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Round|Natural|GIA

0.80ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 2556718136

Certificate GIA 2556718136

Diamond specifications and retailer prices

From $1,767 AUD
$1,243 USD
As of October 28, 2026
Save $3,390 AUD (66%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: $5,157 AUD at NZ Jewellers · As of October 20, 2026
View at NZ Jewellers

About this 0.8ct natural round diamond

This 0.8ct natural round sits in the just-under-one-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2556718136. Listed at 27 retailers as of October 27, 2026, with a 192% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 2556718136
Dimensions5.97 × 5.95 × 3.68 mm
L/W Ratio1.00
Culet sizeNone
Top View
5.97 mm5.95 mm0.80 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556718136
Side View
Table 59.0%Crown 34°Girdle: THN-STKPavilion 41.6°Culet: NoneDepth 61.8%

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: Oct 28
Current: $5,157 AUD|Low: $1,621 AUD|High: $5,157 AUD|Avg: $2,696 AUD
NZ Jewellers
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 29, 2026
Retailer 7$1,767 AUD
Retailer 8$1,775 AUD
Retailer 5$1,784 AUD
Retailer 16$1,915 AUD
Retailer 18$1,915 AUD
Retailer 17$2,003 AUD
Retailer 9$2,069 AUD
Retailer 3$2,211 AUD
Retailer 6$2,318 AUD
Retailer 2$2,338 AUD
Retailer 4$2,528 AUD
Retailer 11$2,682 AUD
Retailer 10$2,759 AUD
Retailer 13$2,928 AUD
Retailer 15$3,120 AUD
Retailer 12$3,725 AUD
Retailer 14$4,460 AUD
NZ Jewellers$5,157 AUD

30 data points across 18 retailers

27 retailers$1,767 AUD to $5,157 AUD

A
Cheapest Retailer
-
$1,767 AUD
$1,243 USD
Final sale: no returns
A
Retailer 2
-
$1,775 AUD
$1,248 USD
View
A
Retailer 3
-
$1,784 AUD
$1,255 USD
View
A
Retailer 4
-
$1,915 AUD
$1,347 USD
View
A
Retailer 5
-
$1,915 AUD
$1,347 USD
View
B+
Retailer 6
-
$2,003 AUD
$1,409 USD
View
B+
Retailer 7
-
$2,006 AUD
$1,411 USD
View
B+
Retailer 8
-
$2,036 AUD
$1,432 USD
View
B+
Retailer 9
-
$2,062 AUD
$1,450 USD
View
B+
Retailer 10
-
$2,069 AUD
$1,455 USD
View
B+
Retailer 11
-
$2,204 AUD
$1,550 USD
View
B+
Retailer 12
-
$2,204 AUD
$1,550 USD
View
B+
Retailer 13
-
$2,211 AUD
$1,555 USD
View
B+
Retailer 14
-
$2,211 AUD
$1,555 USD
View
Price last confirmed 8 days ago
B+
Retailer 15
-
$2,275 AUD
$1,600 USD
View
B+
Retailer 16
-
$2,318 AUD
$1,630 USD
View
B+
Retailer 17
-
$2,338 AUD
£1,295 GBP
View
B+
Retailer 18
-
$2,528 AUD
£1,400 GBP
View
B
Retailer 19
-
$2,626 AUD
$1,847 USD
View
B+
Retailer 20
-
$2,682 AUD
£1,485 GBP
View
B+
Retailer 21
-
$2,759 AUD
View
Price last confirmed 23 days ago
B+
Retailer 22
-
$2,928 AUD
€1,961 EUR
View
B
Retailer 23
-
$3,120 AUD
ZAR 35,449 ZAR
View
B
Retailer 24
-
$3,725 AUD
£2,063 GBP
View
B
Retailer 25
-
$4,460 AUD
£2,470 GBP
View
B
Retailer 26
-
$5,157 AUD
$3,627 USD
View
Most Expensive
B
NZ Jewellers
79ec246e-9ab2-4b6a-9b13-5dd2c3e82748 · Oct 20
$5,157 AUD
$3,627 USD
View
Price last confirmed 9 days ago
26 more retailers have this diamond
Prices start from $1,767 AUDSave up to $3,390 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 Round
$1,767 AUD