Cushion|Natural|GIA

1.00ct F SI1 Cushion Natural Diamond

EX • F/SI1 • GIA 6371885928

Certificate GIA 6371885928

Diamond specifications and retailer prices

From $2,559 USD
As of November 4, 2026
Save $1,401 USD (35%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $3,960 USD at Washington Diamond · As of November 6, 2026
View at Washington Diamond

About this 1ct natural cushion diamond

This 1ct natural cushion sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6371885928. Listed at 19 retailers as of November 4, 2026, with prices from $2,559 to $3,960, a $1,401 spread on the same certified stone. Washington Diamond lists it at $3,960. 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
F
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6371885928
Dimensions5.83 × 5.59 × 3.66 mm
L/W Ratio1.04
Top View
5.83 mm5.59 mm1.00 ctF / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6371885928
Side View
Table 65.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 65.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $3,267 USD|Low: $2,559 USD|High: $3,960 USD|Avg: $3,048 USD|+2.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Washington Diamond
November 7, 2026
Retailer 7$2,559 USD
Retailer 4$2,630 USD
Retailer 3$2,859 USD
Retailer 6$3,106 USD
Retailer 5$3,203 USD
Retailer 1$3,267 USD
Retailer 2$3,682 USD
Washington Diamond$3,960 USD

44 data points across 8 retailers

19 retailers$2,559 USD to $3,960 USD

B+
Cheapest Retailer
-
$2,559 USD
B+
Retailer 2
-
$2,630 USD
View
B+
Retailer 3
-
$2,672 USD
View
B+
Retailer 4
-
$2,735 USD
View
B+
Retailer 5
-
$2,790 USD
View
B+
Retailer 6
-
$2,859 USD
View
B
Retailer 7
-
$2,884 USD
View
B
Retailer 8
-
$2,900 USD
View
B+
Retailer 9
-
$3,104 USD
View
B+
Retailer 10
-
$3,106 USD
View
B
Retailer 11
-
$3,203 USD
View
B
Retailer 12
-
$3,267 USD
View
B
Retailer 13
-
$3,270 USD
View
B
Retailer 14
-
$3,270 USD
View
B
Retailer 15
-
$3,300 USD
View
B
Retailer 16
-
$3,380 USD
View
B
Retailer 17
-
$3,682 USD
View
B
Retailer 18
-
$3,704 USD
View
Most Expensive
B
Washington Diamond
1917992618 · Nov 6
$3,960 USD
View
18 more retailers have this diamond
Prices start from $2,559 USDSave up to $1,401 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.

B+
1.00ct Cushion
$2,559 USD