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Round|Natural|GIA

1.21ct E SI2 Round Natural Diamond

EX • E/SI2 • GIA 2556316311

Certificate GIA 2556316311

Diamond specifications and retailer prices

From $3,253 AUD
As of November 5, 2026
Save $3,376 AUD (51%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $6,629 AUD at Wholesale Diamonds Direct · As of November 3, 2026
View at Wholesale Diamonds Direct

About this 1.21ct natural round diamond

This 1.21ct natural round sits in the classic one-carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2556316311. Listed at 12 retailers as of November 3, 2026, with prices from $3,253 to $6,629, a $3,376 spread on the same certified stone. Wholesale Diamonds Direct lists it at $6,629. 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
E
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2556316311
Dimensions6.78 × 6.80 × 4.24 mm
L/W Ratio1.00
Culet sizeNone
Top View
6.78 mm6.80 mm1.21 ctE / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556316311
Side View
Table 56.0%Crown 36°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.4%

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 5
Current: $3,253 AUD|Low: $3,236 AUD|High: $6,989 AUD|Avg: $4,757 AUD|-4.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Wholesale Diamonds Direct
November 5, 2026
Retailer 1$3,253 AUD
Retailer 6$3,673 AUD
Retailer 7$3,994 AUD
Retailer 4$4,263 AUD
Retailer 2$4,424 AUD
Retailer 8$4,471 AUD
Retailer 9$4,741 AUD
Retailer 10$4,880 AUD
Retailer 5$4,897 AUD
Retailer 3$5,043 AUD
Wholesale Diamonds Direct$6,629 AUD

40 data points across 11 retailers

12 retailers$3,253 AUD to $6,629 AUD

A
Cheapest Retailer
-
$3,253 AUD
A
Retailer 2
-
$3,673 AUD
View
A
Retailer 3
-
$3,994 AUD
View
A
Retailer 4
-
$4,263 AUD
View
A
Retailer 5
-
$4,424 AUD
View
A
Retailer 6
-
$4,471 AUD
View
A
Retailer 7
-
$4,741 AUD
View
A
Retailer 8
-
$4,880 AUD
View
A
Retailer 9
-
$4,897 AUD
View
A
Retailer 10
-
$5,043 AUD
View
B+
Retailer 11
-
$5,077 AUD
View
Most Expensive
B+
Wholesale Diamonds Direct
524836331 · Nov 3
$6,629 AUD
$4,640 USD
View
11 more retailers have this diamond
Prices start from $3,253 AUDSave up to $3,376 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.

A
1.21ct Round
$3,253 AUD