Natural
Top View
11.64 mm5.87 mm1.51 ctE / SI1
OriginNatural
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1558512133
Side View
Table 60.0%CrownGirdle: VTN-VTKPavilionCulet: NoneDepth 63.5%

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: $13,539 AUD|Low: $13,175 AUD|High: $23,740 AUD|Avg: $16,155 AUD|-3.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 6$13,175 AUD
Retailer 1$13,539 AUD
Retailer 9$14,628 AUD
Retailer 8$15,336 AUD
Retailer 5$16,218 AUD
Retailer 7$16,249 AUD
Retailer 3$16,471 AUD
Retailer 4$20,315 AUD
Retailer 2$22,992 AUD

40 data points across 9 retailers

15 retailers$13,175 AUD to $22,992 AUD

A
Cheapest Retailer
-
$13,175 AUD
HK$72,300 HKD
A
Retailer 2
-
$13,539 AUD
₹905,741 INR
View
B+
Retailer 3
-
$13,958 AUD
View
Retailer 4
-
$14,628 AUD
SGD 13,886 SGD
View
Price last confirmed 20 days ago
B+
Retailer 5
-
$15,336 AUD
$10,773 USD
View
Retailer 6
-
$16,218 AUD
View
Price last confirmed 8 days ago
B
Retailer 7
-
$16,249 AUD
$11,414 USD
View
Final sale: no returns
B+
Retailer 8
-
$16,471 AUD
£9,110 GBP
View
Retailer 9
-
$17,819 AUD
$12,517 USD
View
Price last confirmed 24 days ago
Retailer 10
-
$17,962 AUD
$12,617 USD
View
Price last confirmed 33 days ago
Retailer 11
-
$18,165 AUD
$12,760 USD
View
Price last confirmed 31 days ago
B
Retailer 12
-
$20,315 AUD
$14,270 USD
View
B
Retailer 13
-
$22,992 AUD
£12,717 GBP
View
Retailer 14
-
$24,836 AUD
$17,446 USD
View
Price last confirmed 29 days ago
Most Expensive
NZ Jewellers
ad8b1f53-a961-40b5-927b-82aed05985d4 · Sep 28
$25,034 AUD
$17,585 USD
View
Price last confirmed 34 days ago
14 more retailers have this diamond
Prices start from $13,175 AUDSave up to $9,817 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
$13,175 AUD