Round|Natural|GIA

1.21ct E SI2 Round Natural Diamond

EX • E/SI2 • GIA 2557157855

Certificate GIA 2557157855

Diamond specifications and retailer prices

From $4,810 CAD
$3,443 USD
As of October 30, 2026
Save $4,850 CAD (50%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $10,510 CAD at NZ Jewellers · As of September 28, 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 E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2557157855. Listed at 14 retailers as of October 29, 2026, with a 101% 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
E
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2557157855
Dimensions6.80 × 6.82 × 4.22 mm
L/W Ratio1.00
Star length50%
Top View
6.80 mm6.82 mm1.21 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2557157855
Side View
Table 58.0%Crown 36°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.9%

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: Oct 30
Current: $5,341 CAD|Low: $4,682 CAD|High: $9,725 CAD|Avg: $6,372 CAD|+0.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 3$4,682 CAD
Retailer 7$4,810 CAD
Retailer 1$5,341 CAD
Retailer 5$6,133 CAD
Retailer 10$6,174 CAD
Retailer 11$6,174 CAD
Retailer 2$6,370 CAD
Retailer 4$6,457 CAD
Retailer 8$6,824 CAD
Retailer 9$7,179 CAD
Retailer 6$9,660 CAD

31 data points across 11 retailers

14 retailers$4,810 CAD to $9,660 CAD

A
Cheapest Retailer
-
$4,810 CAD
$3,443 USD
B+
Retailer 2
-
$5,341 CAD
£3,010 GBP
View
Retailer 3
-
$5,466 CAD
$3,913 USD
View
Price last confirmed 22 days ago
Retailer 4
-
$5,466 CAD
$3,913 USD
View
Price last confirmed 23 days ago
Retailer 5
-
$5,466 CAD
$3,913 USD
View
Price last confirmed 31 days ago
B+
Retailer 6
-
$6,133 CAD
£3,457 GBP
View
B+
Retailer 7
-
$6,174 CAD
$4,420 USD
View
B+
Retailer 8
-
$6,174 CAD
$4,420 USD
View
Retailer 9
-
$6,307 CAD
$4,515 USD
View
Price last confirmed 21 days ago
B+
Retailer 10
-
$6,370 CAD
$4,560 USD
View
B+
Retailer 11
-
$6,457 CAD
€4,402 EUR
View
Retailer 12
-
$6,824 CAD
$4,885 USD
View
Price last confirmed 8 days ago
B
Retailer 13
-
$9,660 CAD
£5,445 GBP
View
Most Expensive
NZ Jewellers
c50702df-7f2f-4dee-9107-310b0574e00e · Sep 28
$10,510 CAD
$7,524 USD
View
Price last confirmed 33 days ago
13 more retailers have this diamond
Prices start from $4,810 CADSave up to $4,850 CAD

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
$4,810 CAD