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Marquise|Natural|GIA

1.51ct L SI2 Marquise Natural Diamond

EX • L/SI2 • GIA 1557001080

Certificate GIA 1557001080

Diamond specifications and retailer prices

From $3,732 AUD
As of November 6, 2026
Save $300 AUD (7%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $4,894 AUD at Wholesale Diamonds Direct · As of October 27, 2026
View at Wholesale Diamonds Direct

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded L colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1557001080. Listed at 7 retailers as of November 6, 2026, with a relatively tight 8% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
L
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceStrong
Crown angle38.4°
Pavilion angle42.29°
OriginNatural
Grading LabGIA
CertificateGIA 1557001080
Dimensions11.71 × 5.87 × 3.76 mm
L/W Ratio1.99
Culet sizeNone
Top View
11.71 mm5.87 mm1.51 ctL / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 1557001080
Side View
Table 61.0%Crown 38.4°Girdle: THN-THKPavilion 42.29°Culet: NoneDepth 64.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $4,136 AUD|Low: $2,912 AUD|High: $5,729 AUD|Avg: $3,956 AUD|-3.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Wholesale Diamonds Direct
October 28, 2026
Retailer 2$2,912 AUD
Retailer 3$3,221 AUD
Retailer 4$3,307 AUD
Retailer 5$3,717 AUD
Retailer 6$4,031 AUD
Retailer 1$4,136 AUD
Wholesale Diamonds Direct$4,894 AUD

35 data points across 7 retailers

7 retailers$3,732 AUD to $4,031 AUD

Retailer 1
-
$2,912 AUD
Price last confirmed 9 days ago
Retailer 2
-
$3,221 AUD
View
Price last confirmed 9 days ago
Retailer 3
-
$3,307 AUD
View
Price last confirmed 10 days ago
B+
Retailer 4
-
$3,732 AUD
View
B+
Retailer 5
-
$4,031 AUD
View
Retailer 6
-
$4,136 AUD
View
Price last confirmed 9 days ago
Most Expensive
Wholesale Diamonds Direct
262936490 · Oct 27
$4,894 AUD
$3,363 USD
View
Price last confirmed 10 days ago
6 more retailers have this diamond
Prices start from $3,732 AUDSave up to $300 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
$3,732 AUD