Marquise|Natural|GIA

1.51ct L SI1 Marquise Natural Diamond

EX • L/SI1 • GIA 3545615128

Certificate GIA 3545615128

Diamond specifications and retailer prices

From $3,366 USD
As of November 6, 2026
Save $1,698 USD (34%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $5,064 USD at 77 Diamonds · As of November 6, 2026
View at 77 Diamonds

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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 3545615128. Listed at 4 retailers as of November 6, 2026, with prices from $3,366 to $5,064, a $1,698 spread on the same certified stone. 77 Diamonds lists it at $5,064. 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
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 3545615128
Dimensions11.37 × 5.98 × 3.78 mm
L/W Ratio1.90
Top View
11.37 mm5.98 mm1.51 ctL / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 3545615128
Side View
Table 62.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 63.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 6
Current: $5,064 USD|Low: $3,217 USD|High: $7,981 USD|Avg: $4,791 USD|+0.5%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 5$3,217 USD
Retailer 2$3,366 USD
Retailer 4$3,899 USD
Retailer 3$4,204 USD
Retailer 8$4,406 USD
77 Diamonds$5,064 USD
Retailer 6$6,165 USD
Retailer 7$7,981 USD

35 data points across 8 retailers

4 retailers$3,366 USD to $5,064 USD

B+
Cheapest Retailer
-
$3,366 USD
B
Retailer 2
-
$3,899 USD
View
B
Retailer 3
-
$4,204 USD
View
Most Expensive
B
77 Diamonds
MQMBZ4AH8KPW · Nov 6
$5,064 USD
£3,987 GBP
View
3 more retailers have this diamond
Prices start from $3,366 USDSave up to $1,698 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.

B+
1.51ct Marquise
$3,366 USD