Cushion|Natural|GIA

1.00ct K SI1 Cushion Natural Diamond

EX • K/SI1 • GIA 6315745344

Certificate GIA 6315745344

Diamond specifications and retailer prices

From $990 USD
As of November 4, 2026
Save $1,183 USD (54%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $2,173 USD 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6315745344. Listed at 15 retailers as of November 4, 2026, with prices from $990 to $2,173, a $1,183 spread on the same certified stone. MOH London lists it at $2,173. 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
K
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6315745344
Dimensions5.79 × 5.48 × 3.74 mm
L/W Ratio1.06
Top View
5.79 mm5.48 mm1.00 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6315745344
Side View
Table 59.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 68.3%

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 4
Current: $2,173 USD|Low: $990 USD|High: $2,541 USD|Avg: $1,415 USD|-14.3%
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
November 6, 2026
Retailer 11$990 USD
Retailer 7$1,002 USD
Retailer 15$1,032 USD
Retailer 5$1,070 USD
Retailer 13$1,078 USD
Retailer 2$1,154 USD
Retailer 4$1,207 USD
Retailer 12$1,215 USD
Retailer 14$1,216 USD
Retailer 9$1,336 USD
Retailer 10$1,452 USD
Retailer 6$1,630 USD
Retailer 8$1,654 USD
Retailer 3$1,689 USD
MOH London$2,173 USD

33 data points across 15 retailers

15 retailers$990 USD to $2,173 USD

A
Cheapest Retailer
-
$990 USD
A
Retailer 2
-
$1,002 USD
View
A
Retailer 3
-
$1,032 USD
View
A
Retailer 4
-
$1,070 USD
View
Retailer 5
-
$1,078 USD
View
Price last confirmed 8 days ago
A
Retailer 6
-
$1,154 USD
View
B+
Retailer 7
-
$1,207 USD
View
B+
Retailer 8
-
$1,215 USD
View
B+
Retailer 9
-
$1,216 USD
View
A
Retailer 10
-
$1,336 USD
View
B+
Retailer 11
-
$1,452 USD
View
B+
Retailer 12
-
$1,630 USD
View
B+
Retailer 13
-
$1,654 USD
View
B+
Retailer 14
-
$1,689 USD
View
Most Expensive
B
MOH London
9B2A01CB9 · Nov 4
$2,173 USD
£1,711 GBP
View
14 more retailers have this diamond
Prices start from $990 USDSave up to $1,183 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
$990 USD