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Radiant|Natural|GIA

1.21ct E SI1 Radiant Natural Diamond

EX • E/SI1 • GIA 5231852725

Certificate GIA 5231852725

Diamond specifications and retailer prices

From HK$29,304 HKD
As of November 6, 2026
Save HK$36,875 HKD (56%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: HK$66,179 HKD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.21ct natural radiant diamond

This 1.21ct natural radiant sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5231852725. Listed at 25 retailers as of November 5, 2026, with prices from HK$29,304 to HK$66,179, a HK$36,875 spread on the same certified stone. NZ Jewellers lists it at HK$66,179. 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle55.91°
OriginNatural
Grading LabGIA
CertificateGIA 5231852725
Dimensions7.16 × 5.34 × 3.65 mm
L/W Ratio1.34
Top View
7.16 mm5.34 mm1.21 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5231852725
Side View
Table 67.0%CrownGirdle: ThickPavilion 55.91°Culet: NoneDepth 68.4%

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 6
Current: HK$66,179 HKD|Low: HK$28,646 HKD|High: HK$66,179 HKD|Avg: HK$42,759 HKD
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
Retailer 15
Retailer 16
November 7, 2026
Retailer 6HK$33,090 HKD
Retailer 12HK$35,848 HKD
Retailer 14HK$35,848 HKD
Retailer 15HK$35,848 HKD
Retailer 8HK$36,452 HKD
Retailer 16HK$38,591 HKD
Retailer 2HK$38,960 HKD
Retailer 7HK$39,885 HKD
Retailer 3HK$41,068 HKD
Retailer 4HK$41,068 HKD
Retailer 13HK$41,366 HKD
Retailer 5HK$42,400 HKD
Retailer 9HK$44,524 HKD
Retailer 10HK$48,278 HKD
Retailer 11HK$63,021 HKD
NZ JewellersHK$66,179 HKD

42 data points across 16 retailers

25 retailersHK$29,304 HKD to HK$66,179 HKD

B+
Cheapest Retailer
-
HK$29,304 HKD
B+
Retailer 2
-
HK$31,248 HKD
View
B+
Retailer 3
-
HK$31,263 HKD
View
B+
Retailer 4
-
HK$31,624 HKD
View
B+
Retailer 5
-
HK$32,698 HKD
View
B+
Retailer 6
-
HK$33,090 HKD
View
Final sale: no returns
B+
Retailer 7
-
HK$33,364 HKD
View
B+
Retailer 8
-
HK$33,897 HKD
View
B+
Retailer 9
-
HK$35,848 HKD
View
Retailer 10
-
HK$35,848 HKD
View
Price last confirmed 9 days ago
B+
Retailer 11
-
HK$35,848 HKD
View
B+
Retailer 12
-
HK$36,452 HKD
View
B
Retailer 13
-
HK$38,591 HKD
View
B+
Retailer 14
-
HK$38,960 HKD
View
Retailer 15
-
HK$39,885 HKD
View
Price last confirmed 29 days ago
B
Retailer 16
-
HK$40,786 HKD
View
B
Retailer 17
-
HK$41,068 HKD
View
B
Retailer 18
-
HK$41,068 HKD
View
B
Retailer 19
-
HK$41,366 HKD
View
B
Retailer 20
-
HK$42,400 HKD
View
Retailer 21
-
HK$43,686 HKD
View
Price last confirmed 15 days ago
B
Retailer 22
-
HK$44,524 HKD
View
B
Retailer 23
-
HK$48,278 HKD
View
B
Retailer 24
-
HK$63,021 HKD
View
Most Expensive
B
NZ Jewellers
af50deb8-0e02-43d3-920c-832d22555d90 · Nov 5
HK$66,179 HKD
$8,444 USD
View
24 more retailers have this diamond
Prices start from HK$29,304 HKDSave up to HK$36,875 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.

B+
1.21ct Radiant
HK$29,304 HKD