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Cushion|Natural|GIA

1.00ct D SI2 Cushion Natural Diamond

EX • D/SI2 • GIA 1186397700

Certificate GIA 1186397700

Diamond specifications and retailer prices

From $1,666 AUD
$1,170 USD
As of October 31, 2026
Save $2,102 AUD (56%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $3,768 AUD at MOH London · As of October 29, 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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1186397700. Listed at 18 retailers as of October 29, 2026, with prices from $1,666 to $3,768, a $2,102 spread on the same certified stone. MOH London lists it at $3,768. 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1186397700
Dimensions5.87 × 5.72 × 3.69 mm
L/W Ratio1.03
Top View
5.87 mm5.72 mm1.00 ctD / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 1186397700
Side View
Table 63.0%CrownGirdle: Very ThickPavilionCulet: NDepth 64.6%

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 31
Current: $3,768 AUD|Low: $1,388 AUD|High: $8,270 AUD|Avg: $2,267 AUD|+0.4%
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
October 31, 2026
Retailer 12$1,666 AUD
Retailer 15$1,680 AUD
Retailer 13$1,788 AUD
Retailer 7$1,795 AUD
Retailer 9$1,811 AUD
Retailer 4$1,842 AUD
Retailer 17$1,938 AUD
Retailer 3$2,037 AUD
Retailer 5$2,058 AUD
Retailer 8$2,097 AUD
Retailer 18$2,141 AUD
Retailer 10$2,246 AUD
Retailer 11$2,386 AUD
Retailer 16$2,416 AUD
Retailer 6$2,642 AUD
Retailer 2$2,921 AUD
Retailer 14$3,054 AUD
MOH London$3,768 AUD

45 data points across 18 retailers

18 retailers$1,666 AUD to $3,768 AUD

A
Cheapest Retailer
-
$1,666 AUD
$1,170 USD
A
Retailer 2
-
$1,680 AUD
$1,180 USD
View
A
Retailer 3
-
$1,788 AUD
$1,256 USD
View
Final sale: no returns
A
Retailer 4
-
$1,795 AUD
$1,261 USD
View
A
Retailer 5
-
$1,811 AUD
$1,272 USD
View
A
Retailer 6
-
$1,842 AUD
$1,294 USD
View
A
Retailer 7
-
$1,938 AUD
$1,361 USD
View
A
Retailer 8
-
$2,037 AUD
$1,431 USD
View
A
Retailer 9
-
$2,058 AUD
$1,445 USD
View
A
Retailer 10
-
$2,097 AUD
$1,473 USD
View
Retailer 11
-
$2,141 AUD
£1,184 GBP
View
Price last confirmed 31 days ago
A
Retailer 12
-
$2,246 AUD
$1,578 USD
View
A
Retailer 13
-
$2,386 AUD
£1,320 GBP
View
B+
Retailer 14
-
$2,416 AUD
$1,697 USD
View
B+
Retailer 15
-
$2,642 AUD
CA$2,577 CAD
View
B+
Retailer 16
-
$2,921 AUD
€1,954 EUR
View
B+
Retailer 17
-
$3,054 AUD
$2,145 USD
View
Most Expensive
B+
MOH London
ED67DCC65 · Oct 29
$3,768 AUD
£2,084 GBP
View
17 more retailers have this diamond
Prices start from $1,666 AUDSave up to $2,102 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
$1,666 AUD