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Marquise|Natural|GIA

1.51ct E SI1 Marquise Natural Diamond

VG • E/SI1 • GIA 7558189154

Certificate GIA 7558189154

Diamond specifications and retailer prices

From $14,122 AUD
$9,920 USD
As of October 30, 2026
Save $9,647 AUD (41%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $23,769 AUD at MOH London · As of November 1, 2026
View at MOH London

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), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 7558189154. Listed at 13 retailers as of October 30, 2026, with prices from $14,122 to $23,769, a $9,647 spread on the same certified stone. MOH London lists it at $23,769. 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
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.18°
Pavilion angle40.36°
OriginNatural
Grading LabGIA
CertificateGIA 7558189154
Dimensions10.99 × 5.92 × 3.83 mm
L/W Ratio1.86
Culet sizeNone
Top View
10.99 mm5.92 mm1.51 ctE / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7558189154
Side View
Table 58.0%Crown 40.18°Girdle: MED-THKPavilion 40.36°Culet: NoneDepth 64.6%

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: Oct 30
Current: $23,769 AUD|Low: $12,236 AUD|High: $23,769 AUD|Avg: $16,005 AUD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 1, 2026
Retailer 7$12,236 AUD
Retailer 4$13,166 AUD
Retailer 10$13,175 AUD
Retailer 18$14,122 AUD
Retailer 17$15,033 AUD
Retailer 15$15,346 AUD
Retailer 16$15,449 AUD
Retailer 6$15,645 AUD
Retailer 8$16,172 AUD
Retailer 2$16,238 AUD
Retailer 12$16,313 AUD
Retailer 3$16,884 AUD
Retailer 11$17,029 AUD
Retailer 5$18,038 AUD
Retailer 14$19,180 AUD
Retailer 9$22,044 AUD
Retailer 13$22,360 AUD
MOH London$23,769 AUD

20 data points across 18 retailers

13 retailers$14,122 AUD to $23,769 AUD

B+
Cheapest Retailer
-
$14,122 AUD
$9,920 USD
B+
Retailer 2
-
$15,033 AUD
$10,560 USD
View
B+
Retailer 3
-
$15,346 AUD
$10,780 USD
View
B+
Retailer 4
-
$15,449 AUD
CA$15,072 CAD
View
Retailer 5
-
$16,172 AUD
$11,360 USD
View
Price last confirmed 34 days ago
B+
Retailer 6
-
$16,238 AUD
$11,406 USD
View
B+
Retailer 7
-
$16,276 AUD
$11,433 USD
View
B+
Retailer 8
-
$16,313 AUD
£9,023 GBP
View
B+
Retailer 9
-
$16,884 AUD
$11,860 USD
View
B+
Retailer 10
-
$17,029 AUD
£9,419 GBP
View
B
Retailer 11
-
$19,180 AUD
€12,831 EUR
View
B
Retailer 12
-
$22,360 AUD
ZAR 253,743 ZAR
View
Most Expensive
B
MOH London
F548230CE · Nov 1
$23,769 AUD
£13,147 GBP
View
12 more retailers have this diamond
Prices start from $14,122 AUDSave up to $9,647 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+
1.51ct Marquise
$14,122 AUD