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Radiant|Natural|GIA

1.20ct K SI1 Radiant Natural Diamond

ID • K/SI1 • GIA 3

Certificate GIA 3

Diamond specifications and retailer prices

From HK$22,705 HKD
As of November 4, 2026
Save HK$5,996 HKD (21%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: HK$28,701 HKD at Blue Nile · As of November 5, 2026
View at Blue Nile

About this 1.2ct natural radiant diamond

This 1.2ct natural radiant sits in the classic one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA. Listed at 3 retailers as of November 4, 2026, with prices from HK$22,705 to HK$28,701, a HK$5,996 spread on the same certified stone. Blue Nile lists it at HK$28,701. 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

1.20
Carat
K
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 3
Dimensions6.87 × 5.42 × 3.74 mm
L/W Ratio1.27
Top View
6.87 mm5.42 mm1.20 ctK / SI1
OriginNatural
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 3
Side View
Table 69.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 69.0%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: HK$28,701 HKD|Low: HK$22,705 HKD|High: HK$28,701 HKD|Avg: HK$24,014 HKD
Blue Nile
Retailer 2
Retailer 3
September 26, 2026
Retailer 3HK$22,705 HKD
Retailer 2HK$22,979 HKD
Blue NileHK$28,701 HKD

2 data points across 3 retailers

3 retailersHK$22,705 HKD to HK$28,701 HKD

B
Cheapest Retailer
-
HK$22,705 HKD
B
Retailer 2
-
HK$22,979 HKD
View
Most Expensive
B
Blue Nile
5631322 · Nov 5
HK$28,701 HKD
$3,662 USD
View
2 more retailers have this diamond
Prices start from HK$22,705 HKDSave up to HK$5,996 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
1.20ct Radiant
HK$22,705 HKD