Round|Natural|GIA

1.21ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 6495819176

Certificate GIA 6495819176

Diamond specifications and retailer prices

From $2,396 USD
As of November 4, 2026
Save $3,032 USD (56%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $5,428 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6495819176. Listed at 15 retailers as of November 4, 2026, with prices from $2,396 to $5,428, a $3,032 spread on the same certified stone. NZ Jewellers lists it at $5,428. 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
J
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6495819176
Dimensions6.79 × 6.77 × 4.22 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
6.79 mm6.77 mm1.21 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6495819176
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.3%

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: $5,428 USD|Low: $2,096 USD|High: $5,428 USD|Avg: $3,146 USD|+4.8%
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
November 6, 2026
Retailer 6$2,260 USD
Retailer 4$2,396 USD
Retailer 2$2,450 USD
Retailer 14$2,500 USD
Retailer 13$2,596 USD
Retailer 16$2,596 USD
Retailer 3$2,716 USD
Retailer 9$2,731 USD
Retailer 7$2,884 USD
Retailer 5$2,927 USD
Retailer 15$2,996 USD
Retailer 11$3,169 USD
Retailer 10$3,217 USD
Retailer 8$4,498 USD
Retailer 12$4,549 USD
NZ Jewellers$5,428 USD

36 data points across 16 retailers

15 retailers$2,396 USD to $5,428 USD

B+
Cheapest Retailer
-
$2,396 USD
Final sale: no returns
B+
Retailer 2
-
$2,450 USD
View
B+
Retailer 3
-
$2,500 USD
View
B+
Retailer 4
-
$2,596 USD
View
Retailer 5
-
$2,596 USD
View
Price last confirmed 8 days ago
B+
Retailer 6
-
$2,716 USD
View
B+
Retailer 7
-
$2,731 USD
View
Retailer 8
-
$2,884 USD
View
Price last confirmed 25 days ago
Retailer 9
-
$2,927 USD
View
Price last confirmed 25 days ago
B+
Retailer 10
-
$2,996 USD
View
B+
Retailer 11
-
$3,169 USD
View
B
Retailer 12
-
$3,217 USD
View
Retailer 13
-
$4,498 USD
View
Price last confirmed 25 days ago
B
Retailer 14
-
$4,549 USD
View
Most Expensive
B
NZ Jewellers
6f08d3b7-6352-41ba-bfd4-e59c6e82067d · Nov 5
$5,428 USD
View
14 more retailers have this diamond
Prices start from $2,396 USDSave up to $3,032 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.

B+
1.21ct Round
$2,396 USD