Radiant|Natural|GIA

1.21ct J SI1 Radiant Natural Diamond

VG • J/SI1 • GIA 2245114745

Certificate GIA 2245114745

Diamond specifications and retailer prices

From HK$15,306 HKD
As of November 4, 2026
Save HK$12,375 HKD (45%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: HK$27,682 HKD at Helzberg Diamonds · As of November 6, 2026
View at Helzberg Diamonds

About this 1.21ct natural radiant diamond

This 1.21ct natural radiant sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2245114745. Listed at 11 retailers as of November 4, 2026, with prices from HK$15,306 to HK$27,682, a HK$12,375 spread on the same certified stone. Helzberg Diamonds lists it at HK$27,682. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.21
Carat
J
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2245114745
Dimensions7.09 × 5.43 × 3.74 mm
L/W Ratio1.31
Top View
7.09 mm5.43 mm1.21 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2245114745
Side View
Table 70.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 68.9%

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 4
Current: HK$27,682 HKD|Low: HK$15,306 HKD|High: HK$27,682 HKD|Avg: HK$18,867 HKD
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 7, 2026
Retailer 9HK$15,306 HKD
Retailer 10HK$15,440 HKD
Retailer 8HK$15,487 HKD
Retailer 3HK$16,811 HKD
Retailer 2HK$16,882 HKD
Retailer 5HK$18,371 HKD
Retailer 11HK$19,625 HKD
Retailer 4HK$21,694 HKD
Retailer 7HK$23,544 HKD
Retailer 6HK$25,409 HKD
Helzberg DiamondsHK$27,682 HKD

8 data points across 11 retailers

11 retailersHK$15,306 HKD to HK$27,682 HKD

B+
Cheapest Retailer
-
HK$15,306 HKD
B+
Retailer 2
-
HK$15,440 HKD
View
B+
Retailer 3
-
HK$15,487 HKD
View
B+
Retailer 4
-
HK$16,811 HKD
View
B+
Retailer 5
-
HK$16,882 HKD
View
B+
Retailer 6
-
HK$18,371 HKD
View
B
Retailer 7
-
HK$19,625 HKD
View
B
Retailer 8
-
HK$21,694 HKD
View
B
Retailer 9
-
HK$23,544 HKD
View
B
Retailer 10
-
HK$25,409 HKD
View
Most Expensive
B
Helzberg Diamonds
XZRIIKLHHKNKL · Nov 6
HK$27,682 HKD
$3,532 USD
View
10 more retailers have this diamond
Prices start from HK$15,306 HKDSave up to HK$12,375 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$15,306 HKD