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Marquise|Natural|GIA

1.51ct F SI2 Marquise Natural Diamond

GD • F/SI2 • GIA 1558632218

Certificate GIA 1558632218

Diamond specifications and retailer prices

From $10,975 NZD
As of November 5, 2026
Save $7,042 NZD (39%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $18,017 NZD at Helzberg Diamonds · As of November 6, 2026
View at Helzberg 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 F colour (colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1558632218. Listed at 12 retailers as of November 5, 2026, with prices from $10,975 to $18,017, a $7,042 spread on the same certified stone. Helzberg Diamonds lists it at $18,017. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
F
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.67°
Pavilion angle39.9°
OriginNatural
Grading LabGIA
CertificateGIA 1558632218
Dimensions10.67 × 5.86 × 3.91 mm
L/W Ratio1.82
Culet sizeNone
Top View
10.67 mm5.86 mm1.51 ctF / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1558632218
Side View
Table 60.0%Crown 42.67°Girdle: STK-VTKPavilion 39.9°Culet: NoneDepth 66.7%

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 5
Current: $18,017 NZD|Low: $10,975 NZD|High: $18,818 NZD|Avg: $13,395 NZD|-4.3%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 7, 2026
Retailer 6$10,975 NZD
Retailer 5$11,487 NZD
Retailer 9$11,614 NZD
Retailer 11$11,880 NZD
Retailer 2$12,093 NZD
Retailer 7$12,571 NZD
Retailer 3$13,751 NZD
Retailer 10$13,841 NZD
Retailer 4$13,919 NZD
Retailer 8$14,014 NZD
Helzberg Diamonds$18,017 NZD

42 data points across 11 retailers

12 retailers$10,975 NZD to $18,017 NZD

A
Cheapest Retailer
-
$10,975 NZD
A
Retailer 2
-
$11,487 NZD
View
A
Retailer 3
-
$11,614 NZD
View
A
Retailer 4
-
$11,880 NZD
View
A
Retailer 5
-
$12,093 NZD
View
A
Retailer 6
-
$12,571 NZD
View
B+
Retailer 7
-
$13,751 NZD
View
B+
Retailer 8
-
$13,841 NZD
View
B+
Retailer 9
-
$13,919 NZD
View
B+
Retailer 10
-
$14,014 NZD
View
B+
Retailer 11
-
$14,217 NZD
View
Most Expensive
B
Helzberg Diamonds
XZRHLLOMJIIHO · Nov 6
$18,017 NZD
$9,988 USD
View
11 more retailers have this diamond
Prices start from $10,975 NZDSave up to $7,042 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
$10,975 NZD