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Round|Natural|GIA

1.21ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 2416493551

Certificate GIA 2416493551

Diamond specifications and retailer prices

From $2,885 USD
As of November 4, 2026
Save $3,544 USD (55%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $6,429 USD 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 2416493551. Listed at 19 retailers as of November 4, 2026, with prices from $2,885 to $6,429, a $3,544 spread on the same certified stone. NZ Jewellers lists it at $6,429. 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
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2416493551
Dimensions6.80 × 6.76 × 4.24 mm
L/W Ratio1.01
Top View
6.80 mm6.76 mm1.21 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2416493551
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.7%

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: $6,429 USD|Low: $2,769 USD|High: $6,487 USD|Avg: $3,877 USD
NZ Jewellers
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 5, 2026
Retailer 14$2,885 USD
Retailer 18$2,908 USD
Retailer 5$2,967 USD
Retailer 6$3,085 USD
Retailer 15$3,140 USD
Retailer 9$3,343 USD
Retailer 10$3,343 USD
Retailer 3$3,355 USD
Retailer 17$3,471 USD
Retailer 7$3,740 USD
Retailer 16$3,740 USD
Retailer 12$3,795 USD
Retailer 2$3,820 USD
Retailer 8$3,870 USD
Retailer 11$4,035 USD
Retailer 4$4,179 USD
Retailer 13$6,154 USD
NZ Jewellers$6,429 USD

39 data points across 18 retailers

19 retailers$2,885 USD to $6,429 USD

A
Cheapest Retailer
-
$2,885 USD
A
Retailer 2
-
$2,908 USD
View
B+
Retailer 3
-
$2,967 USD
View
B+
Retailer 4
-
$3,075 USD
View
B+
Retailer 5
-
$3,085 USD
View
Final sale: no returns
Retailer 6
-
$3,140 USD
View
Price last confirmed 17 days ago
Retailer 7
-
$3,343 USD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$3,343 USD
View
B+
Retailer 9
-
$3,355 USD
View
B+
Retailer 10
-
$3,471 USD
View
B
Retailer 11
-
$3,740 USD
View
B
Retailer 12
-
$3,740 USD
View
B
Retailer 13
-
$3,761 USD
View
B+
Retailer 14
-
$3,795 USD
View
B
Retailer 15
-
$3,820 USD
View
B
Retailer 16
-
$3,870 USD
View
B+
Retailer 17
-
$4,035 USD
View
B
Retailer 18
-
$6,154 USD
View
Most Expensive
B
NZ Jewellers
016afa2a-a770-4c4a-8e1c-d63ca2ad3294 · Nov 5
$6,429 USD
View
18 more retailers have this diamond
Prices start from $2,885 USDSave up to $3,544 USD

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
$2,885 USD