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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 $2,913 NZD
HK$12,800 HKD
As of November 1, 2026
Save $3,956 NZD (58%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $6,869 NZD at MOH London · As of November 2, 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 $2,913 to $6,869, a $3,956 spread on the same certified stone. MOH London lists it at $6,869. 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: $6,869 NZD|Low: $2,890 NZD|High: $7,794 NZD|Avg: $4,491 NZD|-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 3, 2026
Retailer 8$2,913 NZD
Retailer 3$3,439 NZD
Retailer 11$3,618 NZD
Retailer 12$3,720 NZD
Retailer 7$3,825 NZD
Retailer 13$3,947 NZD
Retailer 4$4,107 NZD
Retailer 6$4,168 NZD
Retailer 2$4,303 NZD
Retailer 9$4,820 NZD
Retailer 14$4,822 NZD
Retailer 10$4,897 NZD
MOH London$6,869 NZD
Retailer 5$7,794 NZD

28 data points across 14 retailers

15 retailers$2,913 NZD to $6,869 NZD

A
Cheapest Retailer
-
$2,913 NZD
HK$12,800 HKD
B+
Retailer 2
-
$3,439 NZD
$1,934 USD
View
B+
Retailer 3
-
$3,542 NZD
$1,992 USD
View
B+
Retailer 4
-
$3,618 NZD
$2,035 USD
View
Final sale: no returns
B+
Retailer 5
-
$3,720 NZD
$2,092 USD
View
B+
Retailer 6
-
$3,825 NZD
£1,694 GBP
View
B+
Retailer 7
-
$3,947 NZD
$2,220 USD
View
Retailer 8
-
$4,051 NZD
SGD 3,079 SGD
View
Price last confirmed 7 days ago
B+
Retailer 9
-
$4,107 NZD
$2,310 USD
View
B+
Retailer 10
-
$4,168 NZD
$2,344 USD
View
B+
Retailer 11
-
$4,303 NZD
£1,905 GBP
View
B+
Retailer 12
-
$4,820 NZD
ZAR 43,791 ZAR
View
Retailer 13
-
$4,822 NZD
A$4,172 AUD
View
Price last confirmed 27 days ago
B+
Retailer 14
-
$4,897 NZD
€2,623 EUR
View
Most Expensive
B
MOH London
A64957593 · Nov 2
$6,869 NZD
£3,042 GBP
View
14 more retailers have this diamond
Prices start from $2,913 NZDSave up to $3,956 NZD

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
$2,913 NZD