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Round|Natural|GIA

1.21ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 2496683844

Certificate GIA 2496683844

Diamond specifications and retailer prices

From $6,184 AUD
As of November 4, 2026
Save $6,171 AUD (50%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $13,281 AUD 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
Colour
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: $12,355 AUD|Low: $5,999 AUD|High: $12,355 AUD|Avg: $7,909 AUD
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$6,184 AUD
Retailer 10$6,295 AUD
Retailer 14$6,388 AUD
Retailer 12$6,546 AUD
Retailer 4$7,091 AUD
Retailer 6$7,091 AUD
Retailer 11$7,091 AUD
Retailer 13$7,147 AUD
Retailer 2$8,011 AUD
Retailer 3$8,182 AUD
Retailer 7$8,417 AUD
Retailer 8$8,652 AUD
Retailer 9$11,263 AUD
NZ Jewellers$12,355 AUD

41 data points across 14 retailers

17 retailers$6,184 AUD to $12,355 AUD

B+
Cheapest Retailer
-
$6,184 AUD
B+
Retailer 2
-
$6,295 AUD
View
B+
Retailer 3
-
$6,388 AUD
View
B
Retailer 4
-
$6,546 AUD
View
Final sale: no returns
Retailer 5
-
$7,091 AUD
View
Price last confirmed 9 days ago
B
Retailer 6
-
$7,091 AUD
View
B
Retailer 7
-
$7,091 AUD
View
Retailer 8
-
$7,147 AUD
View
Price last confirmed 29 days ago
Retailer 9
-
$7,941 AUD
View
Price last confirmed 54 days ago
B
Retailer 10
-
$8,011 AUD
View
B
Retailer 11
-
$8,182 AUD
View
B
Retailer 12
-
$8,417 AUD
View
B
Retailer 13
-
$8,652 AUD
View
Retailer 14
-
$9,162 AUD
View
Price last confirmed 54 days ago
B
Retailer 15
-
$11,263 AUD
View
B
Retailer 16
-
$12,355 AUD
View
Most Expensive
NZ Jewellers
b3a5a2a6-9c28-4e75-846a-69207593fe8d · Sep 15
$13,281 AUD
$9,125 USD
View
Price last confirmed 52 days ago
16 more retailers have this diamond
Prices start from $6,184 AUDSave up to $6,171 AUD

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
$6,184 AUD