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Round|Natural|GIA

1.21ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 6452098443

Certificate GIA 6452098443

Diamond specifications and retailer prices

From $8,289 NZD
As of November 4, 2026
Save $7,665 NZD (48%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $18,162 NZD at NZ Jewellers · As of November 5, 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6452098443. Listed at 19 retailers as of November 4, 2026, with a 92% 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
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 6452098443
Dimensions6.81 × 6.76 × 4.26 mm
L/W Ratio1.01
Top View
6.81 mm6.76 mm1.21 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6452098443
Side View
Table 57.0%Crown 35.5°Girdle: ThickPavilion 41.2°Culet: NoneDepth 62.7%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $18,162 NZD|Low: $7,567 NZD|High: $18,162 NZD|Avg: $11,379 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 7, 2026
Retailer 8$8,289 NZD
Retailer 9$9,081 NZD
Retailer 11$9,225 NZD
Retailer 4$9,837 NZD
Retailer 10$9,837 NZD
Retailer 2$10,418 NZD
Retailer 5$10,726 NZD
Retailer 12$10,726 NZD
Retailer 3$11,350 NZD
Retailer 6$11,531 NZD
Retailer 7$15,954 NZD
NZ Jewellers$18,162 NZD

43 data points across 12 retailers

19 retailers$8,289 NZD to $15,954 NZD

B
Cheapest Retailer
-
$8,289 NZD
B
Retailer 2
-
$8,339 NZD
View
B
Retailer 3
-
$8,579 NZD
View
B
Retailer 4
-
$9,081 NZD
View
Final sale: no returns
B
Retailer 5
-
$9,225 NZD
View
B
Retailer 6
-
$9,837 NZD
View
Retailer 7
-
$9,837 NZD
View
Price last confirmed 9 days ago
B
Retailer 8
-
$9,837 NZD
View
B
Retailer 9
-
$10,418 NZD
View
B
Retailer 10
-
$10,726 NZD
View
B
Retailer 11
-
$10,726 NZD
View
B
Retailer 12
-
$10,986 NZD
View
B
Retailer 13
-
$10,986 NZD
View
B
Retailer 14
-
$11,350 NZD
View
B
Retailer 15
-
$11,365 NZD
View
B
Retailer 16
-
$11,531 NZD
View
Retailer 17
-
$11,974 NZD
View
Price last confirmed 15 days ago
B
Retailer 18
-
$15,954 NZD
View
Most Expensive
NZ Jewellers
2dbbae6e-fc61-4a8c-82e7-79b5176a6a54 · Nov 5
$18,162 NZD
$10,068 USD
View
Price under review
18 more retailers have this diamond
Prices start from $8,289 NZDSave up to $7,665 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
1.21ct Round
$8,289 NZD