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Marquise|Natural|GIA

1.51ct I SI2 Marquise Natural Diamond

EX • I/SI2 • GIA 5566477733

Certificate GIA 5566477733

Diamond specifications and retailer prices

From $6,750 USD
SGD 9,121 SGD
As of November 1, 2026
Save $2,818 USD (29%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $9,568 USD at Diamonds Direct · As of November 1, 2026
View at 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5566477733. Listed at 12 retailers as of November 1, 2026, with prices from $6,750 to $9,568, a $2,818 spread on the same certified stone. Diamonds Direct lists it at $9,568. 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
I
Color
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle39.9°
Pavilion angle38.11°
OriginNatural
Grading LabGIA
CertificateGIA 5566477733
Dimensions11.22 × 5.93 × 3.64 mm
L/W Ratio1.89
Culet sizeNone
Top View
11.22 mm5.93 mm1.51 ctI / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 5566477733
Side View
Table 59.0%Crown 39.9°Girdle: MED-THKPavilion 38.11°Culet: NoneDepth 61.5%

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: $9,568 USD|Low: $6,750 USD|High: $9,568 USD|Avg: $7,827 USD
Diamonds Direct
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 4$6,750 USD
Retailer 7$7,009 USD
Retailer 9$7,027 USD
Retailer 8$7,040 USD
Retailer 12$7,143 USD
Retailer 11$7,241 USD
Retailer 5$7,445 USD
Retailer 3$8,409 USD
Retailer 10$8,476 USD
Retailer 6$8,533 USD
Retailer 2$8,602 USD
Diamonds Direct$9,568 USD

30 data points across 12 retailers

12 retailers$6,750 USD to $9,568 USD

A
Cheapest Retailer
-
$6,750 USD
SGD 9,121 SGD
A
Retailer 2
-
$7,009 USD
View
A
Retailer 3
-
$7,027 USD
SGD 9,496 SGD
View
B+
Retailer 4
-
$7,040 USD
View
B+
Retailer 5
-
$7,143 USD
View
B+
Retailer 6
-
$7,241 USD
View
B+
Retailer 7
-
$7,445 USD
£5,862 GBP
View
B+
Retailer 8
-
$8,409 USD
View
B+
Retailer 9
-
$8,476 USD
View
Retailer 10
-
$8,533 USD
View
Price last confirmed 7 days ago
B+
Retailer 11
-
$8,602 USD
€8,192 EUR
View
Most Expensive
B
Diamonds Direct
1129909 · Nov 1
$9,568 USD
View
11 more retailers have this diamond
Prices start from $6,750 USDSave up to $2,818 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
$6,750 USD