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Cushion|Natural|GIA

1.00ct I SI1 Cushion Natural Diamond

EX • I/SI1 • GIA 3545886515

Certificate GIA 3545886515

Diamond specifications and retailer prices

From $908 USD
As of November 7, 2026
Save $1,237 USD (58%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $2,145 USD at MOH London · As of November 7, 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 3545886515. Listed at 22 retailers as of November 7, 2026, with prices from $908 to $2,145, a $1,237 spread on the same certified stone. MOH London lists it at $2,145. 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
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Pavilion angle38.5°
OriginNatural
Grading LabGIA
CertificateGIA 3545886515
Dimensions5.86 × 5.61 × 3.76 mm
L/W Ratio1.04
Top View
5.86 mm5.61 mm1.00 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 3545886515
Side View
Table 63.0%CrownGirdle: THK-ETKPavilion 38.5°Culet: NoneDepth 67.0%

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 7
Current: $2,145 USD|Low: $908 USD|High: $2,223 USD|Avg: $1,375 USD|-3.0%
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
November 7, 2026
Retailer 19$908 USD
Retailer 9$1,073 USD
Retailer 4$1,086 USD
Retailer 12$1,120 USD
Retailer 10$1,127 USD
Retailer 3$1,195 USD
Retailer 5$1,234 USD
Retailer 13$1,247 USD
Retailer 16$1,257 USD
Retailer 11$1,269 USD
Retailer 20$1,305 USD
Retailer 14$1,329 USD
Retailer 18$1,383 USD
Retailer 7$1,399 USD
Retailer 2$1,417 USD
Retailer 17$1,436 USD
Retailer 15$1,638 USD
Retailer 8$1,646 USD
Retailer 6$1,936 USD
MOH London$2,145 USD

23 data points across 20 retailers

22 retailers$908 USD to $2,145 USD

A
Cheapest Retailer
-
$908 USD
Retailer 2
-
$1,073 USD
View
Price last confirmed 9 days ago
A
Retailer 3
-
$1,086 USD
View
Final sale: no returns
Retailer 4
-
$1,120 USD
View
Price last confirmed 8 days ago
Retailer 5
-
$1,127 USD
View
Price last confirmed 10 days ago
A
Retailer 6
-
$1,195 USD
View
A
Retailer 7
-
$1,234 USD
View
A
Retailer 8
-
$1,247 USD
View
A
Retailer 9
-
$1,257 USD
View
Retailer 10
-
$1,269 USD
View
Price last confirmed 9 days ago
A
Retailer 11
-
$1,305 USD
View
A
Retailer 12
-
$1,329 USD
View
Retailer 13
-
$1,383 USD
View
Price last confirmed 3 days ago
A
Retailer 14
-
$1,399 USD
View
A
Retailer 15
-
$1,417 USD
View
A
Retailer 16
-
$1,436 USD
View
A
Retailer 17
-
$1,558 USD
View
Retailer 18
-
$1,634 USD
View
Price last confirmed 34 days ago
A
Retailer 19
-
$1,638 USD
View
Retailer 20
-
$1,646 USD
View
Price last confirmed 8 days ago
B+
Retailer 21
-
$1,936 USD
View
Most Expensive
B+
MOH London
12F93DD09 · Nov 7
$2,145 USD
£1,689 GBP
View
21 more retailers have this diamond
Prices start from $908 USDSave up to $1,237 USD

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
$908 USD