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Cushion|Natural|GIA

0.80ct D SI1 Cushion Natural Diamond

EX • D/SI1 • GIA 1408820623

Certificate GIA 1408820623

Diamond specifications and retailer prices

From $1,901 AUD
$1,335 USD
As of October 31, 2026
Save $2,227 AUD (54%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $4,128 AUD at MOH London · As of November 1, 2026
View at MOH London

About this 0.8ct natural cushion diamond

This 0.8ct natural cushion sits in the just-under-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 1408820623. Listed at 10 retailers as of October 31, 2026, with prices from $1,901 to $4,128, a $2,227 spread on the same certified stone. MOH London lists it at $4,128. 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

0.80
Carat
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1408820623
Dimensions5.58 × 5.01 × 3.46 mm
L/W Ratio1.11
Top View
5.58 mm5.01 mm0.80 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1408820623
Side View
Table 61.0%CrownGirdle: Sli. ThickPavilionCulet: NoneDepth 69.1%

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: $4,128 AUD|Low: $1,728 AUD|High: $4,176 AUD|Avg: $2,935 AUD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 7$1,901 AUD
Retailer 5$2,413 AUD
Retailer 8$2,513 AUD
Retailer 2$2,606 AUD
Retailer 6$3,149 AUD
Retailer 3$3,296 AUD
Retailer 4$3,594 AUD
MOH London$4,128 AUD

44 data points across 8 retailers

10 retailers$1,901 AUD to $4,128 AUD

A
Cheapest Retailer
-
$1,901 AUD
$1,335 USD
Final sale: no returns
B+
Retailer 2
-
$2,157 AUD
$1,515 USD
View
B+
Retailer 3
-
$2,413 AUD
$1,695 USD
View
B+
Retailer 4
-
$2,513 AUD
$1,765 USD
View
B+
Retailer 5
-
$2,606 AUD
£1,442 GBP
View
B+
Retailer 6
-
$2,608 AUD
$1,832 USD
View
Retailer 7
-
$3,149 AUD
View
Price last confirmed 26 days ago
B+
Retailer 8
-
$3,296 AUD
€2,205 EUR
View
B
Retailer 9
-
$3,594 AUD
ZAR 40,788 ZAR
View
Most Expensive
B
MOH London
9CD2311BC · Nov 1
$4,128 AUD
£2,283 GBP
View
9 more retailers have this diamond
Prices start from $1,901 AUDSave up to $2,227 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
0.80ct Cushion
$1,901 AUD