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Round|Natural|GIA

1.21ct E SI2 Round Natural Diamond

EX • E/SI2 • GIA 2557157855

Certificate GIA 2557157855

Diamond specifications and retailer prices

From HK$27,013 HKD
$3,443 USD
As of October 30, 2026
Save HK$27,241 HKD (50%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: HK$59,031 HKD 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
Colour
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: HK$34,449 HKD|Low: HK$27,013 HKD|High: HK$54,623 HKD|Avg: HK$36,830 HKD|+2.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 6HK$27,013 HKD
Retailer 3HK$29,995 HKD
Retailer 1HK$34,449 HKD
Retailer 9HK$34,678 HKD
Retailer 10HK$34,678 HKD
Retailer 2HK$35,776 HKD
Retailer 4HK$36,264 HKD
Retailer 7HK$38,326 HKD
Retailer 8HK$40,322 HKD
Retailer 5HK$54,254 HKD

32 data points across 10 retailers

14 retailersHK$27,013 HKD to HK$54,254 HKD

A
Cheapest Retailer
-
HK$27,013 HKD
$3,443 USD
B+
Retailer 2
-
HK$29,995 HKD
£3,010 GBP
View
Retailer 3
-
HK$30,700 HKD
$3,913 USD
View
Price last confirmed 22 days ago
Retailer 4
-
HK$30,700 HKD
$3,913 USD
View
Price last confirmed 23 days ago
Retailer 5
-
HK$30,700 HKD
$3,913 USD
View
Price last confirmed 32 days ago
B+
Retailer 6
-
HK$34,449 HKD
£3,457 GBP
View
B+
Retailer 7
-
HK$34,678 HKD
$4,420 USD
View
B+
Retailer 8
-
HK$34,678 HKD
$4,420 USD
View
Retailer 9
-
HK$35,423 HKD
$4,515 USD
View
Price last confirmed 22 days ago
B+
Retailer 10
-
HK$35,776 HKD
$4,560 USD
View
B+
Retailer 11
-
HK$36,264 HKD
€4,402 EUR
View
Retailer 12
-
HK$38,326 HKD
$4,885 USD
View
Price last confirmed 8 days ago
B
Retailer 13
-
HK$54,254 HKD
£5,445 GBP
View
Most Expensive
NZ Jewellers
c50702df-7f2f-4dee-9107-310b0574e00e · Sep 28
HK$59,031 HKD
$7,524 USD
View
Price last confirmed 33 days ago
13 more retailers have this diamond
Prices start from HK$27,013 HKDSave up to HK$27,241 HKD

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
HK$27,013 HKD