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Round|Natural|GIA

1.21ct F SI2 Round Natural Diamond

EX • F/SI2 • GIA 2557099524

Certificate GIA 2557099524

Diamond specifications and retailer prices

From $4,041 NZD
As of November 6, 2026
Save $4,858 NZD (55%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $11,240 NZD at NZ Jewellers · As of October 17, 2026
View at NZ Jewellers

About this 1.21ct natural round diamond

This 1.21ct natural round sits in the classic one-carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2557099524. Listed at 17 retailers as of November 2, 2026, with a 120% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2557099524
Dimensions6.79 × 6.84 × 4.16 mm
L/W Ratio1.01
Top View
6.79 mm6.84 mm1.21 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2557099524
Side View
Table 61.0%Crown 35.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.0%

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 6
Current: $4,208 NZD|Low: $4,017 NZD|High: $9,099 NZD|Avg: $5,561 NZD|-2.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 11$4,041 NZD
Retailer 1$4,208 NZD
Retailer 7$4,721 NZD
Retailer 10$4,903 NZD
Retailer 2$4,912 NZD
Retailer 3$5,377 NZD
Retailer 9$5,527 NZD
Retailer 5$5,599 NZD
Retailer 4$5,632 NZD
Retailer 6$6,182 NZD
Retailer 8$8,899 NZD

38 data points across 11 retailers

17 retailers$4,041 NZD to $8,899 NZD

A
Cheapest Retailer
-
$4,041 NZD
A
Retailer 2
-
$4,208 NZD
View
A
Retailer 3
-
$4,721 NZD
View
A
Retailer 4
-
$4,903 NZD
View
A
Retailer 5
-
$4,912 NZD
View
Final sale: no returns
A
Retailer 6
-
$5,011 NZD
View
Retailer 7
-
$5,377 NZD
View
Price last confirmed 44 days ago
Retailer 8
-
$5,377 NZD
View
Price last confirmed 18 days ago
Retailer 9
-
$5,377 NZD
View
Price last confirmed 22 days ago
A
Retailer 10
-
$5,527 NZD
View
A
Retailer 11
-
$5,599 NZD
View
B+
Retailer 12
-
$5,632 NZD
View
B+
Retailer 13
-
$6,182 NZD
View
Retailer 14
-
$6,204 NZD
View
Price last confirmed 46 days ago
B
Retailer 15
-
$8,899 NZD
View
Retailer 16
-
$11,240 NZD
View
Price last confirmed 43 days ago
Most Expensive
NZ Jewellers
7f9bf449-dab7-4491-b009-3dc9b40f010e · Oct 17
$11,240 NZD
$6,231 USD
View
Price last confirmed 20 days ago
16 more retailers have this diamond
Prices start from $4,041 NZDSave up to $4,858 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 Round
$4,041 NZD