Round|Natural|GIA

1.21ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 2496683844

Certificate GIA 2496683844

Diamond specifications and retailer prices

From $4,249 USD
As of November 4, 2026
Save $4,240 USD (50%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $9,125 USD at NZ Jewellers · As of September 15, 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2496683844. Listed at 17 retailers as of November 4, 2026, with a 100% 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
H
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2496683844
Dimensions6.78 × 6.74 × 4.22 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
6.78 mm6.74 mm1.21 ctH / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2496683844
Side View
Table 58.0%Crown 36°Girdle: Slightly ThickPavilion 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: $8,489 USD|Low: $4,122 USD|High: $8,489 USD|Avg: $5,443 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
November 6, 2026
Retailer 5$4,249 USD
Retailer 10$4,325 USD
Retailer 14$4,389 USD
Retailer 12$4,498 USD
Retailer 4$4,872 USD
Retailer 6$4,872 USD
Retailer 11$4,872 USD
Retailer 13$4,911 USD
Retailer 9$5,496 USD
Retailer 3$5,622 USD
Retailer 2$5,783 USD
Retailer 7$5,945 USD
Retailer 8$7,739 USD
NZ Jewellers$8,489 USD

42 data points across 14 retailers

17 retailers$4,249 USD to $8,489 USD

B+
Cheapest Retailer
-
$4,249 USD
B+
Retailer 2
-
$4,325 USD
View
B+
Retailer 3
-
$4,389 USD
View
B
Retailer 4
-
$4,498 USD
View
Final sale: no returns
Retailer 5
-
$4,872 USD
View
Price last confirmed 8 days ago
B
Retailer 6
-
$4,872 USD
View
B
Retailer 7
-
$4,872 USD
View
Retailer 8
-
$4,911 USD
View
Price last confirmed 28 days ago
Retailer 9
-
$5,456 USD
View
Price last confirmed 53 days ago
B
Retailer 10
-
$5,496 USD
View
B
Retailer 11
-
$5,622 USD
View
B
Retailer 12
-
$5,783 USD
View
B
Retailer 13
-
$5,945 USD
View
Retailer 14
-
$6,295 USD
View
Price last confirmed 53 days ago
B
Retailer 15
-
$7,739 USD
View
B
Retailer 16
-
$8,489 USD
View
Most Expensive
NZ Jewellers
b3a5a2a6-9c28-4e75-846a-69207593fe8d · Sep 15
$9,125 USD
View
Price last confirmed 52 days ago
16 more retailers have this diamond
Prices start from $4,249 USDSave up to $4,240 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
$4,249 USD