Oval|Natural|GIA

1.20ct J SI1 Oval Natural Diamond

ID • J/SI1 • GIA 1559636147

Certificate GIA 1559636147

Diamond specifications and retailer prices

From HK$23,184 HKD
$2,955 USD
As of October 30, 2026
Save HK$25,022 HKD (52%) vs most expensive(unlock to see where)
29 retailers carry this diamond
Most expensive: HK$50,212 HKD at NZ Jewellers · As of September 29, 2026
View at NZ Jewellers

About this 1.2ct natural oval diamond

This 1.2ct 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 1559636147. Listed at 29 retailers as of October 30, 2026, with a 108% 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

1.20
Carat
J
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1559636147
Dimensions8.59 × 5.92 × 3.54 mm
L/W Ratio1.45
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Cloud, Twinning Wisp, Cavity, Needle
Top View
8.59 mm5.92 mm1.20 ctJ / SI1
OriginNatural
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1559636147
Side View
Table 58.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 59.8%

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: Oct 30
Current: HK$28,115 HKD|Low: HK$26,110 HKD|High: HK$48,784 HKD|Avg: HK$33,043 HKD|-1.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 8HK$26,110 HKD
Retailer 9HK$26,549 HKD
Retailer 10HK$27,350 HKD
Retailer 1HK$28,115 HKD
Retailer 5HK$30,124 HKD
Retailer 11HK$30,386 HKD
Retailer 3HK$30,904 HKD
Retailer 7HK$33,743 HKD
Retailer 6HK$35,428 HKD
Retailer 2HK$42,047 HKD
Retailer 4HK$48,206 HKD

37 data points across 11 retailers

29 retailersHK$23,184 HKD to HK$48,206 HKD

B+
Cheapest Retailer
-
HK$23,184 HKD
$2,955 USD
B
Retailer 2
-
HK$24,526 HKD
$3,126 USD
View
B
Retailer 3
-
HK$25,224 HKD
$3,215 USD
View
Retailer 4
-
HK$26,110 HKD
$3,328 USD
View
Price last confirmed 68 days ago
Retailer 5
-
HK$26,110 HKD
$3,328 USD
View
Price last confirmed 41 days ago
Retailer 6
-
HK$26,110 HKD
$3,328 USD
View
Price last confirmed 31 days ago
B
Retailer 7
-
HK$26,110 HKD
$3,328 USD
View
B
Retailer 8
-
HK$26,218 HKD
$3,342 USD
View
B
Retailer 9
-
HK$26,549 HKD
CA$4,700 CAD
View
Retailer 10
-
HK$27,115 HKD
$3,456 USD
View
Price last confirmed 32 days ago
B
Retailer 11
-
HK$27,350 HKD
$3,486 USD
View
B
Retailer 12
-
HK$28,115 HKD
£2,822 GBP
View
B
Retailer 13
-
HK$29,578 HKD
$3,770 USD
View
B
Retailer 14
-
HK$29,578 HKD
$3,770 USD
View
B
Retailer 15
-
HK$30,124 HKD
£3,023 GBP
View
Retailer 16
-
HK$30,127 HKD
$3,840 USD
View
Price last confirmed 54 days ago
Retailer 17
-
HK$30,127 HKD
$3,840 USD
View
Price last confirmed 41 days ago
Retailer 18
-
HK$30,127 HKD
$3,840 USD
View
Price last confirmed 33 days ago
B
Retailer 19
-
HK$30,386 HKD
$3,873 USD
View
B
Retailer 20
-
HK$30,598 HKD
$3,900 USD
View
Retailer 21
-
HK$30,904 HKD
A$6,060 AUD
View
Price last confirmed 28 days ago
B
Retailer 22
-
HK$31,288 HKD
$3,988 USD
View
B
Retailer 23
-
HK$33,743 HKD
€4,096 EUR
View
B
Retailer 24
-
HK$35,428 HKD
ZAR 72,949 ZAR
View
B
Retailer 25
-
HK$42,047 HKD
$5,359 USD
View
B
Retailer 26
-
HK$48,206 HKD
£4,838 GBP
View
Retailer 27
-
HK$50,212 HKD
$6,400 USD
View
Price last confirmed 51 days ago
Retailer 28
-
HK$50,212 HKD
$6,400 USD
View
Price last confirmed 42 days ago
Most Expensive
NZ Jewellers
edaa7ba8-bce8-4bff-81fa-16e451f7ab09 · Sep 29
HK$50,212 HKD
$6,400 USD
View
Price last confirmed 33 days ago
28 more retailers have this diamond
Prices start from HK$23,184 HKDSave up to HK$25,022 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+
1.20ct Oval
HK$23,184 HKD