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Round|Natural|GIA

1.29ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 5241083858

Certificate GIA 5241083858

Diamond specifications and retailer prices

From HK$17,348 HKD
SGD 2,988 SGD
As of October 31, 2026
Save HK$15,063 HKD (46%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: HK$32,411 HKD at Helzberg Diamonds · As of November 2, 2026
View at Helzberg Diamonds

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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5241083858. Listed at 16 retailers as of October 31, 2026, with prices from HK$17,348 to HK$32,411, a HK$15,063 spread on the same certified stone. Helzberg Diamonds lists it at HK$32,411. 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle34.5°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 5241083858
Dimensions6.94 × 6.97 × 4.33 mm
L/W Ratio1.00
Culet sizeNone
Top View
6.94 mm6.97 mm1.29 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 5241083858
Side View
Table 58.0%Crown 34.5°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 62.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: HK$32,411 HKD|Low: HK$17,348 HKD|High: HK$32,411 HKD|Avg: HK$22,581 HKD
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 2, 2026
Retailer 13HK$17,348 HKD
Retailer 8HK$18,163 HKD
Retailer 5HK$18,320 HKD
Retailer 14HK$18,524 HKD
Retailer 15HK$18,830 HKD
Retailer 3HK$18,842 HKD
Retailer 2HK$20,228 HKD
Retailer 7HK$20,518 HKD
Retailer 16HK$22,180 HKD
Retailer 6HK$23,179 HKD
Retailer 10HK$23,631 HKD
Retailer 12HK$24,013 HKD
Retailer 9HK$24,195 HKD
Retailer 4HK$28,723 HKD
Retailer 11HK$30,683 HKD
Helzberg DiamondsHK$32,411 HKD

34 data points across 16 retailers

16 retailersHK$17,348 HKD to HK$32,411 HKD

A
Cheapest Retailer
-
HK$17,348 HKD
SGD 2,988 SGD
A
Retailer 2
-
HK$18,163 HKD
$2,315 USD
View
A
Retailer 3
-
HK$18,320 HKD
$2,335 USD
View
A
Retailer 4
-
HK$18,524 HKD
$2,361 USD
View
A
Retailer 5
-
HK$18,830 HKD
$2,400 USD
View
A
Retailer 6
-
HK$18,842 HKD
$2,402 USD
View
B+
Retailer 7
-
HK$20,228 HKD
£2,030 GBP
View
B+
Retailer 8
-
HK$20,518 HKD
SGD 3,534 SGD
View
B+
Retailer 9
-
HK$22,180 HKD
$2,827 USD
View
B+
Retailer 10
-
HK$23,179 HKD
$2,954 USD
View
B+
Retailer 11
-
HK$23,631 HKD
$3,012 USD
View
B+
Retailer 12
-
HK$24,013 HKD
£2,410 GBP
View
B+
Retailer 13
-
HK$24,195 HKD
€2,937 EUR
View
B
Retailer 14
-
HK$28,723 HKD
$3,661 USD
View
B
Retailer 15
-
HK$30,683 HKD
$3,911 USD
View
Most Expensive
B
Helzberg Diamonds
XZRLIKHGOJOLO · Nov 2
HK$32,411 HKD
$4,131 USD
View
15 more retailers have this diamond
Prices start from HK$17,348 HKDSave up to HK$15,063 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$17,348 HKD