Round|Natural|GIA

1.00ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 2566189059

Certificate GIA 2566189059

Diamond specifications and retailer prices

From HK$19,183 HKD
$2,445 USD
As of October 30, 2026
Save HK$30,245 HKD (61%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: HK$49,428 HKD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2566189059. Listed at 22 retailers as of October 30, 2026, with prices from HK$19,183 to HK$49,428, a HK$30,245 spread on the same certified stone. NZ Jewellers lists it at HK$49,428. 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

1.00
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle33°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 2566189059
Dimensions6.41 × 6.44 × 3.96 mm
L/W Ratio1.00
Culet sizeNone
Top View
6.41 mm6.44 mm1.00 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2566189059
Side View
Table 59.0%Crown 33°Girdle: THN-STKPavilion 41.6°Culet: NoneDepth 61.6%

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$49,428 HKD|Low: HK$15,345 HKD|High: HK$49,428 HKD|Avg: HK$22,439 HKD
NZ Jewellers
Retailer 2
Retailer 3
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Retailer 5
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Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
Retailer 24
Retailer 25
Retailer 26
Retailer 27
November 1, 2026
Retailer 10HK$15,345 HKD
Retailer 16HK$16,225 HKD
Retailer 12HK$16,667 HKD
Retailer 8HK$16,868 HKD
Retailer 19HK$18,143 HKD
Retailer 3HK$19,183 HKD
Retailer 14HK$19,748 HKD
Retailer 5HK$19,810 HKD
Retailer 9HK$20,901 HKD
Retailer 18HK$20,911 HKD
Retailer 4HK$21,066 HKD
Retailer 11HK$21,124 HKD
Retailer 25HK$21,419 HKD
Retailer 27HK$21,419 HKD
Retailer 26HK$22,243 HKD
Retailer 13HK$22,748 HKD
Retailer 6HK$24,290 HKD
Retailer 7HK$24,714 HKD
Retailer 22HK$25,128 HKD
Retailer 20HK$25,859 HKD
Retailer 15HK$27,203 HKD
Retailer 24HK$27,452 HKD
Retailer 2HK$27,556 HKD
Retailer 23HK$29,060 HKD
Retailer 17HK$29,861 HKD
Retailer 21HK$39,537 HKD
NZ JewellersHK$49,428 HKD

26 data points across 27 retailers

22 retailersHK$19,183 HKD to HK$49,428 HKD

Retailer 1
-
HK$16,667 HKD
$2,124 USD
Price last confirmed 18 days ago
Retailer 2
-
HK$16,868 HKD
$2,150 USD
View
Price last confirmed 18 days ago
Retailer 3
-
HK$18,143 HKD
SGD 3,125 SGD
View
Price last confirmed 18 days ago
B+
Retailer 4
-
HK$19,183 HKD
$2,445 USD
View
B+
Retailer 5
-
HK$19,653 HKD
$2,505 USD
View
B+
Retailer 6
-
HK$19,810 HKD
$2,525 USD
View
B+
Retailer 7
-
HK$21,066 HKD
$2,685 USD
View
Retailer 8
-
HK$21,124 HKD
£2,120 GBP
View
Price last confirmed 16 days ago
B+
Retailer 9
-
HK$21,419 HKD
$2,730 USD
View
B+
Retailer 10
-
HK$21,419 HKD
$2,730 USD
View
B+
Retailer 11
-
HK$22,243 HKD
$2,835 USD
View
B+
Retailer 12
-
HK$22,748 HKD
£2,283 GBP
View
B
Retailer 13
-
HK$24,290 HKD
$3,096 USD
View
B
Retailer 14
-
HK$24,706 HKD
$3,149 USD
View
B
Retailer 15
-
HK$24,714 HKD
$3,150 USD
View
B
Retailer 16
-
HK$25,128 HKD
£2,522 GBP
View
Retailer 17
-
HK$27,203 HKD
$3,467 USD
View
Price last confirmed 18 days ago
B
Retailer 18
-
HK$27,556 HKD
€3,345 EUR
View
B
Retailer 19
-
HK$29,060 HKD
ZAR 59,837 ZAR
View
Retailer 20
-
HK$29,861 HKD
$3,806 USD
View
Price last confirmed 17 days ago
B
Retailer 21
-
HK$39,537 HKD
£3,968 GBP
View
Most Expensive
B
NZ Jewellers
6443b987-1d38-4d76-b20b-560ff4338924 · Oct 30
HK$49,428 HKD
$6,300 USD
View
21 more retailers have this diamond
Prices start from HK$19,183 HKDSave up to HK$30,245 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+
1.00ct Round
HK$19,183 HKD