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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 $11,996 NZD
SGD 9,121 SGD
As of November 3, 2026
Save $5,009 NZD (29%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $17,005 NZD 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 $11,996 to $17,005, a $5,009 spread on the same certified stone. Diamonds Direct lists it at $17,005. 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
Colour
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 3
Current: $17,005 NZD|Low: $11,996 NZD|High: $17,005 NZD|Avg: $13,908 NZD
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 3, 2026
Retailer 4$11,996 NZD
Retailer 7$12,457 NZD
Retailer 9$12,489 NZD
Retailer 8$12,512 NZD
Retailer 12$12,695 NZD
Retailer 11$12,869 NZD
Retailer 2$13,343 NZD
Retailer 3$14,945 NZD
Retailer 10$15,064 NZD
Retailer 6$15,166 NZD
Retailer 5$15,288 NZD
Diamonds Direct$17,005 NZD

31 data points across 12 retailers

12 retailers$11,996 NZD to $17,005 NZD

A
Cheapest Retailer
-
$11,996 NZD
SGD 9,121 SGD
A
Retailer 2
-
$12,457 NZD
$7,009 USD
View
A
Retailer 3
-
$12,489 NZD
SGD 9,496 SGD
View
B+
Retailer 4
-
$12,512 NZD
$7,040 USD
View
B+
Retailer 5
-
$12,695 NZD
$7,143 USD
View
B+
Retailer 6
-
$12,869 NZD
$7,241 USD
View
B+
Retailer 7
-
$13,343 NZD
£5,911 GBP
View
B+
Retailer 8
-
$14,945 NZD
$8,409 USD
View
B+
Retailer 9
-
$15,064 NZD
$8,476 USD
View
Retailer 10
-
$15,166 NZD
$8,533 USD
View
Price last confirmed 7 days ago
B+
Retailer 11
-
$15,288 NZD
€8,192 EUR
View
Most Expensive
B
Diamonds Direct
1129909 · Nov 1
$17,005 NZD
$9,568 USD
View
11 more retailers have this diamond
Prices start from $11,996 NZDSave up to $5,009 NZD

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
$11,996 NZD