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Cushion|Natural|GIA

1.15ct K SI1 Cushion Natural Diamond

EX • K/SI1 • GIA 5556516747

Certificate GIA 5556516747

Diamond specifications and retailer prices

From $1,361 USD
As of November 6, 2026
Save $1,216 USD (47%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $2,577 USD at MOH London · As of November 4, 2026
View at MOH London

About this 1.15ct natural cushion diamond

This 1.15ct 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 5556516747. Listed at 4 retailers as of November 4, 2026, with prices from $1,361 to $2,577, a $1,216 spread on the same certified stone. MOH London lists it at $2,577. 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

1.15
Carat
K
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5556516747
Dimensions6.85 × 5.23 × 3.59 mm
L/W Ratio1.31
Key to symbols
Crystal, Feather
Top View
6.85 mm5.23 mm1.15 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5556516747
Side View
Table 65.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 68.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: $2,577 USD|Low: $1,216 USD|High: $2,943 USD|Avg: $2,013 USD|-11.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 4$1,361 USD
Retailer 3$1,597 USD
Retailer 2$2,043 USD
MOH London$2,577 USD

29 data points across 4 retailers

4 retailers$1,361 USD to $2,577 USD

A
Cheapest Retailer
-
$1,361 USD
Final sale: no returns
A
Retailer 2
-
$1,597 USD
View
B+
Retailer 3
-
$2,043 USD
View
Most Expensive
B
MOH London
A445A4533 · Nov 4
$2,577 USD
£2,029 GBP
View
3 more retailers have this diamond
Prices start from $1,361 USDSave up to $1,216 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
1.15ct Cushion
$1,361 USD