CaratHunter
Plans
Radiant|Natural|GIA

1.21ct F SI1 Radiant Natural Diamond

GD • F/SI1 • GIA 1279100240

Certificate GIA 1279100240

Diamond specifications and retailer prices

From HK$39,195 HKD
As of November 6, 2026
Save HK$9,109 HKD (19%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: HK$48,304 HKD at 77 Diamonds · As of November 5, 2026
View at 77 Diamonds

About this 1.21ct natural radiant diamond

This 1.21ct natural radiant sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1279100240. Listed at 6 retailers as of November 5, 2026, with prices from HK$39,195 to HK$48,304, a HK$9,109 spread on the same certified stone. 77 Diamonds lists it at HK$48,304. 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
F
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1279100240
Dimensions5.74 × 5.31 × 4.22 mm
L/W Ratio1.08
Top View
5.74 mm5.31 mm1.21 ctF / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1279100240
Side View
Table 68.0%CrownGirdle: ThickPavilionCulet: NoneDepth 79.4%

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 6
Current: HK$48,304 HKD|Low: HK$39,195 HKD|High: HK$48,930 HKD|Avg: HK$44,162 HKD|-0.1%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 2HK$39,195 HKD
Retailer 6HK$41,530 HKD
Retailer 3HK$41,577 HKD
Retailer 5HK$42,628 HKD
Retailer 4HK$47,612 HKD
77 DiamondsHK$48,304 HKD

39 data points across 6 retailers

6 retailersHK$39,195 HKD to HK$48,304 HKD

B
Cheapest Retailer
-
HK$39,195 HKD
B
Retailer 2
-
HK$41,530 HKD
View
Retailer 3
-
HK$41,577 HKD
View
Price last confirmed 10 days ago
B
Retailer 4
-
HK$42,628 HKD
View
Retailer 5
-
HK$47,612 HKD
View
Price last confirmed 9 days ago
Most Expensive
B
77 Diamonds
RADZYSVFQSTP · Nov 5
HK$48,304 HKD
£4,853 GBP
View
5 more retailers have this diamond
Prices start from HK$39,195 HKDSave up to HK$9,109 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$39,195 HKD