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Cushion|Natural|GIA

1.00ct D SI1 Cushion Natural Diamond

EX • D/SI1 • GIA 6561091209

Certificate GIA 6561091209

Diamond specifications and retailer prices

From $3,615 SGD
$2,828 USD
As of November 1, 2026
Save $3,135 SGD (46%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $6,751 SGD at MOH London · As of November 1, 2026
View at MOH London

About this 1ct natural cushion diamond

This 1ct natural cushion sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6561091209. Listed at 14 retailers as of November 1, 2026, with prices from $3,615 to $6,751, a $3,135 spread on the same certified stone. MOH London lists it at $6,751. 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
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6561091209
Dimensions5.60 × 5.47 × 3.77 mm
L/W Ratio1.02
Top View
5.60 mm5.47 mm1.00 ctD / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6561091209
Side View
Table 64.0%CrownGirdle: THK-ETKPavilionCulet: NoneDepth 68.9%

Caratlytics Score

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

Price History

Last verified: Nov 1
Current: $6,751 SGD|Low: $3,415 SGD|High: $6,832 SGD|Avg: $4,320 SGD|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 12$3,615 SGD
Retailer 9$3,618 SGD
Retailer 10$3,679 SGD
Retailer 4$3,686 SGD
Retailer 8$3,688 SGD
Retailer 11$3,725 SGD
Retailer 2$3,937 SGD
Retailer 5$4,218 SGD
Retailer 3$4,312 SGD
Retailer 7$4,725 SGD
Retailer 6$4,961 SGD
MOH London$6,751 SGD

36 data points across 12 retailers

14 retailers$3,615 SGD to $6,751 SGD

B+
Cheapest Retailer
-
$3,615 SGD
$2,828 USD
B+
Retailer 2
-
$3,618 SGD
$2,830 USD
View
B+
Retailer 3
-
$3,679 SGD
$2,878 USD
View
B+
Retailer 4
-
$3,686 SGD
$2,883 USD
View
B+
Retailer 5
-
$3,688 SGD
$2,885 USD
View
B+
Retailer 6
-
$3,725 SGD
$2,914 USD
View
Final sale: no returns
B+
Retailer 7
-
$3,937 SGD
£2,425 GBP
View
B+
Retailer 8
-
$4,186 SGD
View
B+
Retailer 9
-
$4,218 SGD
£2,598 GBP
View
B+
Retailer 10
-
$4,220 SGD
$3,301 USD
View
Retailer 11
-
$4,312 SGD
A$5,189 AUD
View
Price last confirmed 25 days ago
B
Retailer 12
-
$4,725 SGD
€3,520 EUR
View
B
Retailer 13
-
$4,961 SGD
ZAR 62,697 ZAR
View
Most Expensive
B
MOH London
D9960B846 · Nov 1
$6,751 SGD
£4,158 GBP
View
13 more retailers have this diamond
Prices start from $3,615 SGDSave up to $3,135 SGD

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+
1.00ct Cushion
$3,615 SGD