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Radiant|Natural|GIA

5.12ct F SI1 Radiant Natural Diamond

VG • F/SI1 • GIA 5241071918

Certificate GIA 5241071918

Diamond specifications and retailer prices

From HK$825,739 HKD
$105,242 USD
As of November 2, 2026
Save HK$91,988 HKD (10%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: HK$917,727 HKD at William & Sons Jewelers · As of November 2, 2026
View at William & Sons Jewelers

About this 5.12ct natural radiant diamond

This 5.12ct natural radiant sits in the over five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 5241071918. Listed at 5 retailers as of November 2, 2026, with a relatively tight 11% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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

5.12
Carat
F
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5241071918
Dimensions12.23 × 8.68 × 5.80 mm
L/W Ratio1.41
Top View
12.23 mm8.68 mm5.12 ctF / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5241071918
Side View
Table 67.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 66.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: HK$851,009 HKD|Low: HK$825,582 HKD|High: HK$953,552 HKD|Avg: HK$890,602 HKD|-2.2%
Retailer 1
Retailer 2
Retailer 3
William & Sons Jewelers
November 2, 2026
Retailer 3HK$825,739 HKD
Retailer 1HK$851,009 HKD
Retailer 2HK$875,633 HKD
William & Sons JewelersHK$917,727 HKD

18 data points across 4 retailers

5 retailersHK$825,739 HKD to HK$917,727 HKD

A
Cheapest Retailer
-
HK$825,739 HKD
$105,242 USD
A
Retailer 2
-
HK$851,009 HKD
₹10,329,778 INR
View
B+
Retailer 3
-
HK$875,633 HKD
$111,601 USD
View
B+
Retailer 4
-
HK$905,135 HKD
A$177,479 AUD
View
Most Expensive
B+
William & Sons Jewelers
cert_5241071918 · Nov 2
HK$917,727 HKD
$116,966 USD
View
Final sale: no returns
4 more retailers have this diamond
Prices start from HK$825,739 HKDSave up to HK$91,988 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.

A
5.12ct Radiant
HK$825,739 HKD