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Marquise|Natural|GIA

1.51ct F SI2 Marquise Natural Diamond

EX • F/SI2 • GIA 1557914895

Certificate GIA 1557914895

Diamond specifications and retailer prices

From $8,409 USD
As of November 1, 2026
Save $6,815 USD (45%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $15,224 USD at NZ Jewellers · As of October 30, 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 F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1557914895. Listed at 14 retailers as of October 30, 2026, with prices from $8,409 to $15,224, a $6,815 spread on the same certified stone. NZ Jewellers lists it at $15,224. 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

1.51
Carat
F
Color
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Pavilion angle40.11°
OriginNatural
Grading LabGIA
CertificateGIA 1557914895
Dimensions11.38 × 5.99 × 3.79 mm
L/W Ratio1.90
Key to symbols
Twinning Wisp, Feather, Crystal
Top View
11.38 mm5.99 mm1.51 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1557914895
Side View
Table 56.0%CrownGirdle: THK-VTKPavilion 40.11°Culet: 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 1
Current: $15,224 USD|Low: $7,808 USD|High: $15,412 USD|Avg: $10,521 USD|-1.2%
NZ Jewellers
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
November 2, 2026
Retailer 4$7,808 USD
Retailer 9$8,409 USD
Retailer 5$8,637 USD
Retailer 14$9,023 USD
Retailer 10$9,060 USD
Retailer 12$9,896 USD
Retailer 6$10,015 USD
Retailer 8$10,048 USD
Retailer 3$11,030 USD
Retailer 13$11,030 USD
Retailer 2$11,259 USD
Retailer 11$11,400 USD
Retailer 7$14,266 USD
NZ Jewellers$15,224 USD

28 data points across 14 retailers

14 retailers$8,409 USD to $15,224 USD

Retailer 1
-
$7,808 USD
HK$61,000 HKD
Price last confirmed 46 days ago
A
Retailer 2
-
$8,409 USD
View
B+
Retailer 3
-
$8,787 USD
A$13,518 AUD
View
B+
Retailer 4
-
$9,023 USD
View
Final sale: no returns
B+
Retailer 5
-
$9,060 USD
View
B+
Retailer 6
-
$9,896 USD
View
B+
Retailer 7
-
$10,015 USD
A$15,408 AUD
View
B+
Retailer 8
-
$10,048 USD
View
B
Retailer 9
-
$11,030 USD
View
B
Retailer 10
-
$11,030 USD
View
B
Retailer 11
-
$11,259 USD
€10,723 EUR
View
B+
Retailer 12
-
$11,400 USD
View
B
Retailer 13
-
$14,266 USD
£11,233 GBP
View
Most Expensive
B
NZ Jewellers
6332d3ed-82a0-4266-a848-855a4ef875d4 · Oct 30
$15,224 USD
View
13 more retailers have this diamond
Prices start from $8,409 USDSave up to $6,815 USD

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
$8,409 USD