Round|Natural|GIA

1.00ct E SI2 Round Natural Diamond

EX • E/SI2 • GIA 1236581481

Certificate GIA 1236581481

Diamond specifications and retailer prices

From HK$18,924 HKD
$2,412 USD
As of October 30, 2026
Save HK$10,166 HKD (35%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: HK$44,642 HKD at NZ Jewellers · As of September 27, 2026
View at NZ Jewellers

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1236581481. Listed at 18 retailers as of October 30, 2026, with a 54% 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

1.00
Carat
E
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle35°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1236581481
Dimensions6.45 × 6.37 × 3.91 mm
L/W Ratio1.01
Star length55%
Lower girdle85%
Top View
6.45 mm6.37 mm1.00 ctE / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1236581481
Side View
Table 58.0%Crown 35°Girdle: Sli. ThickPavilion 40.8°Culet: NoneDepth 61.4%

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 30
Current: HK$29,090 HKD|Low: HK$17,904 HKD|High: HK$43,373 HKD|Avg: HK$24,730 HKD|+15.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 3HK$18,924 HKD
Retailer 5HK$19,038 HKD
Retailer 9HK$19,638 HKD
Retailer 2HK$20,791 HKD
Retailer 8HK$22,029 HKD
Retailer 11HK$23,426 HKD
Retailer 6HK$23,608 HKD
Retailer 4HK$27,408 HKD
Retailer 1HK$29,090 HKD
Retailer 10HK$29,727 HKD
Retailer 7HK$43,254 HKD

37 data points across 11 retailers

18 retailersHK$18,924 HKD to HK$29,090 HKD

A
Cheapest Retailer
-
HK$18,924 HKD
$2,412 USD
A
Retailer 2
-
HK$19,038 HKD
$2,427 USD
View
A
Retailer 3
-
HK$20,148 HKD
A$3,951 AUD
View
Retailer 4
-
HK$20,791 HKD
$2,650 USD
View
Price last confirmed 23 days ago
A
Retailer 5
-
HK$22,029 HKD
$2,808 USD
View
A
Retailer 6
-
HK$22,207 HKD
CA$3,931 CAD
View
Retailer 7
-
HK$23,215 HKD
$2,959 USD
View
Price last confirmed 23 days ago
Retailer 8
-
HK$23,215 HKD
$2,959 USD
View
Price last confirmed 23 days ago
Retailer 9
-
HK$23,426 HKD
$2,986 USD
View
Price last confirmed 24 days ago
B+
Retailer 10
-
HK$23,608 HKD
$3,009 USD
View
Retailer 11
-
HK$24,110 HKD
$3,073 USD
View
Price last confirmed 31 days ago
Retailer 12
-
HK$24,334 HKD
$3,102 USD
View
Price last confirmed 89 days ago
Retailer 13
-
HK$26,785 HKD
$3,414 USD
View
Price last confirmed 31 days ago
B+
Retailer 14
-
HK$27,408 HKD
€3,327 EUR
View
B
Retailer 15
-
HK$29,090 HKD
£2,920 GBP
View
Retailer 16
-
HK$29,727 HKD
$3,789 USD
View
Price last confirmed 23 days ago
Retailer 17
-
HK$43,254 HKD
£4,341 GBP
View
Price last confirmed 23 days ago
Most Expensive
NZ Jewellers
ccaa283b-e8da-4ed6-a203-eb9afb6e9e14 · Sep 27
HK$44,642 HKD
$5,690 USD
View
Price last confirmed 34 days ago
17 more retailers have this diamond
Prices start from HK$18,924 HKDSave up to HK$10,166 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
1.00ct Round
HK$18,924 HKD