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Marquise|Natural|GIA

1.20ct H SI1 Marquise Natural Diamond

VG • H/SI1 • GIA 7558189177

Certificate GIA 7558189177

Diamond specifications and retailer prices

From $6,115 NZD
As of November 4, 2026
Save $4,843 NZD (44%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $10,959 NZD at Helzberg Diamonds · As of November 6, 2026
View at Helzberg Diamonds

About this 1.2ct natural marquise diamond

This 1.2ct natural marquise sits in the classic one-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 7558189177. Listed at 15 retailers as of November 4, 2026, with prices from $6,115 to $10,959, a $4,843 spread on the same certified stone. Helzberg Diamonds lists it at $10,959. 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

1.20
Carat
H
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle39.96°
Pavilion angle40.45°
OriginNatural
Grading LabGIA
CertificateGIA 7558189177
Dimensions10.13 × 5.47 × 3.52 mm
L/W Ratio1.85
Culet sizeNone
Top View
10.13 mm5.47 mm1.20 ctH / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7558189177
Side View
Table 61.0%Crown 39.96°Girdle: MED-VTKPavilion 40.45°Culet: NoneDepth 64.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $10,959 NZD|Low: $6,115 NZD|High: $11,642 NZD|Avg: $8,109 NZD|-5.9%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 7, 2026
Retailer 11$6,115 NZD
Retailer 13$6,214 NZD
Retailer 10$6,391 NZD
Retailer 9$6,536 NZD
Retailer 5$6,674 NZD
Retailer 6$6,981 NZD
Retailer 2$7,059 NZD
Retailer 3$7,778 NZD
Retailer 4$7,867 NZD
Retailer 8$8,132 NZD
Retailer 7$8,484 NZD
Retailer 12$10,313 NZD
Retailer 14$10,950 NZD
Helzberg Diamonds$10,959 NZD

28 data points across 14 retailers

15 retailers$6,115 NZD to $10,959 NZD

B+
Cheapest Retailer
-
$6,115 NZD
B+
Retailer 2
-
$6,214 NZD
View
B+
Retailer 3
-
$6,391 NZD
View
B+
Retailer 4
-
$6,536 NZD
View
B+
Retailer 5
-
$6,674 NZD
View
B+
Retailer 6
-
$6,981 NZD
View
B+
Retailer 7
-
$7,059 NZD
View
B+
Retailer 8
-
$7,778 NZD
View
B+
Retailer 9
-
$7,867 NZD
View
B+
Retailer 10
-
$8,132 NZD
View
B
Retailer 11
-
$8,484 NZD
View
B
Retailer 12
-
$8,893 NZD
View
B
Retailer 13
-
$10,313 NZD
View
B
Retailer 14
-
$10,950 NZD
View
Most Expensive
B
Helzberg Diamonds
XZRNLLOHOPHNN · Nov 6
$10,959 NZD
$6,075 USD
View
14 more retailers have this diamond
Prices start from $6,115 NZDSave up to $4,843 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.

B+
1.20ct Marquise
$6,115 NZD