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Marquise|Natural|GIA

1.20ct I SI1 Marquise Natural Diamond

GD • I/SI1 • GIA 7568597454

Certificate GIA 7568597454

Diamond specifications and retailer prices

From $5,801 NZD
As of November 4, 2026
Save $5,231 NZD (47%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $11,033 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 7568597454. Listed at 14 retailers as of November 4, 2026, with prices from $5,801 to $11,033, a $5,231 spread on the same certified stone. Helzberg Diamonds lists it at $11,033. 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
I
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceStrong
Crown angle38.98°
Pavilion angle40.29°
OriginNatural
Grading LabGIA
CertificateGIA 7568597454
Dimensions10.11 × 5.45 × 3.56 mm
L/W Ratio1.86
Culet sizeNone
Top View
10.11 mm5.45 mm1.20 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 7568597454
Side View
Table 55.0%Crown 38.98°Girdle: STK-ETKPavilion 40.29°Culet: NDepth 65.4%

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: $11,033 NZD|Low: $5,801 NZD|High: $11,033 NZD|Avg: $7,591 NZD
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 13$5,801 NZD
Retailer 11$5,899 NZD
Retailer 8$5,942 NZD
Retailer 6$6,198 NZD
Retailer 12$6,305 NZD
Retailer 2$6,700 NZD
Retailer 5$6,988 NZD
Retailer 9$7,347 NZD
Retailer 14$7,400 NZD
Retailer 4$7,504 NZD
Retailer 7$7,713 NZD
Retailer 10$9,784 NZD
Retailer 3$10,362 NZD
Helzberg Diamonds$11,033 NZD

24 data points across 14 retailers

14 retailers$5,801 NZD to $11,033 NZD

B+
Cheapest Retailer
-
$5,801 NZD
B+
Retailer 2
-
$5,899 NZD
View
B+
Retailer 3
-
$5,942 NZD
View
B
Retailer 4
-
$6,198 NZD
View
B
Retailer 5
-
$6,305 NZD
View
B
Retailer 6
-
$6,700 NZD
View
B
Retailer 7
-
$6,988 NZD
View
B
Retailer 8
-
$7,347 NZD
View
B
Retailer 9
-
$7,400 NZD
View
B
Retailer 10
-
$7,504 NZD
View
B
Retailer 11
-
$7,713 NZD
View
C
Retailer 12
-
$9,784 NZD
View
C
Retailer 13
-
$10,362 NZD
View
Most Expensive
C
Helzberg Diamonds
XZRNLMOLPNKLK · Nov 6
$11,033 NZD
$6,116 USD
View
13 more retailers have this diamond
Prices start from $5,801 NZDSave up to $5,231 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
$5,801 NZD