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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 $1,730 NZD
$975 USD
As of November 1, 2026
Save $630 NZD (27%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $2,360 NZD at Jared · As of October 30, 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 October 30, 2026, with prices from $1,730 to $2,360, a $630 spread on the same certified stone. Jared lists it at $2,360. 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: $2,360 NZD|Low: $1,730 NZD|High: $2,502 NZD|Avg: $2,047 NZD
Jared
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 19, 2026
Retailer 2$1,730 NZD
Retailer 7$1,760 NZD
Retailer 6$1,845 NZD
Retailer 5$1,868 NZD
Retailer 4$2,136 NZD
Retailer 3$2,289 NZD
Retailer 8$2,289 NZD
Jared$2,360 NZD

6 data points across 8 retailers

8 retailers$1,730 NZD to $2,360 NZD

A
Cheapest Retailer
-
$1,730 NZD
$975 USD
A
Retailer 2
-
$1,760 NZD
$992 USD
View
A
Retailer 3
-
$1,845 NZD
$1,040 USD
View
A
Retailer 4
-
$1,868 NZD
$1,053 USD
View
B+
Retailer 5
-
$2,136 NZD
$1,204 USD
View
B+
Retailer 6
-
$2,289 NZD
$1,290 USD
View
B+
Retailer 7
-
$2,289 NZD
$1,290 USD
View
Most Expensive
B+
Jared
141737523 · Oct 30
$2,360 NZD
$1,330 USD
View
7 more retailers have this diamond
Prices start from $1,730 NZDSave up to $630 NZD

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
$1,730 NZD