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Round|Natural|GIA

1.23ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 2136111141

Certificate GIA 2136111141

Diamond specifications and retailer prices

From HK$63,389 HKD
As of November 1, 2026
Save HK$24,697 HKD (28%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: HK$117,450 HKD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.23ct natural round diamond

This 1.23ct natural round sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2136111141. Listed at 13 retailers as of November 1, 2026, with a 39% 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

1.23
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle33.5°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 2136111141
Dimensions6.94 × 6.92 × 4.18 mm
L/W Ratio1.00
Culet sizeNone
Top View
6.94 mm6.92 mm1.23 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2136111141
Side View
Table 61.0%Crown 33.5°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 60.3%

Caratlytics Score

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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 1
Current: HK$117,450 HKD|Low: HK$62,197 HKD|High: HK$117,450 HKD|Avg: HK$84,750 HKD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 6HK$63,389 HKD
Retailer 4HK$66,629 HKD
Retailer 7HK$70,466 HKD
Retailer 2HK$76,538 HKD
Retailer 8HK$77,518 HKD
Retailer 3HK$84,885 HKD
Retailer 5HK$110,052 HKD
NZ JewellersHK$117,450 HKD

40 data points across 8 retailers

13 retailersHK$63,389 HKD to HK$88,086 HKD

B
Cheapest Retailer
-
HK$63,389 HKD
B
Retailer 2
-
HK$66,629 HKD
View
B
Retailer 3
-
HK$70,466 HKD
View
Final sale: no returns
B
Retailer 4
-
HK$76,342 HKD
View
B
Retailer 5
-
HK$76,538 HKD
View
B
Retailer 6
-
HK$77,518 HKD
View
B
Retailer 7
-
HK$83,865 HKD
View
B
Retailer 8
-
HK$83,865 HKD
View
B
Retailer 9
-
HK$84,885 HKD
View
B
Retailer 10
-
HK$86,611 HKD
View
B
Retailer 11
-
HK$88,086 HKD
View
Retailer 12
-
HK$110,052 HKD
View
Price under review
Most Expensive
NZ Jewellers
d468309c-1b94-4227-b591-484861551621 · Nov 5
HK$117,450 HKD
$14,971 USD
View
Price under review
12 more retailers have this diamond
Prices start from HK$63,389 HKDSave up to HK$24,697 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
1.23ct Round
HK$63,389 HKD