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Marquise|Natural|GIA

1.21ct F SI2 Marquise Natural Diamond

EX • F/SI2 • GIA 2245000215

Certificate GIA 2245000215

Diamond specifications and retailer prices

From $6,848 NZD
As of November 4, 2026
Save $5,423 NZD (44%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $12,270 NZD at Helzberg Diamonds · As of November 6, 2026
View at Helzberg Diamonds

About this 1.21ct natural marquise diamond

This 1.21ct natural marquise sits in the classic one-carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2245000215. Listed at 13 retailers as of November 4, 2026, with prices from $6,848 to $12,270, a $5,423 spread on the same certified stone. Helzberg Diamonds lists it at $12,270. 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

1.21
Carat
F
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.01°
Pavilion angle37.63°
OriginNatural
Grading LabGIA
CertificateGIA 2245000215
Dimensions10.59 × 5.59 × 3.39 mm
L/W Ratio1.89
Culet sizeNone
Top View
10.59 mm5.59 mm1.21 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2245000215
Side View
Table 58.0%Crown 40.01°Girdle: MED-THKPavilion 37.63°Culet: NoneDepth 60.7%

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 4
Current: $12,270 NZD|Low: $6,848 NZD|High: $12,777 NZD|Avg: $8,792 NZD|-4.0%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 8$6,848 NZD
Retailer 6$7,014 NZD
Retailer 4$7,017 NZD
Retailer 9$7,253 NZD
Retailer 12$7,475 NZD
Retailer 7$7,899 NZD
Retailer 10$8,659 NZD
Retailer 11$8,711 NZD
Retailer 5$8,803 NZD
Retailer 2$9,499 NZD
Retailer 3$12,211 NZD
Helzberg Diamonds$12,270 NZD

35 data points across 12 retailers

13 retailers$6,848 NZD to $12,270 NZD

A
Cheapest Retailer
-
$6,848 NZD
A
Retailer 2
-
$7,014 NZD
View
A
Retailer 3
-
$7,017 NZD
View
B+
Retailer 4
-
$7,253 NZD
View
B+
Retailer 5
-
$7,475 NZD
View
B+
Retailer 6
-
$7,899 NZD
View
B+
Retailer 7
-
$8,659 NZD
View
B+
Retailer 8
-
$8,711 NZD
View
B+
Retailer 9
-
$8,803 NZD
View
B+
Retailer 10
-
$9,135 NZD
View
B+
Retailer 11
-
$9,499 NZD
View
B
Retailer 12
-
$12,211 NZD
View
Most Expensive
B
Helzberg Diamonds
XZRIIKLGGGIHL · Nov 6
$12,270 NZD
$6,802 USD
View
12 more retailers have this diamond
Prices start from $6,848 NZDSave up to $5,423 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
1.21ct Marquise
$6,848 NZD