Cushion|Natural|GIA

1.05ct J SI1 Cushion Natural Diamond

ID • J/SI1 • GIA 2235390877

Certificate GIA 2235390877

Diamond specifications and retailer prices

From $1,377 USD
As of November 1, 2026
Save $862 USD (38%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $2,877 USD at MOH London · As of October 26, 2026
View at MOH London

About this 1.05ct natural cushion diamond

This 1.05ct natural cushion sits in the classic one-carat band, graded J 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 2235390877. Listed at 12 retailers as of November 1, 2026, with a 63% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.05
Carat
J
Color
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2235390877
Dimensions6.08 × 5.45 × 3.74 mm
L/W Ratio1.12
Girdle conditionFaceted
Top View
6.08 mm5.45 mm1.05 ctJ / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2235390877
Side View
Table 62.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 68.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $2,877 USD|Low: $1,365 USD|High: $2,907 USD|Avg: $1,917 USD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 6$1,382 USD
Retailer 5$1,486 USD
Retailer 7$1,530 USD
Retailer 3$1,837 USD
Retailer 4$2,140 USD
Retailer 2$2,239 USD
MOH London$2,877 USD

44 data points across 7 retailers

12 retailers$1,377 USD to $2,239 USD

A
Cheapest Retailer
-
$1,377 USD
A
Retailer 2
-
$1,382 USD
View
A
Retailer 3
-
$1,422 USD
A$2,187 AUD
View
A
Retailer 4
-
$1,433 USD
View
B+
Retailer 5
-
$1,486 USD
View
B+
Retailer 6
-
$1,530 USD
View
B+
Retailer 7
-
$1,565 USD
View
B+
Retailer 8
-
$1,797 USD
View
B+
Retailer 9
-
$1,837 USD
£1,447 GBP
View
Retailer 10
-
$2,140 USD
A$3,292 AUD
View
Price last confirmed 27 days ago
B+
Retailer 11
-
$2,239 USD
€2,132 EUR
View
Most Expensive
B
MOH London
FFDE4FBC7 · Oct 26
$2,877 USD
£2,265 GBP
View
Price last confirmed 7 days ago
11 more retailers have this diamond
Prices start from $1,377 USDSave up to $862 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
1.05ct Cushion
$1,377 USD