CaratHunter
Plans
Cushion|Natural|GIA

1.00ct I SI1 Cushion Natural Diamond

EX • I/SI1 • GIA 1428718547

Certificate GIA 1428718547

Diamond specifications and retailer prices

From $1,847 NZD
As of November 6, 2026
Save $2,712 NZD (59%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $4,559 NZD at MOH London · As of November 4, 2026
View at MOH London

About this 1ct natural cushion diamond

This 1ct natural cushion sits in the classic one-carat band, graded I 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 1428718547. Listed at 14 retailers as of November 4, 2026, with prices from $1,847 to $4,559, a $2,712 spread on the same certified stone. MOH London lists it at $4,559. 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 (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 1428718547
Dimensions5.22 × 5.22 × 4.14 mm
L/W Ratio1.00
Key to symbols
Crystal, Feather, Cloud, Needle, Indented Natural, Natural
Top View
5.22 mm5.22 mm1.00 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 1428718547
Side View
Table 60.0%CrownGirdle: ThickPavilionCulet: NoneDepth 79.3%

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 6
Current: $4,559 NZD|Low: $1,847 NZD|High: $4,596 NZD|Avg: $2,919 NZD|-0.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 7, 2026
Retailer 8$1,847 NZD
Retailer 9$2,383 NZD
Retailer 3$2,419 NZD
Retailer 7$2,495 NZD
Retailer 5$2,576 NZD
Retailer 2$2,746 NZD
Retailer 6$3,045 NZD
Retailer 10$3,254 NZD
Retailer 4$3,460 NZD
MOH London$4,559 NZD

36 data points across 10 retailers

14 retailers$1,847 NZD to $4,559 NZD

A
Cheapest Retailer
-
$1,847 NZD
B+
Retailer 2
-
$2,313 NZD
View
Retailer 3
-
$2,334 NZD
View
Price last confirmed 59 days ago
B+
Retailer 4
-
$2,383 NZD
View
Final sale: no returns
A
Retailer 5
-
$2,419 NZD
View
Retailer 6
-
$2,495 NZD
View
Price last confirmed 9 days ago
B+
Retailer 7
-
$2,576 NZD
View
B+
Retailer 8
-
$2,688 NZD
View
B+
Retailer 9
-
$2,729 NZD
View
B+
Retailer 10
-
$2,746 NZD
View
B+
Retailer 11
-
$3,045 NZD
View
Retailer 12
-
$3,254 NZD
View
Price last confirmed 33 days ago
B+
Retailer 13
-
$3,460 NZD
View
Most Expensive
B
MOH London
B3C613D10 · Nov 4
$4,559 NZD
£1,990 GBP
View
13 more retailers have this diamond
Prices start from $1,847 NZDSave up to $2,712 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
$1,847 NZD