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Cushion|Natural|GIA

1.30ct F SI1 Cushion Natural Diamond

EX • F/SI1 • GIA 1558712621

Certificate GIA 1558712621

Diamond specifications and retailer prices

From $2,880 AUD
As of November 6, 2026
Save $3,253 AUD (53%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $6,133 AUD at MOH London · As of November 7, 2026
View at MOH London

About this 1.3ct natural cushion diamond

This 1.3ct natural cushion sits in the one-and-a-quarter to one-and-a-half 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 1558712621. Listed at 23 retailers as of November 6, 2026, with prices from $2,880 to $6,133, a $3,253 spread on the same certified stone. MOH London lists it at $6,133. 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

1.30
Carat
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle37°
Pavilion angle36.1°
OriginNatural
Grading LabGIA
CertificateGIA 1558712621
Dimensions6.25 × 6.10 × 4.15 mm
L/W Ratio1.02
Girdle conditionFaceted
Top View
6.25 mm6.10 mm1.30 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 1558712621
Side View
Table 64.0%Crown 37°Girdle: MED-THKPavilion 36.1°Culet: NoneDepth 68.0%

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 6
Current: $6,133 AUD|Low: $2,663 AUD|High: $6,445 AUD|Avg: $3,888 AUD|-4.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
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Retailer 8
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Retailer 10
Retailer 11
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Retailer 21
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Retailer 23
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Retailer 25
November 7, 2026
Retailer 14$2,663 AUD
Retailer 10$2,746 AUD
Retailer 24$2,880 AUD
Retailer 22$2,943 AUD
Retailer 23$2,982 AUD
Retailer 21$3,209 AUD
Retailer 17$3,307 AUD
Retailer 13$3,436 AUD
Retailer 11$3,443 AUD
Retailer 12$3,464 AUD
Retailer 2$3,490 AUD
Retailer 25$3,508 AUD
Retailer 4$3,682 AUD
Retailer 7$3,682 AUD
Retailer 20$3,723 AUD
Retailer 16$3,748 AUD
Retailer 5$3,813 AUD
Retailer 19$3,831 AUD
Retailer 15$3,944 AUD
Retailer 18$4,069 AUD
Retailer 9$4,161 AUD
Retailer 3$4,299 AUD
Retailer 6$4,371 AUD
Retailer 8$4,422 AUD
MOH London$6,133 AUD

21 data points across 25 retailers

23 retailers$2,880 AUD to $6,133 AUD

Retailer 1
-
$2,663 AUD
Price last confirmed 18 days ago
Retailer 2
-
$2,746 AUD
View
Price last confirmed 18 days ago
A
Retailer 3
-
$2,880 AUD
View
A
Retailer 4
-
$2,943 AUD
View
Final sale: no returns
A
Retailer 5
-
$2,982 AUD
View
A
Retailer 6
-
$3,209 AUD
View
Retailer 7
-
$3,307 AUD
View
Price last confirmed 23 days ago
A
Retailer 8
-
$3,436 AUD
View
A
Retailer 9
-
$3,490 AUD
View
A
Retailer 10
-
$3,508 AUD
View
A
Retailer 11
-
$3,659 AUD
View
A
Retailer 12
-
$3,682 AUD
View
A
Retailer 13
-
$3,682 AUD
View
A
Retailer 14
-
$3,723 AUD
View
Retailer 15
-
$3,748 AUD
View
Price last confirmed 17 days ago
A
Retailer 16
-
$3,813 AUD
View
Retailer 17
-
$3,831 AUD
View
Retailer 18
-
$3,944 AUD
View
Price last confirmed 17 days ago
Retailer 19
-
$4,069 AUD
View
Price last confirmed 37 days ago
A
Retailer 20
-
$4,299 AUD
View
A
Retailer 21
-
$4,371 AUD
View
A
Retailer 22
-
$4,422 AUD
View
Most Expensive
B+
MOH London
0FE1DCF9E · Nov 7
$6,133 AUD
£3,318 GBP
View
22 more retailers have this diamond
Prices start from $2,880 AUDSave up to $3,253 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
1.30ct Cushion
$2,880 AUD