CaratHunter
Plans
Oval|Natural|GIA

1.23ct J SI1 Oval Natural Diamond

EX • J/SI1 • GIA 6551369856

Certificate GIA 6551369856

Diamond specifications and retailer prices

From HK$16,302 HKD
As of November 6, 2026
Save HK$12,140 HKD (43%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: HK$34,038 HKD at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1.23ct natural oval diamond

This 1.23ct natural oval 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 6551369856. Listed at 12 retailers as of November 4, 2026, with a 74% 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
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 6551369856
Dimensions8.60 × 5.91 × 3.71 mm
L/W Ratio1.46
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud, Needle
Top View
8.60 mm5.91 mm1.23 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 6551369856
Side View
Table 59.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 62.8%

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$17,681 HKD|Low: HK$16,286 HKD|High: HK$28,873 HKD|Avg: HK$20,364 HKD|+3.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 7HK$16,286 HKD
Retailer 4HK$16,302 HKD
Retailer 1HK$17,681 HKD
Retailer 2HK$19,868 HKD
Retailer 6HK$20,134 HKD
Retailer 5HK$22,235 HKD
Retailer 3HK$28,442 HKD

43 data points across 7 retailers

12 retailersHK$16,302 HKD to HK$28,442 HKD

Retailer 1
-
HK$16,286 HKD
Price last confirmed 36 days ago
B+
Retailer 2
-
HK$16,302 HKD
View
Retailer 3
-
HK$17,031 HKD
View
Price last confirmed 38 days ago
B+
Retailer 4
-
HK$17,681 HKD
View
Retailer 5
-
HK$18,786 HKD
View
Price last confirmed 66 days ago
Retailer 6
-
HK$18,786 HKD
View
Price last confirmed 38 days ago
B+
Retailer 7
-
HK$19,868 HKD
View
Retailer 8
-
HK$20,134 HKD
View
Price last confirmed 34 days ago
B+
Retailer 9
-
HK$22,235 HKD
View
B
Retailer 10
-
HK$28,442 HKD
View
Retailer 11
-
HK$34,038 HKD
View
Price last confirmed 69 days ago
Most Expensive
NZ Jewellers
965272af-a8f6-45d1-8c3b-2f97d582e26d · Sep 30
HK$34,038 HKD
$4,343 USD
View
Price last confirmed 37 days ago
11 more retailers have this diamond
Prices start from HK$16,302 HKDSave up to HK$12,140 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 Oval
HK$16,302 HKD