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Cushion|Natural|GIA

1.00ct E SI1 Cushion Natural Diamond

GD • E/SI1 • GIA 6551672027

Certificate GIA 6551672027

Diamond specifications and retailer prices

From $2,496 AUD
HK$13,700 HKD
As of October 30, 2026
Save $4,094 AUD (62%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $6,590 AUD at Queensmith · As of October 28, 2026
View at Queensmith

About this 1ct natural cushion diamond

This 1ct natural cushion sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6551672027. Listed at 20 retailers as of October 28, 2026, with prices from $2,496 to $6,590, a $4,094 spread on the same certified stone. Queensmith lists it at $6,590. 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

1.00
Carat
E
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551672027
Dimensions6.92 × 5.18 × 3.51 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Crystal, Cavity, Needle, Indented Natural, Natural
Top View
6.92 mm5.18 mm1.00 ctE / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551672027
Side View
Table 65.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 67.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $6,590 AUD|Low: $2,496 AUD|High: $6,689 AUD|Avg: $3,784 AUD|+1.2%
Queensmith
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
Retailer 16
Retailer 17
October 30, 2026
Retailer 17$2,496 AUD
Retailer 2$2,683 AUD
Retailer 9$3,008 AUD
Retailer 5$3,102 AUD
Retailer 3$3,140 AUD
Retailer 6$3,165 AUD
Retailer 15$3,239 AUD
Retailer 10$3,289 AUD
Retailer 8$3,451 AUD
Retailer 7$3,511 AUD
Retailer 16$3,561 AUD
Retailer 4$3,669 AUD
Retailer 11$3,690 AUD
Retailer 14$4,093 AUD
Retailer 13$4,191 AUD
Retailer 12$5,921 AUD
Queensmith$6,590 AUD

23 data points across 17 retailers

20 retailers$2,496 AUD to $6,590 AUD

A
Cheapest Retailer
-
$2,496 AUD
HK$13,700 HKD
A
Retailer 2
-
$2,683 AUD
₹179,474 INR
View
B+
Retailer 3
-
$3,008 AUD
SGD 2,855 SGD
View
B+
Retailer 4
-
$3,102 AUD
$2,179 USD
View
Final sale: no returns
B+
Retailer 5
-
$3,140 AUD
$2,206 USD
View
B+
Retailer 6
-
$3,165 AUD
$2,223 USD
View
B+
Retailer 7
-
$3,239 AUD
$2,275 USD
View
B+
Retailer 8
-
$3,239 AUD
$2,275 USD
View
B+
Retailer 9
-
$3,289 AUD
£1,819 GBP
View
Retailer 10
-
$3,451 AUD
$2,424 USD
View
Price last confirmed 15 days ago
B+
Retailer 11
-
$3,511 AUD
SGD 3,333 SGD
View
B+
Retailer 12
-
$3,561 AUD
$2,501 USD
View
B+
Retailer 13
-
$3,635 AUD
View
B+
Retailer 14
-
$3,669 AUD
$2,577 USD
View
B+
Retailer 15
-
$3,690 AUD
£2,041 GBP
View
B+
Retailer 16
-
$4,093 AUD
ZAR 46,452 ZAR
View
B
Retailer 17
-
$4,191 AUD
€2,804 EUR
View
Retailer 18
-
$4,249 AUD
View
Price last confirmed 23 days ago
B
Retailer 19
-
$5,921 AUD
£3,275 GBP
View
Most Expensive
B
Queensmith
6551672027 · Oct 28
$6,590 AUD
£3,645 GBP
View
19 more retailers have this diamond
Prices start from $2,496 AUDSave up to $4,094 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.

A
1.00ct Cushion
$2,496 AUD