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Cushion|Natural|GIA

1.05ct F SI1 Cushion Natural Diamond

EX • F/SI1 • GIA 6551000742

Certificate GIA 6551000742

Diamond specifications and retailer prices

From $1,964 SGD
HK$12,000 HKD
As of November 2, 2026
Save $2,374 SGD (55%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $4,338 SGD at MOH London · As of November 1, 2026
View at MOH London

About this 1.05ct natural cushion diamond

This 1.05ct natural cushion sits in the classic one-carat band, graded F 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 6551000742. Listed at 20 retailers as of November 1, 2026, with prices from $1,964 to $4,338, a $2,374 spread on the same certified stone. MOH London lists it at $4,338. 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

1.05
Carat
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551000742
Dimensions5.96 × 5.92 × 3.88 mm
L/W Ratio1.01
Top View
5.96 mm5.92 mm1.05 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551000742
Side View
Table 65.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 65.5%

Caratlytics Score

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

Price History

Last verified: Nov 2
Current: $4,338 SGD|Low: $1,932 SGD|High: $4,536 SGD|Avg: $2,812 SGD|-4.4%
MOH London
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
Retailer 18
November 2, 2026
Retailer 14$1,964 SGD
Retailer 17$2,105 SGD
Retailer 3$2,164 SGD
Retailer 6$2,200 SGD
Retailer 12$2,301 SGD
Retailer 2$2,304 SGD
Retailer 9$2,331 SGD
Retailer 11$2,399 SGD
Retailer 13$2,404 SGD
Retailer 8$2,485 SGD
Retailer 16$2,524 SGD
Retailer 7$2,760 SGD
Retailer 18$2,762 SGD
Retailer 5$3,095 SGD
Retailer 4$3,439 SGD
Retailer 10$4,047 SGD
Retailer 15$4,118 SGD
MOH London$4,338 SGD

22 data points across 18 retailers

20 retailers$1,964 SGD to $4,338 SGD

A
Cheapest Retailer
-
$1,964 SGD
HK$12,000 HKD
A
Retailer 2
-
$2,105 SGD
$1,646 USD
View
Final sale: no returns
A
Retailer 3
-
$2,164 SGD
$1,692 USD
View
A
Retailer 4
-
$2,200 SGD
$1,720 USD
View
A
Retailer 5
-
$2,301 SGD
$1,799 USD
View
A
Retailer 6
-
$2,304 SGD
€1,716 EUR
View
A
Retailer 7
-
$2,331 SGD
$1,822 USD
View
A
Retailer 8
-
$2,399 SGD
A$2,886 AUD
View
A
Retailer 9
-
$2,404 SGD
$1,880 USD
View
A
Retailer 10
-
$2,485 SGD
$1,943 USD
View
A
Retailer 11
-
$2,524 SGD
$1,973 USD
View
A
Retailer 12
-
$2,760 SGD
$2,158 USD
View
A
Retailer 13
-
$2,762 SGD
£1,700 GBP
View
B+
Retailer 14
-
$2,833 SGD
A$3,408 AUD
View
B+
Retailer 15
-
$3,095 SGD
ZAR 39,095 ZAR
View
Retailer 16
-
$3,180 SGD
A$3,825 AUD
View
Price last confirmed 28 days ago
B+
Retailer 17
-
$3,439 SGD
€2,561 EUR
View
Retailer 18
-
$4,047 SGD
$3,165 USD
View
Price last confirmed 10 days ago
B+
Retailer 19
-
$4,118 SGD
$3,220 USD
View
Most Expensive
B+
MOH London
66B4FE87B · Nov 1
$4,338 SGD
£2,671 GBP
View
19 more retailers have this diamond
Prices start from $1,964 SGDSave up to $2,374 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.

A
1.05ct Cushion
$1,964 SGD