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Round|Natural|GIA

1.21ct F SI2 Round Natural Diamond

EX • F/SI2 • GIA 5136012626

Certificate GIA 5136012626

Diamond specifications and retailer prices

From HK$59,172 HKD
As of November 4, 2026
Save HK$24,343 HKD (29%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: HK$118,206 HKD at Diamond Quarter · As of November 5, 2026
View at Diamond Quarter

About this 1.21ct natural round diamond

This 1.21ct natural round sits in the classic one-carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5136012626. Listed at 19 retailers as of November 4, 2026, with a 41% 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
F
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5136012626
Dimensions6.92 × 6.91 × 4.20 mm
L/W Ratio1.00
Top View
6.92 mm6.91 mm1.21 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5136012626
Side View
Table 57.0%CrownGirdle: THN-MEDPavilionCulet: NoneDepth 60.7%

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 4
Current: HK$68,914 HKD|Low: HK$53,804 HKD|High: HK$129,129 HKD|Avg: HK$78,595 HKD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 6, 2026
Retailer 13HK$59,172 HKD
Retailer 4HK$60,630 HKD
Retailer 2HK$62,558 HKD
Retailer 10HK$64,565 HKD
Retailer 3HK$65,191 HKD
Retailer 15HK$66,814 HKD
Retailer 1HK$68,914 HKD
Retailer 9HK$72,041 HKD
Retailer 7HK$72,378 HKD
Retailer 5HK$73,491 HKD
Retailer 6HK$79,001 HKD
Retailer 8HK$79,001 HKD
Retailer 18HK$79,518 HKD
Retailer 14HK$81,587 HKD
Retailer 11HK$82,528 HKD
Retailer 17HK$83,515 HKD
Retailer 12HK$104,057 HKD
Retailer 16HK$111,354 HKD

37 data points across 18 retailers

19 retailersHK$59,172 HKD to HK$83,515 HKD

B
Cheapest Retailer
-
HK$59,172 HKD
B
Retailer 2
-
HK$60,630 HKD
View
B
Retailer 3
-
HK$62,558 HKD
View
B
Retailer 4
-
HK$64,565 HKD
View
Final sale: no returns
B
Retailer 5
-
HK$65,191 HKD
View
Retailer 6
-
HK$66,814 HKD
View
Price last confirmed 9 days ago
Retailer 7
-
HK$68,914 HKD
View
Retailer 8
-
HK$72,041 HKD
View
Price last confirmed 16 days ago
B
Retailer 9
-
HK$72,378 HKD
View
B
Retailer 10
-
HK$73,491 HKD
View
B
Retailer 11
-
HK$79,001 HKD
View
B
Retailer 12
-
HK$79,001 HKD
View
B
Retailer 13
-
HK$79,518 HKD
View
B
Retailer 14
-
HK$81,587 HKD
View
B
Retailer 15
-
HK$82,528 HKD
View
B
Retailer 16
-
HK$83,515 HKD
View
Retailer 17
-
HK$104,057 HKD
View
Price under review
Retailer 18
-
HK$111,354 HKD
View
Price under review
Most Expensive
Diamond Quarter
1.21SI2F5126EA3DN · Nov 5
HK$118,206 HKD
£11,876 GBP
View
Price under review
18 more retailers have this diamond
Prices start from HK$59,172 HKDSave up to HK$24,343 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 Round
HK$59,172 HKD