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Cushion|Natural|GIA

1.09ct K SI1 Cushion Natural Diamond

VG • K/SI1 • GIA 2106631020

Certificate GIA 2106631020

Diamond specifications and retailer prices

From $2,921 AUD
As of November 6, 2026
Save $1,689 AUD (37%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $4,610 AUD at MOH London · As of November 2, 2026
View at MOH London

About this 1.09ct natural cushion diamond

This 1.09ct natural cushion sits in the classic one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 2106631020. Listed at 4 retailers as of November 2, 2026, with prices from $2,921 to $4,610, a $1,689 spread on the same certified stone. MOH London lists it at $4,610. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.09
Carat
K
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryGood
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 2106631020
Dimensions6.42 × 5.43 × 3.81 mm
L/W Ratio1.18
Girdle conditionFaceted
Key to symbols
Crystal, Feather
Top View
6.42 mm5.43 mm1.09 ctK / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceStrong
CertificateGIA 2106631020
Side View
Table 63.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 70.2%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $4,610 AUD|Low: $2,358 AUD|High: $4,667 AUD|Avg: $3,593 AUD|-0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 4$2,460 AUD
Retailer 3$2,921 AUD
Retailer 2$3,346 AUD
MOH London$4,610 AUD
Retailer 5$4,667 AUD

40 data points across 5 retailers

4 retailers$2,921 AUD to $4,610 AUD

Retailer 1
-
$2,460 AUD
Price last confirmed 16 days ago
B
Retailer 2
-
$2,921 AUD
View
B
Retailer 3
-
$3,346 AUD
View
Most Expensive
C
MOH London
7093200C7 · Nov 2
$4,610 AUD
£2,494 GBP
View
3 more retailers have this diamond
Prices start from $2,921 AUDSave up to $1,689 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
1.09ct Cushion
$2,921 AUD