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Cushion|Natural|GIA

1.10ct K SI1 Cushion Natural Diamond

EX • K/SI1 • GIA 5156925640

Certificate GIA 5156925640

Diamond specifications and retailer prices

From $3,262 AUD
As of November 6, 2026
Save $3,914 AUD (55%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $7,175 AUD at MOH London · As of November 4, 2026
View at MOH London

About this 1.1ct natural cushion diamond

This 1.1ct 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 5156925640. Listed at 13 retailers as of November 4, 2026, with prices from $3,262 to $7,175, a $3,914 spread on the same certified stone. MOH London lists it at $7,175. 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

1.10
Carat
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 5156925640
Dimensions6.63 × 5.54 × 3.55 mm
L/W Ratio1.20
Top View
6.63 mm5.54 mm1.10 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 5156925640
Side View
Table 63.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 64.2%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: $7,175 AUD|Low: $3,262 AUD|High: $7,283 AUD|Avg: $4,451 AUD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 8$3,262 AUD
Retailer 5$3,282 AUD
Retailer 6$3,682 AUD
Retailer 7$4,043 AUD
Retailer 3$4,321 AUD
Retailer 2$4,803 AUD
Retailer 4$5,012 AUD
MOH London$7,175 AUD

45 data points across 8 retailers

13 retailers$3,262 AUD to $7,175 AUD

B+
Cheapest Retailer
-
$3,262 AUD
Retailer 2
-
$3,282 AUD
View
Price last confirmed 9 days ago
B+
Retailer 3
-
$3,345 AUD
View
B+
Retailer 4
-
$3,362 AUD
View
B
Retailer 5
-
$3,509 AUD
View
B
Retailer 6
-
$3,589 AUD
View
B
Retailer 7
-
$3,682 AUD
View
B
Retailer 8
-
$4,034 AUD
View
B
Retailer 9
-
$4,043 AUD
View
B
Retailer 10
-
$4,321 AUD
View
B
Retailer 11
-
$4,803 AUD
View
B
Retailer 12
-
$5,012 AUD
View
Most Expensive
B
MOH London
239D0522F · Nov 4
$7,175 AUD
£3,882 GBP
View
12 more retailers have this diamond
Prices start from $3,262 AUDSave up to $3,914 AUD

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+
1.10ct Cushion
$3,262 AUD