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 $1,312 SGD
As of November 6, 2026
Save $1,927 SGD (59%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $3,239 SGD 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 $1,312 to $3,239, a $1,927 spread on the same certified stone. MOH London lists it at $3,239. 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: $3,239 SGD|Low: $1,312 SGD|High: $3,265 SGD|Avg: $2,056 SGD|-0.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 9$1,312 SGD
Retailer 10$1,693 SGD
Retailer 2$1,719 SGD
Retailer 8$1,772 SGD
Retailer 5$1,830 SGD
Retailer 3$1,910 SGD
Retailer 6$1,944 SGD
Retailer 7$2,163 SGD
Retailer 11$2,312 SGD
Retailer 4$2,458 SGD
MOH London$3,239 SGD

35 data points across 11 retailers

14 retailers$1,312 SGD to $3,239 SGD

A
Cheapest Retailer
-
$1,312 SGD
B+
Retailer 2
-
$1,643 SGD
View
Retailer 3
-
$1,658 SGD
View
Price last confirmed 59 days ago
B+
Retailer 4
-
$1,693 SGD
View
Final sale: no returns
A
Retailer 5
-
$1,719 SGD
View
Retailer 6
-
$1,772 SGD
View
Price last confirmed 9 days ago
B+
Retailer 7
-
$1,830 SGD
View
B+
Retailer 8
-
$1,910 SGD
View
B+
Retailer 9
-
$1,939 SGD
View
B+
Retailer 10
-
$1,944 SGD
View
B+
Retailer 11
-
$2,163 SGD
View
Retailer 12
-
$2,312 SGD
View
Price last confirmed 33 days ago
B+
Retailer 13
-
$2,458 SGD
View
Most Expensive
B
MOH London
B3C613D10 · Nov 4
$3,239 SGD
£1,990 GBP
View
13 more retailers have this diamond
Prices start from $1,312 SGDSave up to $1,927 SGD

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
$1,312 SGD