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Round|Natural|GIA

1.00ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 240

Certificate GIA 240

Diamond specifications and retailer prices

From HK$10,316 HKD
As of November 5, 2026
Save HK$14,851 HKD (59%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: HK$27,160 HKD at NZ Jewellers · As of September 25, 2026
View at NZ Jewellers

About this 1ct natural round diamond

This 1ct natural round sits in the classic one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA. Listed at 11 retailers as of November 5, 2026, with a 144% 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
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 240
Dimensions6.46 × 6.50 × 3.91 mm
L/W Ratio1.01
Top View
6.46 mm6.50 mm1.00 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 240
Side View
Table 59.0%CrownGirdle: THN-MEDPavilionCulet: NoneDepth 60.2%

Caratlytics Score

How it works →
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 5
Current: HK$25,167 HKD|Low: HK$10,316 HKD|High: HK$27,160 HKD|Avg: HK$14,132 HKD|-7.3%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 24, 2026
Retailer 2HK$10,316 HKD
Retailer 4HK$10,316 HKD
Retailer 5HK$10,544 HKD
Retailer 3HK$10,795 HKD
Retailer 6HK$11,909 HKD
Retailer 7HK$13,054 HKD
Retailer 8HK$13,376 HKD
Retailer 9HK$15,675 HKD
NZ JewellersHK$25,167 HKD

18 data points across 9 retailers

11 retailersHK$10,316 HKD to HK$25,167 HKD

A
Cheapest Retailer
-
HK$10,316 HKD
Retailer 2
-
HK$10,316 HKD
View
Price last confirmed 8 days ago
A
Retailer 3
-
HK$10,544 HKD
View
A
Retailer 4
-
HK$10,795 HKD
View
Retailer 5
-
HK$11,132 HKD
View
Price last confirmed 43 days ago
A
Retailer 6
-
HK$11,909 HKD
View
Retailer 7
-
HK$12,850 HKD
View
Price last confirmed 45 days ago
Retailer 8
-
HK$13,054 HKD
View
Price last confirmed 30 days ago
Retailer 9
-
HK$13,376 HKD
View
Price last confirmed 30 days ago
B
Retailer 10
-
HK$25,167 HKD
View
Most Expensive
NZ Jewellers
cc9b158d-30ec-4b7a-8bf3-4d1f069758aa · Sep 25
HK$27,160 HKD
$3,462 USD
View
Price last confirmed 42 days ago
10 more retailers have this diamond
Prices start from HK$10,316 HKDSave up to HK$14,851 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$10,316 HKD