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1.29ct J SI2 Round Natural Diamond

EX • J/SI2 • IGI 678518039

Shape and cutting style on the report: Round brilliant

Certificate IGI 678518039

Diamond specifications and retailer prices

From HK$7,046 HKD
₹85,533 INR
As of November 2, 2026
Save HK$9,484 HKD (57%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$22,007 HKD at NZ Jewellers · As of September 26, 2026
View at NZ Jewellers

About this 1.29ct natural round diamond

This 1.29ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 678518039. Listed at 15 retailers as of November 1, 2026, with a 135% 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

1.29
Carat
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle41.3°
OriginNatural
Grading LabIGI
CertificateIGI 678518039
Dimensions6.90 × 6.86 × 4.36 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Top View
6.90 mm6.86 mm1.29 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 678518039
Side View
Table 59.0%Crown 36°Girdle: MED-STKPavilion 41.3°Culet: NoneDepth 63.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: HK$7,046 HKD|Low: HK$7,032 HKD|High: HK$16,730 HKD|Avg: HK$10,897 HKD|-2.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 2, 2026
Retailer 1HK$7,046 HKD
Retailer 5HK$8,646 HKD
Retailer 2HK$8,682 HKD
Retailer 4HK$12,579 HKD
Retailer 3HK$16,530 HKD

44 data points across 5 retailers

15 retailersHK$7,046 HKD to HK$16,530 HKD

A
Cheapest Retailer
-
HK$7,046 HKD
₹85,533 INR
Retailer 2
-
HK$8,586 HKD
$1,094 USD
View
Price last confirmed 91 days ago
A
Retailer 3
-
HK$8,646 HKD
$1,102 USD
View
A
Retailer 4
-
HK$8,682 HKD
£871 GBP
View
Retailer 5
-
HK$9,023 HKD
$1,150 USD
View
Price last confirmed 45 days ago
Retailer 6
-
HK$9,023 HKD
$1,150 USD
View
Price last confirmed 25 days ago
Retailer 7
-
HK$9,023 HKD
$1,150 USD
View
Price last confirmed 25 days ago
Retailer 8
-
HK$9,368 HKD
$1,194 USD
View
Price last confirmed 33 days ago
A
Retailer 9
-
HK$10,077 HKD
$1,284 USD
View
Retailer 10
-
HK$10,411 HKD
$1,327 USD
View
Price last confirmed 41 days ago
Retailer 11
-
HK$10,411 HKD
$1,327 USD
View
Price last confirmed 24 days ago
A
Retailer 12
-
HK$12,579 HKD
€1,527 EUR
View
A
Retailer 13
-
HK$16,530 HKD
£1,659 GBP
View
Retailer 14
-
HK$22,007 HKD
$2,805 USD
View
Price last confirmed 41 days ago
Most Expensive
NZ Jewellers
3888afb2-bcee-4462-95a8-39e6533ce625 · Sep 26
HK$22,007 HKD
$2,805 USD
View
Price last confirmed 36 days ago
14 more retailers have this diamond
Prices start from HK$7,046 HKDSave up to HK$9,484 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.

A
1.29ct Round
HK$7,046 HKD