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Marquise|Natural|GIA

1.51ct G SI1 Marquise Natural Diamond

EX • G/SI1 • GIA 6555666190

Certificate GIA 6555666190

Diamond specifications and retailer prices

From $14,583 NZD
$8,205 USD
As of November 1, 2026
Save $5,501 NZD (27%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $20,083 NZD at Jared · As of November 2, 2026
View at Jared

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6555666190. Listed at 9 retailers as of November 1, 2026, with prices from $14,583 to $20,083, a $5,501 spread on the same certified stone. Jared lists it at $20,083. 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
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6555666190
Dimensions11.41 × 5.94 × 3.77 mm
L/W Ratio1.92
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather, Cavity, Needle
Top View
11.41 mm5.94 mm1.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6555666190
Side View
Table 60.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 63.4%

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: $20,083 NZD|Low: $15,178 NZD|High: $21,025 NZD|Avg: $18,309 NZD|-4.5%
Jared
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 4$16,124 NZD
Retailer 5$16,353 NZD
Retailer 2$17,226 NZD
Retailer 6$17,325 NZD
Retailer 8$18,372 NZD
Retailer 3$19,426 NZD
Retailer 7$19,426 NZD
Jared$20,083 NZD

16 data points across 8 retailers

9 retailers$14,583 NZD to $20,083 NZD

A
Cheapest Retailer
-
$14,583 NZD
$8,205 USD
B+
Retailer 2
-
$16,124 NZD
SGD 12,260 SGD
View
B+
Retailer 3
-
$16,353 NZD
$9,201 USD
View
Final sale: no returns
B+
Retailer 4
-
$17,226 NZD
£7,631 GBP
View
B+
Retailer 5
-
$17,325 NZD
$9,748 USD
View
B+
Retailer 6
-
$18,372 NZD
$10,337 USD
View
B
Retailer 7
-
$19,426 NZD
$10,930 USD
View
B
Retailer 8
-
$19,426 NZD
$10,930 USD
View
Most Expensive
B
Jared
159480438 · Nov 2
$20,083 NZD
$11,300 USD
View
8 more retailers have this diamond
Prices start from $14,583 NZDSave up to $5,501 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
$14,583 NZD