CaratHunter
Plans
Marquise|Natural|GIA

1.23ct J SI1 Marquise Natural Diamond

EX • J/SI1 • GIA 6243044009

Certificate GIA 6243044009

Diamond specifications and retailer prices

From HK$25,950 HKD
As of November 6, 2026
Save HK$28,914 HKD (53%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: HK$54,864 HKD at MOH London · As of November 4, 2026
View at MOH London

About this 1.23ct natural marquise diamond

This 1.23ct natural marquise sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6243044009. Listed at 10 retailers as of November 4, 2026, with prices from HK$25,950 to HK$54,864, a HK$28,914 spread on the same certified stone. MOH London lists it at HK$54,864. 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
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6243044009
Dimensions10.73 × 5.65 × 3.58 mm
L/W Ratio1.90
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Crystal
Top View
10.73 mm5.65 mm1.23 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6243044009
Side View
Table 60.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 63.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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$54,864 HKD|Low: HK$25,950 HKD|High: HK$55,670 HKD|Avg: HK$36,144 HKD|-1.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 11HK$25,950 HKD
Retailer 3HK$29,320 HKD
Retailer 5HK$30,033 HKD
Retailer 7HK$30,950 HKD
Retailer 4HK$34,383 HKD
Retailer 9HK$34,383 HKD
Retailer 6HK$35,323 HKD
Retailer 10HK$36,946 HKD
Retailer 2HK$38,968 HKD
Retailer 8HK$50,426 HKD
MOH LondonHK$54,864 HKD

18 data points across 11 retailers

10 retailersHK$25,950 HKD to HK$54,864 HKD

B+
Cheapest Retailer
-
HK$25,950 HKD
B
Retailer 2
-
HK$29,320 HKD
View
B
Retailer 3
-
HK$30,033 HKD
View
B
Retailer 4
-
HK$30,950 HKD
View
B
Retailer 5
-
HK$34,383 HKD
View
B
Retailer 6
-
HK$34,383 HKD
View
B
Retailer 7
-
HK$35,323 HKD
View
B
Retailer 8
-
HK$38,968 HKD
View
B
Retailer 9
-
HK$50,426 HKD
View
Most Expensive
B
MOH London
81CE3D562 · Nov 4
HK$54,864 HKD
£5,512 GBP
View
9 more retailers have this diamond
Prices start from HK$25,950 HKDSave up to HK$28,914 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 Marquise
HK$25,950 HKD