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Cushion|Natural|GIA

1.00ct H SI1 Cushion Natural Diamond

ID • H/SI1 • GIA 1398673309

Certificate GIA 1398673309

Diamond specifications and retailer prices

From HK$12,854 HKD
As of November 1, 2026
Save HK$17,456 HKD (58%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$30,311 HKD at MOH London · As of November 1, 2026
View at MOH London

About this 1ct natural cushion diamond

This 1ct natural cushion sits in the classic one-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1398673309. Listed at 15 retailers as of November 1, 2026, with prices from HK$12,854 to HK$30,311, a HK$17,456 spread on the same certified stone. MOH London lists it at HK$30,311. 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
H
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1398673309
Dimensions5.85 × 5.77 × 3.89 mm
L/W Ratio1.01
Key to symbols
Crystal, Feather, Needle, Natural
Top View
5.85 mm5.77 mm1.00 ctH / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1398673309
Side View
Table 63.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 67.4%

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: Nov 1
Current: HK$30,311 HKD|Low: HK$12,754 HKD|High: HK$34,392 HKD|Avg: HK$19,815 HKD|-0.9%
MOH London
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
November 2, 2026
Retailer 8HK$12,854 HKD
Retailer 3HK$15,174 HKD
Retailer 11HK$15,966 HKD
Retailer 12HK$16,413 HKD
Retailer 2HK$16,876 HKD
Retailer 13HK$17,417 HKD
Retailer 4HK$18,124 HKD
Retailer 6HK$18,393 HKD
Retailer 7HK$18,828 HKD
Retailer 9HK$21,267 HKD
Retailer 14HK$21,277 HKD
Retailer 10HK$21,608 HKD
MOH LondonHK$30,311 HKD
Retailer 5HK$34,392 HKD

27 data points across 14 retailers

15 retailersHK$12,854 HKD to HK$30,311 HKD

A
Cheapest Retailer
-
HK$12,854 HKD
B+
Retailer 2
-
HK$15,174 HKD
$1,934 USD
View
B+
Retailer 3
-
HK$15,629 HKD
$1,992 USD
View
B+
Retailer 4
-
HK$15,966 HKD
$2,035 USD
View
Final sale: no returns
B+
Retailer 5
-
HK$16,413 HKD
$2,092 USD
View
B+
Retailer 6
-
HK$16,876 HKD
£1,694 GBP
View
B+
Retailer 7
-
HK$17,417 HKD
$2,220 USD
View
B+
Retailer 8
-
HK$17,876 HKD
SGD 3,079 SGD
View
B+
Retailer 9
-
HK$18,124 HKD
$2,310 USD
View
B+
Retailer 10
-
HK$18,393 HKD
$2,344 USD
View
B+
Retailer 11
-
HK$18,828 HKD
£1,890 GBP
View
B+
Retailer 12
-
HK$21,267 HKD
ZAR 43,791 ZAR
View
Retailer 13
-
HK$21,277 HKD
A$4,172 AUD
View
Price last confirmed 26 days ago
B+
Retailer 14
-
HK$21,608 HKD
€2,623 EUR
View
Most Expensive
B
MOH London
A64957593 · Nov 1
HK$30,311 HKD
£3,042 GBP
View
14 more retailers have this diamond
Prices start from HK$12,854 HKDSave up to HK$17,456 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 Cushion
HK$12,854 HKD