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Radiant|Natural|GIA

1.21ct I SI1 Radiant Natural Diamond

EX • I/SI1 • GIA 1448552241

Certificate GIA 1448552241

Diamond specifications and retailer prices

From HK$38,156 HKD
$4,863 USD
As of November 1, 2026
Save HK$21,176 HKD (36%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: HK$80,768 HKD at NZ Jewellers · As of September 28, 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1448552241. Listed at 16 retailers as of October 31, 2026, with a 55% 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1448552241
Dimensions7.08 × 5.58 × 3.82 mm
L/W Ratio1.27
Top View
7.08 mm5.58 mm1.21 ctI / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 1448552241
Side View
Table 69.0%CrownGirdle: STK-ETKPavilionCulet: NoneDepth 68.4%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: HK$47,106 HKD|Low: HK$38,156 HKD|High: HK$72,004 HKD|Avg: HK$50,828 HKD|-0.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 7HK$38,156 HKD
Retailer 10HK$43,750 HKD
Retailer 8HK$44,950 HKD
Retailer 4HK$46,329 HKD
Retailer 1HK$47,106 HKD
Retailer 9HK$47,440 HKD
Retailer 6HK$52,775 HKD
Retailer 2HK$53,259 HKD
Retailer 5HK$59,332 HKD
Retailer 3HK$71,147 HKD

33 data points across 10 retailers

16 retailersHK$38,156 HKD to HK$59,332 HKD

B
Cheapest Retailer
-
HK$38,156 HKD
$4,863 USD
B
Retailer 2
-
HK$43,224 HKD
$5,509 USD
View
Retailer 3
-
HK$43,750 HKD
$5,576 USD
View
Price last confirmed 34 days ago
B
Retailer 4
-
HK$44,950 HKD
$5,729 USD
View
B
Retailer 5
-
HK$46,329 HKD
£4,649 GBP
View
B
Retailer 6
-
HK$47,106 HKD
£4,727 GBP
View
Retailer 7
-
HK$47,440 HKD
A$9,302 AUD
View
Price last confirmed 34 days ago
B
Retailer 8
-
HK$48,175 HKD
$6,140 USD
View
B
Retailer 9
-
HK$48,175 HKD
$6,140 USD
View
B
Retailer 10
-
HK$49,744 HKD
$6,340 USD
View
Retailer 11
-
HK$50,482 HKD
$6,434 USD
View
Price last confirmed 34 days ago
B
Retailer 12
-
HK$52,775 HKD
€6,406 EUR
View
Retailer 13
-
HK$53,259 HKD
$6,788 USD
View
Price last confirmed 10 days ago
B
Retailer 14
-
HK$59,332 HKD
ZAR 122,164 ZAR
View
Retailer 15
-
HK$71,147 HKD
£7,140 GBP
View
Price under review
Most Expensive
NZ Jewellers
c912433b-c587-4a8d-bdf2-f60c249c3acd · Sep 28
HK$80,768 HKD
$10,294 USD
View
Price under review
15 more retailers have this diamond
Prices start from HK$38,156 HKDSave up to HK$21,176 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$38,156 HKD