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Cushion|Natural|GIA

0.80ct H SI1 Cushion Natural Diamond

EX • H/SI1 • GIA 1378723039

Certificate GIA 1378723039

Diamond specifications and retailer prices

From $1,391 AUD
$975 USD
As of November 1, 2026
Save $507 AUD (27%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $1,898 AUD at Jared · As of November 2, 2026
View at Jared

About this 0.8ct natural cushion diamond

This 0.8ct natural cushion sits in the just-under-one-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1378723039. Listed at 8 retailers as of November 1, 2026, with prices from $1,391 to $1,898, a $507 spread on the same certified stone. Jared lists it at $1,898. 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1378723039
Dimensions5.33 × 5.07 × 3.44 mm
L/W Ratio1.05
Culet sizeNone
Top View
5.33 mm5.07 mm0.80 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1378723039
Side View
Table 59.0%CrownGirdle: ThickPavilionCulet: NoneDepth 67.8%

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: Nov 1
Current: $1,898 AUD|Low: $1,391 AUD|High: $2,012 AUD|Avg: $1,646 AUD
Jared
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 19, 2026
Retailer 2$1,391 AUD
Retailer 7$1,415 AUD
Retailer 6$1,484 AUD
Retailer 5$1,503 AUD
Retailer 4$1,718 AUD
Retailer 3$1,841 AUD
Retailer 8$1,841 AUD
Jared$1,898 AUD

6 data points across 8 retailers

8 retailers$1,391 AUD to $1,898 AUD

A
Cheapest Retailer
-
$1,391 AUD
$975 USD
A
Retailer 2
-
$1,415 AUD
$992 USD
View
A
Retailer 3
-
$1,484 AUD
$1,040 USD
View
A
Retailer 4
-
$1,503 AUD
$1,053 USD
View
B+
Retailer 5
-
$1,718 AUD
$1,204 USD
View
B+
Retailer 6
-
$1,841 AUD
$1,290 USD
View
B+
Retailer 7
-
$1,841 AUD
$1,290 USD
View
Most Expensive
B+
Jared
141737523 · Nov 2
$1,898 AUD
$1,330 USD
View
7 more retailers have this diamond
Prices start from $1,391 AUDSave up to $507 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
$1,391 AUD